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I am so disappointed with even the upgraded stereo system in my XC 40 inscription. The $800 extra should have resulted in better sound quality. Does any one have suggestions for a reasonable way to improve this in the US?
 

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Hey Wendy,
You can swipe all the way to the right and adjust the sound experience settings. Then under settings, you can also play around with the equalizer.
Hope that helps.
 

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Adding a real subwoofer and better aftermarket speakers is really about all you can do. It is not a totally awful sounding system, but I certainly feel like I didn't get my money's worth for this multimedia package upgrade. The 600-watt 13 speaker Harmon Kardon audio system sounds impressive on paper, but in real life, the Air Woofer technology is pitiful. About the only musical genre where it sounds quite good is Bluegrass, Jazz, Opera and Classical music. It sounds like crap with Rap, EDM, House, Club, Rock, Pop, Grunge, Heavy Metal, Country, K-Pop, Lo-fi, Dancehall, Reggae, Dub, Ambient, R&B, Grime, New Wave, Ska, Classic Rock, Speed Metal, Trance and Folk.

I don't have an Inscription. I have a fully loaded 2020 Momentum XC40. However, I agree with you that the stereo is nothing to write home about. I have a 14 year old vehicle that has a sound system that utterly destroys this one. I prefer everything about my new Volvo, but the 14-year old SUV wins the competition with audio. :)

I may add some Polk Audio component speakers to my Volvo, a JL Audio subwoofer and see if there is a way to upgrade the amplifier. I think the XC40 audio system is a fiber optic system called MOST (Media Oriented System Transport) and all data is transmitted by light via fiber optics. This results in sound free from electrical interference. That is a good thing since you don't get the whine you sometimes get in other audio systems in cars that pick up interference from the alternator and other electrical components in the car. However, it is a bad thing, because a lot of stereo installation shops have no idea how to work with this set-up and will mess your car up pretty bad. You are better off with a true specialty shop in that case vice your local Best Buy store's car audio installation.

I take it you don't want to replace the head unit with an aftermarket unit which is a good thing because that would be really hard, and you may lose other things (functionality) you already paid for. Things like the factory navigation system, I hear, will cease to function since it is on the MOST system loop. All the multimedia units are in a series string on the fiber loop like those old style Christmas tree lights your parents and grandparents had where when one bulb burns out, it turns them all off and the head unit is the source unit for that control.
 

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Discussion Starter · #4 ·
Adding a real subwoofer and better aftermarket speakers is really about all you can do. It is not a totally awful sounding system, but I certainly feel like I didn't get my money's worth for this multimedia package upgrade. The 600-watt 13 speaker Harmon Kardon audio system sounds impressive on paper, but in real life, the Air Woofer technology is pitiful. About the only musical genre where it sounds quite good is Bluegrass, Jazz, Opera and Classical music. It sounds like crap with Rap, EDM, House, Club, Rock, Pop, Grunge, Heavy Metal, Country, K-Pop, Lo-fi, Dancehall, Reggae, Dub, Ambient, R&B, Grime, New Wave, Ska, Classic Rock, Speed Metal, Trance and Folk.

I don't have an Inscription. I have a fully loaded 2020 Momentum XC40. However, I agree with you that the stereo is nothing to write home about. I have a 14 year old vehicle that has a sound system that utterly destroys this one. I prefer everything about my new Volvo, but the 14-year old SUV wins the competition with audio. :)

I may add some Polk Audio component speakers to my Volvo, a JL Audio subwoofer and see if there is a way to upgrade the amplifier. I think the XC40 audio system is a fiber optic system called MOST (Media Oriented System Transport) and all data is transmitted by light via fiber optics. This results in sound free from electrical interference. That is a good thing since you don't get the whine you sometimes get in other audio systems in cars that pick up interference from the alternator and other electrical components in the car. However, it is a bad thing, because a lot of stereo installation shops have no idea how to work with this set-up and will mess your car up pretty bad. You are better off with a true specialty shop in that case vice your local Best Buy store's car audio installation.

I take it you don't want to replace the head unit with an aftermarket unit which is a good thing because that would be really hard, and you may lose other things (functionality) you already paid for. Things like the factory navigation system, I hear, will cease to function since it is on the MOST system loop. All the multimedia units are in a series string on the fiber loop like those old style Christmas tree lights your parents and grandparents had where when one bulb burns out, it turns them all off and the head unit is the source unit for that control.
Thanks for the detailed and really helpful response!
 

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I’m about to buy a 2021 XC40. I listened to the HK sound system, and wasn’t so impressed. I currently have a 2006 Volvo S40 with the premium sound system (either Dynaudio or Audyssey) and I honestly prefer that to the HK. Not as much booming bass, but more clarity and depth, especially with vocals.

So I’d like to improve the XC40 audio. Should I upgrade from the standard system with aftermarket speakers/sub, or spend $800 for the HK, and upgrade from there? I was reading in a forum that even with the standard system, there are cutouts where the extra HK speakers would be, so aftermarket speakers could be added there. Not sure if that’s true.

A reputable car audio guy in my area said he hasn’t worked on an XC40, but he’s confident he would replace 4 interior speakers with Alpine 2-ways, add a 10” sub, and extra sound deadening material. But he’s never worked on an XC40, and probably few people have, so I’m a bit nervous to mess with aftermarket speakers/amps. Is it reasonable to assume the XC40 would benefit from additional sound deadening?

Any advice would be appreciated!
 

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DavidE,

The XC40 is actually a quiet car. I am impressed with the lack of road and wind noise I have compared to other cars I have driven or ridden in. Even with the full panaramic moonroof, I am not getting much noise at all. Now, I don't even yet have 2,000 miles on it. So, that might all change as time goes on, but it is a quiet vehicle. If what you are asking is should you buy something like Kilmat or Dynamite sound deadening material to insulate, then the answer is maybe. Depends on what kind of music you listen to. Th door speakers might rattle a bit at high volume and/or with a lot of bass in the music. I'd certainly consider adding something to the outer-skin, or the inner-sheet metal on the door and/or door panel. The $800 you quote sounds great since I paid for the Multimedia Package at a cost of $1,776.00.
That only included the Sensus Navigation Pro system and the 600-watt Harman Kardon Premium audio system with 13 speakers and the Air Woofer technology.

So, if I had it to do all over again, and was going to end up "upgrading" anyway, then I'd just save the money ($800 in your case) and buy an aftermarket upgrade and bypass paying for a premium sound system that doesn't really sound very premium. If all you are doing is listening to NPR, AM weather forecasts, sports talk radio, classical music, a cappella Baroque or Gregorian chants, then the Volvo XC40 sound is fine. :) Otherwise, definitely get better speakers. Alpines are good. Which 2-way model(s) are you looking at getting? The 10" subwoofer will definitely make a difference in the XC40 (as the Air Woofer is a cruel joke), the only question is where are you going to put it? The XC40 trunk is not mammoth.
501


502


Throw in a 10" sub (don't even think about a 15" one back there) and you have even less space unless you are doing some sort of custom box that becomes the floor of the trunk (pricey but doable) or you are looking at something like a Bazooka tube mounted on the side. Bazooka build quality has gone downhill though. Better to build a custom box than to pay $300 or more for their 10" bass tube that is made poorly. Putting something like a permanent subwoofer back there means you may well lose the fold-up floor and wall divider and thing you can hand grocery bags on, etc. Also think about folding the rear seats down and what that might do to your sub idea for pass-through stuff. Maybe you can do something under the seats or on the rear passenger seat floor.

It will sound better. Can't really make it sound worse. The question then becomes return on your investment. Will it sound like the money you put into the aftermarket upgrades?
 

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DavidE,

The XC40 is actually a quiet car. I am impressed with the lack of road and wind noise I have compared to other cars I have driven or ridden in. Even with the full panaramic moonroof, I am not getting much noise at all. Now, I don't even yet have 2,000 miles on it. So, that might all change as time goes on, but it is a quiet vehicle. If what you are asking is should you buy something like Kilmat or Dynamite sound deadening material to insulate, then the answer is maybe. Depends on what kind of music you listen to. Th door speakers might rattle a bit at high volume and/or with a lot of bass in the music. I'd certainly consider adding something to the outer-skin, or the inner-sheet metal on the door and/or door panel. The $800 you quote sounds great since I paid for the Multimedia Package at a cost of $1,776.00.
That only included the Sensus Navigation Pro system and the 600-watt Harman Kardon Premium audio system with 13 speakers and the Air Woofer technology.

So, if I had it to do all over again, and was going to end up "upgrading" anyway, then I'd just save the money ($800 in your case) and buy an aftermarket upgrade and bypass paying for a premium sound system that doesn't really sound very premium. If all you are doing is listening to NPR, AM weather forecasts, sports talk radio, classical music, a cappella Baroque or Gregorian chants, then the Volvo XC40 sound is fine. :) Otherwise, definitely get better speakers. Alpines are good. Which 2-way model(s) are you looking at getting? The 10" subwoofer will definitely make a difference in the XC40 (as the Air Woofer is a cruel joke), the only question is where are you going to put it? The XC40 trunk is not mammoth.
View attachment 501

View attachment 502

Throw in a 10" sub (don't even think about a 15" one back there) and you have even less space unless you are doing some sort of custom box that becomes the floor of the trunk (pricey but doable) or you are looking at something like a Bazooka tube mounted on the side. Bazooka build quality has gone downhill though. Better to build a custom box than to pay $300 or more for their 10" bass tube that is made poorly. Putting something like a permanent subwoofer back there means you may well lose the fold-up floor and wall divider and thing you can hand grocery bags on, etc. Also think about folding the rear seats down and what that might do to your sub idea for pass-through stuff. Maybe you can do something under the seats or on the rear passenger seat floor.

It will sound better. Can't really make it sound worse. The question then becomes return on your investment. Will it sound like the money you put into the aftermarket upgrades?
Thank you so much for your detailed response! It's good to know that your Inscription is quiet. The R-Design might be a bit louder, but probably not by much.

In 2021, the HK system is offered as an $800 option for all trim levels. I don't think it's part of any package, which is fine, since I don't care about the Navigation Pro. My biggest concern, as you mentioned, is placement of a sub and other speakers. I listen to everything from choral music to hip hop, so a sub is important to me.

So either I get the standard system and hope that a car audio pro will be able to figure out how to add aftermarket speakers/sub, or spend the $800 for the HK and call it a day. I need to speak to the car audio guy again and ask where he was thinking about placing a sub, and which Alpine speakers he's recommending. I don't even know if he's ever seen an XC40, so I wanna make sure before he starts ripping the car apart and charges $2000. Even installation of the door speakers seems tricky. Before I decide, I'm gonna call a couple of car audio shops in my area. Thanks again for the advice.
 

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DavidE,

Yes, in your case a subwoofer is VERY important. I don't know what is there (speaker-wise) on the XC40s that don't have the upgraded system. So, I would almost say you are forced to pay the $800 upgrade if for no other reason than to have the speaker placement already in place. No matter how you look at it, you are going to spend a pretty penny to make the system sound awesome. So, you can trust that your local car audio shop (again a true car audio custom specialist and not the guys at Best Buy) can modify your Volvo without destroying it. None of this stuff will be covered under warranty. Trashing your interior with sloppily cut holes to put in speakers, will really bum you out. So, if you pay the $800 for the thirteen speakers, and then replace some or all of them and add a second subwoofer in the back (either under the trunk or with a false floor bottom in the back seats), it might be good enough. It really depends on the 600-watt sub and what it can drive. It was paired with what came with the car but it may not be able to drive better speakers. It definitely won't blow better speakers, but may leave you underwhelmed.

My vote would be for you to get the $800 upgraded HK system. Then tweak the **** out of it to see if you can get it to sound acceptable. If you can accept it. You are done. If it really does still suck, then make small incremental adjustments. First replace the front door speakers and the ones in the dash. See how that sounds. If it is good then stop. If it still sucks, then move onto better speakers in the rear. Still sucks, then add a subwoofer. Still sucks, then you will still be able to keep the upgraded aftermarket speakers you installed, but now will need a better amp. Make sure everything you are looking at is continuous and not just peak. Don't just use the maximum (pr peak) power rating when matching your amp and your speakers. Knowing the impedance that you amp can push is a good thing to know when you look to buy your speakers and subwoofers. Choosing the wrong impedance can lead to your overworking your amp and lead to your amp burning out. And everyone knows about blown speakers. Pay attention to how many ohms too. You won't want 2ohm speakers if the Volvo amp is 4ohms. I don't know what the Volvo amp is unfortunately. Just make sure that they both match.
 

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DavidE,

Yes, in your case a subwoofer is VERY important. I don't know what is there (speaker-wise) on the XC40s that don't have the upgraded system. So, I would almost say you are forced to pay the $800 upgrade if for no other reason than to have the speaker placement already in place. No matter how you look at it, you are going to spend a pretty penny to make the system sound awesome. So, you can trust that your local car audio shop (again a true car audio custom specialist and not the guys at Best Buy) can modify your Volvo without destroying it. None of this stuff will be covered under warranty. Trashing your interior with sloppily cut holes to put in speakers, will really bum you out. So, if you pay the $800 for the thirteen speakers, and then replace some or all of them and add a second subwoofer in the back (either under the trunk or with a false floor bottom in the back seats), it might be good enough. It really depends on the 600-watt sub and what it can drive. It was paired with what came with the car but it may not be able to drive better speakers. It definitely won't blow better speakers, but may leave you underwhelmed.

My vote would be for you to get the $800 upgraded HK system. Then tweak the **** out of it to see if you can get it to sound acceptable. If you can accept it. You are done. If it really does still suck, then make small incremental adjustments. First replace the front door speakers and the ones in the dash. See how that sounds. If it is good then stop. If it still sucks, then move onto better speakers in the rear. Still sucks, then add a subwoofer. Still sucks, then you will still be able to keep the upgraded aftermarket speakers you installed, but now will need a better amp. Make sure everything you are looking at is continuous and not just peak. Don't just use the maximum (pr peak) power rating when matching your amp and your speakers. Knowing the impedance that you amp can push is a good thing to know when you look to buy your speakers and subwoofers. Choosing the wrong impedance can lead to your overworking your amp and lead to your amp burning out. And everyone knows about blown speakers. Pay attention to how many ohms too. You won't want 2ohm speakers if the Volvo amp is 4ohms. I don't know what the Volvo amp is unfortunately. Just make sure that they both match.
That makes a lot of sense. So I guess I'll get the HK system, and see if I still wanna change some of the speakers. The 200mm subwoofer with the HK system is over rear wheel arch.

I believe the standard system sub is 330 watts, and the HK is 660 watts.

I found this diagram if you'd like to look: Harman Kardon Automotive Volvo

And here's the subwoofer for sale directly from Volvo (item 10, I think): Volvo XC40 Woofer | Volvo OEM Part Number 31438479

I'll get the $800 upgrade, but I might need a paper route to afford it!
 

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DavidE,

Don't forget that there are two (2) woofers in the upgraded system. One in the front of the XC40 is an Air Woofer and one in the rear is an Air subwoofer.. Both are 200mm.

Audio System Overview.jpeg



The Air Woofer is using a kind of bass port and uses the whole cabin as the subwoofer enclosure.

Here are some others not happy with the sound in their XC40 (you can click to read the thread):

https://www.reddit.com/r/Volvo/comments/bejqj3
If you left the rear like this:

20190214_161711.jpg


and instead of tools put a custom subwoofer there, you would improve your bass a lot.

20190214_161729.jpg


Try and make something custom like this that fits in flush with the floor of the trunk:

35897572696_b4cd112974_k-1.jpg
35768257032_0c77f0ac80_k.jpg
 

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I have the Harmon Kardon system and wasn't thrilled with it. I listen to a lot of jazz and don't play it loud, and stream most of the music from from Pandora using android auto. The fidelity streamed music is much better then broadcast radio or Sirius.

Initially I found the highs to be soft and muted(I like crisp well defined highs), and the bass to loose and occasionally distorted(I like tight well balanced base). My XC40 is a few months old with 4k miles on the odo, when I'm in the car the music is playing.... always. A 2-3 weeks ago I notice the sound quality had improved and it continues to do so. I know all new speaker need a break in period for the speaker cones to loosen up and become properly positioned in the frames. I did not expect the break in period to be this long or the improvement to be as dramatic. I had been speaker shopping at two local top notch audio shop earlier this week. After listening to streaming music both told me new speaker would not make much of a difference and to save my money.... or go with a very expensive revamp of the entire system. Even though I was spoiled by the Bowers Wilkens system in my former Volvo, I'll live with the Harmon Kardon system, it's not that bad now.

I suggest new owners with the H-K system spend a few thousand miles listening before they spend their $$$.

Paul
 

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Paul,

You raise a very good point. I will keep my ears tuned to this possibility. My XC40 is approaching 2K miles. Like you, I am playing music every single time I am in the vehicle. I really need to see the speakers. If they are cheap paper and cardboard speakers then I do not expect them to improve but to degrade. Each week that goes by, I feel I am just subtly convincing myself that it sounds okay, or even better, but I don't believe it really is. I know that it isn't when I get in why other vehicle that is 14+ years old and still floors me when I turn that stereo system on. My wife also says the same thing. Sitting in the other car is like being in a nightclub or at a concert. Sitting in the Volvo is nice, but not as nice. I can certainly live with it. It is not a dealbreaker and I am not ready to trade it in already for another car. It just seems like it could be better but isn't so bad as to have me contemplating suicide. :) For those disappointed in the bass, be sure to check that the subwoofer is turned on. In one case with my XC40, the subwoofer which had been on, was actually off and it made the sound obviously lack any punch. With both back on there was more thump to be felt. It isn't good for my ears, but some might enjoy the surround sound effect too. Give that a try and see how you feel about that.


I have the Harmon Kardon system and wasn't thrilled with it. I listen to a lot of jazz and don't play it loud, and stream most of the music from from Pandora using android auto. The fidelity streamed music is much better then broadcast radio or Sirius.

Initially I found the highs to be soft and muted(I like crisp well defined highs), and the bass to loose and occasionally distorted(I like tight well balanced base). My XC40 is a few months old with 4k miles on the odo, when I'm in the car the music is playing.... always. A 2-3 weeks ago I notice the sound quality had improved and it continues to do so. I know all new speaker need a break in period for the speaker cones to loosen up and become properly positioned in the frames. I did not expect the break in period to be this long or the improvement to be as dramatic. I had been speaker shopping at two local top notch audio shop earlier this week. After listening to streaming music both told me new speaker would not make much of a difference and to save my money.... or go with a very expensive revamp of the entire system. Even though I was spoiled by the Bowers Wilkens system in my former Volvo, I'll live with the Harmon Kardon system, it's not that bad now.

I suggest new owners with the H-K system spend a few thousand miles listening before they spend their $$$.

Paul
 

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Paul,

You raise a very good point. I will keep my ears tuned to this possibility. My XC40 is approaching 2K miles. Like you, I am playing music every single time I am in the vehicle. I really need to see the speakers. If they are cheap paper and cardboard speakers then I do not expect them to improve but to degrade. Each week that goes by, I feel I am just subtly convincing myself that it sounds okay, or even better, but I don't believe it really is. I know that it isn't when I get in why other vehicle that is 14+ years old and still floors me when I turn that stereo system on. My wife also says the same thing. Sitting in the other car is like being in a nightclub or at a concert. Sitting in the Volvo is nice, but not as nice. I can certainly live with it. It is not a dealbreaker and I am not ready to trade it in already for another car. It just seems like it could be better but isn't so bad as to have me contemplating suicide. :) For those disappointed in the bass, be sure to check that the subwoofer is turned on. In one case with my XC40, the subwoofer which had been on, was actually off and it made the sound obviously lack any punch. With both back on there was more thump to be felt. It isn't good for my ears, but some might enjoy the surround sound effect too. Give that a try and see how you feel about that.
Are you streaming music? Do you have the H-K system? In my CX40, with the H-K system, the difference between broad cast sound fidelity and streaming sound fidelity' is huge, very noticeable even to my old ears... :rolleyes:

How do we check to see if the sub wolfer is turned on?
The H-K system has an equalizer. My ears like the sound best with a minor boost at the highs end and flat through the other frequencies.

Paul
 

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Paul,

I do it all. Play music using Apple CarPlay and my iPhone. Apple Music, Spotify built-in with the XC40 system and streaming via Bluetooth from my iPhone, YouTube streaming, my own MP3s from my Apple Music library, local HD FM Radio, Sirius XM satellite radio, if there was a CD player, I'd be playing CDs too. :) Yes, I have the H-K premium audio system. It is supposed to be a multi-channel digital amp with up to 650 watts of output power. I think it only has 13 speakers and an amp, but I keep seeing references to there being 14 speakers. I can only account for 13 of them though. Maybe that 14 is in the Inscription or R-Design. I have the Momentum. I know the Bowers and Wilkens system has 19 speakers, a 12-channel amp with 1,400 watts of output power. No wonder everyone says that blows the H-K out of the water. LOL!!

When you open the Sound Experience window the section marked Subwoofer will have a slider that shows it to be either on or off. This is along with the Surround Sound settings too. I am not in my car right now, but will try to remember to look at it when I go out today. It is all in the same audio settings area along with having all the sound Driver focused or to the rear or in the center for it being balanced for all in the car. Right there with the EQ.


Are you streaming music? Do you have the H-K system? In my CX40, with the H-K system, the difference between broad cast sound fidelity and streaming sound fidelity' is huge, very noticeable even to my old ears... :rolleyes:

How do we check to see if the sub wolfer is turned on?
The H-K system has an equalizer. My ears like the sound best with a minor boost at the highs end and flat through the other frequencies.

Paul
 

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DavidE,

Don't forget that there are two (2) woofers in the upgraded system. One in the front of the XC40 is an Air Woofer and one in the rear is an Air subwoofer.. Both are 200mm.

View attachment 506


The Air Woofer is using a kind of bass port and uses the whole cabin as the subwoofer enclosure.

Here are some others not happy with the sound in their XC40 (you can click to read the thread):

https://www.reddit.com/r/Volvo/comments/bejqj3
If you left the rear like this:

View attachment 508

and instead of tools put a custom subwoofer there, you would improve your bass a lot.

View attachment 509

Try and make something custom like this that fits in flush with the floor of the trunk:

View attachment 510 View attachment 511
what size sub is that? and what amp did you fit with it?
 

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Hey Wendy,
You can swipe all the way to the right and adjust the sound experience settings. Then under settings, you can also play around with the equalizer.
Hope that helps.
What you have to be very careful about when replacing oem equipment is the voiding of your warranty. Head unit replacement or wiring upgrades will definitely void all warranties. I did that on a Nissan Maxima I recently had and found out the hard way.
 

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Gumby,

Looks to be a 10" sub, but this isn't my XC40 in the photo. I was just showing that as an example for someone to get an idea if they wanted to modify for themselves. For me, it appears Sir above may have been onto something, because now with over 4,000 miles on my XC40 and a lot more listening, my factory stereo and air woofer are sounding a LOT better. Breaking in the speaker? No idea. Just getting used to it since it is now my main driver? Perhaps.

what size sub is that? and what amp did you fit with it?
 

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Rdesignblack,

What you say here isn't necessarily wrong. It just isn't always true either. :) It will vary from state to state, country to country and dealership to dealership. Using improper fluids can void your warranty (depending on which part we are talking about). Putting 10W30 motor oil in your windshield washer fluid reservoir will surely void the warranty on the windshield washer pump/motor. However, it won't void the warranty on your tires or the seatbelts, or the exhaust.

Adding an aftermarket stereo head unit to your Volvo XC40 isn't going to void your sunroof warranty, your transmission, your brakes, your rear hatch, etc. Bottom line, if your vehicle is damaged as a result of a repair or service done by you or your mechanic, the manufacturer/dealer has the right to deny the warranty claim. They must, however, be able to prove that the third-party work—not a vehicle defect—caused the damage to the vehicle. Even if this happens, it does not void the warranty for the rest of your car. If your buddy down the street installs a stereo and it sparks and causes a short-circuit that fries a motherboard, you are going to be out of luck. That was your fault and the parts fried will be yours to pay for out of your own pocket.

If you bought an XC40 and had someone install a remote starter because you didn't want to pay for Volvo On Call, and a few days later, the car won’t start, and you have it towed to the dealership. The dealership finds out that the person who worked on your XC40 broke some switch, preventing the vehicle from starting, then the new car warranty will not cover the diagnosis and repair of this problem. Conversely, let’s say you install a subwoofer and amplifier in your car. If your wiper motor or sunroof stop working a month later, the dealership cannot blame the audio equipment for the fault. They might blame you and deny to pay for the repairs if it is determined that the sub and amp lead to your battery prematurely dying. To deny warranty coverage, the onus is on them to prove that any modifications to the vehicle are directly responsible for the problem. New snow tires won’t void your electrical system warranty. Neither will a nice set of racing stripes.

At least here in the United States, a law called the Magnussen Moss Warranty Act protects vehicle owners from being penalized for using third-party products on their vehicle . An aftermarket oil filter, air filter or tires will not affect the warranty unless the manufacturer can prove that the aftermarket product is responsible for the issue. An aftermarket stereo, dash cam, etc are all fine.

This is all a moot point once the warranty expires. Of course this also only applies to folks who purchased their car and are not leasing it (unless they know they will buy the car after the lease is up).

What you have to be very careful about when replacing oem equipment is the voiding of your warranty. Head unit replacement or wiring upgrades will definitely void all warranties. I did that on a Nissan Maxima I recently had and found out the hard way.
 

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Rdesignblack,

What you say here isn't necessarily wrong. It just isn't always true either. :) It will vary from state to state, country to country and dealership to dealership. Using improper fluids can void your warranty (depending on which part we are talking about). Putting 10W30 motor oil in your windshield washer fluid reservoir will surely void the warranty on the windshield washer pump/motor. However, it won't void the warranty on your tires or the seatbelts, or the exhaust.

Adding an aftermarket stereo head unit to your Volvo XC40 isn't going to void your sunroof warranty, your transmission, your brakes, your rear hatch, etc. Bottom line, if your vehicle is damaged as a result of a repair or service done by you or your mechanic, the manufacturer/dealer has the right to deny the warranty claim. They must, however, be able to prove that the third-party work—not a vehicle defect—caused the damage to the vehicle. Even if this happens, it does not void the warranty for the rest of your car. If your buddy down the street installs a stereo and it sparks and causes a short-circuit that fries a motherboard, you are going to be out of luck. That was your fault and the parts fried will be yours to pay for out of your own pocket.

If you bought an XC40 and had someone install a remote starter because you didn't want to pay for Volvo On Call, and a few days later, the car won’t start, and you have it towed to the dealership. The dealership finds out that the person who worked on your XC40 broke some switch, preventing the vehicle from starting, then the new car warranty will not cover the diagnosis and repair of this problem. Conversely, let’s say you install a subwoofer and amplifier in your car. If your wiper motor or sunroof stop working a month later, the dealership cannot blame the audio equipment for the fault. They might blame you and deny to pay for the repairs if it is determined that the sub and amp lead to your battery prematurely dying. To deny warranty coverage, the onus is on them to prove that any modifications to the vehicle are directly responsible for the problem. New snow tires won’t void your electrical system warranty. Neither will a nice set of racing stripes.

At least here in the United States, a law called the Magnussen Moss Warranty Act protects vehicle owners from being penalized for using third-party products on their vehicle . An aftermarket oil filter, air filter or tires will not affect the warranty unless the manufacturer can prove that the aftermarket product is responsible for the issue. An aftermarket stereo, dash cam, etc are all fine.

This is all a moot point once the warranty expires. Of course this also only applies to folks who purchased their car and are not leasing it (unless they know they will buy the car after the lease is up).
Great response but here is what happened to me. Had a 19 Nissan Maxima and upgraded all speakers to focal and added an amp as well. Began having problems with the Oem head unit. Ultimately it was discovered that the head unit was a Nissan issue but since I upgraded speakers and wiring they would not replace head unit. Fought it all the way through corporate using the magnussen warranty as my guide all to no prevail. I totally understand that a head unit upgrade wouldn’t void a tranny issue but it could be a play on words if push comes to shove.
 
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