So it has been about 3 wheels since the brakes last stuck and I have had the car back over 2 weeks and put maybe 200 miles on the car since then. I went to wash the car and the rotors aligned in a way that I saw this on the back right rotor. How can I be the only one getting this? And what was Volvo thinking with this brake design?

 

So it has been about 3 wheels since the brakes last stuck and I have had the car back over 2 weeks and put maybe 200 miles on the car since then. I went to wash the car and the rotors aligned in a way that I saw this on the back right rotor. How can I be the only one getting this? And what was Volvo thinking with this brake design?


View attachment 1481

What I’m seeing in that pic looks fairly normal TBH...I mean rotors will get a light coating of rust on them as they have no way to protect them (it is a friction/wear surface). That mark is where the car was parked with the brake pad against the rotor. Yeah, not good if the pad material is getting stuck to the rotors as you previously had, but I don’t think anything in this specific pic is a cause for concern (unless I’m missing something). TBH I haven’t washed ours yet (only had for 3 weeks...but it’s due for a wash). I’ll be watching what happens!

 

Rust yes, but I have never had marks on rotors from the brakes.

 

Wife drove the car for 5 hours in torrential rain. It will of sat for a day before I drive it.

Any bets on rust or no rust when I try it tonight.
Ack this feels like tempting fate!!!

 

After 5 hours in driving rain and then a day sitting in the garage. No grinding or even the brushing sound of light contact. A light dusting of rust but that is no matter.

 

I still don’t understand how your brakes are that clean. Mine always have traces of rust on them.

 

There are traces of rust this time as I have not cleaned the car for a bit (not my choice).

After a wash they are perfect. Have not done any real breaking either and neither did spouse2.

Was surprised there was not even light grinding (brush sound) today.

 

SeattleCat I have markings like you on the rear break rotors. Mine looks very much like yours on the clean side. It`s been raining for the last 4 days.

 

To be clear I think my rotors look next to perfect. Was not complaining

Sounds like you are break problem free as well. When do you get snow down there? Cannot wait to play in the snow in the car

 

Snow is month away. Meanwhile getting ready.

 

I did post a link somewhere on this forum with the NHTSA complaint form to mention potential safety defects. I fully agree and if there is grinding there is no way to know how impacted the brakes are. I am waiting to have the grinding again, I just have to wet the care, park it 3-4 days and it will likely dislodge pad material just like it did for @imdunne8
When it does that I will bring my pads to the dealer so he can put new rotors on with my new pads. I suspect that will be the end of it then. People need to complain and take the car to the dealer when they experience this. Sooner or later Volvo will issue new formula pads. If the IHU bugs settle down I will be happy keeping the car and use my own pads. If I do get the C40 I will have them put my pads on day 1 to avoid all this BS.

 

Driving car after a day of it sitting in the rain (and some sideways rain). A little light grind at slow speed.

I did one 35 P brake to clean them (roads were so slick this deployed the abs). After that back to zero sounds.

 

Driving car after a day of it sitting in the rain (and some sideways rain). A little light grind at slow speed.

I did one 35 P brake to clean them (roads were so slick this deployed the abs). After that back to zero sounds.

Heck no I would be taking it to the dealer as that is crazy to have to keep doing that.

 

Was only a little grind that went away and was back to perfect. Not sticking like your did !!!

 

This happened to my wife for this first time this morning on her car with about 8000 miles on it. Sat for a couple of days after a lot of rain. Noise went away after a couple of firm brakes. Also, this happens every once in a while with my Tesla too. Don’t plan on escaping the issue by changing to another EV brand, especially one that automatically engages the parking brake, like both Volvo and Tesla do.

 

Guess what.....

Bad sticking today and grinding and bad grinding while drive and worse when braking. Going to arrange to bring car in and have them put my pads on with new rotors and hopefully that is it.

 

Did you wash it or was it from the rain?

 

Good luck.

 

Biggest issue is i they tell me I am on my own do I do it or just file for them to buy it back. At any other time I would have them buy it back, but car choices suck right now. And I hate the thought of going back to ICE. I took my wife's T5 to work today and what a miserable experience compared to the P8. There is a Gray on Red GV70 Sport near me I am going to look at this weekend, but not really enthusiastic about it.

 

Once you go ev it is really hard to go back

If it were me I would swap for another P8 but we have had very different experiences in the last 5 months

 

I've joined the club. Washed the car Saturday and this morning, wup, wup, wup...

 

I did a quick wash as with all the rain last week there were leaves and debris all over the lower part of car and in wheel wells. Ironically I did not wash wheels or tires, just hosed the wheel wells. I washed it Saturday 2pm and on Monday 5:30am it was seized up bad enough to damage the pads and cause serious grinding again. As much as I want to swap the car, I could get one that has more than just brake issues.

 

The other day I went to the dealership and had a little chat. I asked them specifically about the breaks problems and they told me they had only one XC40 recharge with break problems. The owner was honest to say that he washed the car day before and let it sit. Anyway, they suggested once i washed the car at home to go for a quick drive to dry the rotors. Defensively something to be careful about.

 

And Volvo suggested that to me to drive it as well and I said where does it say that in owners manual? Also when it is raining and I come home and park the car how do I prevent it from happening. Volvo is in denial right now. They have an issue and they need to fix it. Simple ceramic pads would resolve this. I should know soon enough.

 

Here you go, watch how the hood dips badly just before the clunk to show how seized up the brakes were. If you listen toward the end of the video you can hear the grinding especially as I brake.

Brakes Clunk 20211101-1.m4v

drive.google.com

 

Ugh... That is terrible.
All I can say at that point is - "Keep driving."
Volvo seems to not have solution yet otherwise they will quietly fix your problem. Ceramic pads are defensively the answer and I would prefer to have Acebono all around.
Can you please look at your break pads and read the part number. Should be visible toghether with the made in country. Mine says Italy and Part# 32287440. I wander if there is a difference.

 

Here is a better view, and watch as the rear lifts up from the front motor trying to propel the car. Less than 48 hours and they seized up this bad.

Brakes Clunk Rear 20211101.m4v

drive.google.com

I drop car in the AM. Gave Volvo 3 choices

• Keep replacing pads and rotors every time (I am not a fan of this)
• Support my ceramic pads to prove this fixes the issue until they can release and updated pad
• buy the car back (at which point I cancel my C40 order as well as the XC40 P8 order I placed today for one at the port) and I move on to probably the Audi Q4.

I would hate to go back to gas, but if I have to I have to. Trying to see a GV70 this weekend, they have a gray/red inbound that looks appealing.

I wish Akebono made pads for this, but they do not. The work order shows the pads they installed are 32287446 which is the "Pad Kit".

 

At that point there is nothing else to be done. Strange....very strange...

 

Same thing happened to me -- once, about 1,000 miles ago. I can relate -- no fun. I've since had a few instances of rain and sitting a day or so, but no reoccurrence. Just a little stickiness at first go, but no wupping.

 

For science I wish you would get a P8! Just so we can see if it sticks.

Mmm would they be willing to let you have the demo for a week. Point out how little you drive in miles. Then you could wash it (I know it’s not your baby but for science) see it the loaner gets seized up. If it does …

That would be great info. If not it would hint your P8 is just as I think cursed

Good luck which ever path you choose

 

Dealers here have no cars on the lots and the P8 is very rare.

 

Hypothetical discussion

Just had a thought, and wondering if anyone has considered this. I was talking to my wife about this issue and letting her know that one of the quirks of owning an EV (with electrically actuated parking brakes) is the need to drive it round and dry them off after washing. I was mansplaining her that unlike the XC90 you can't leave it in park (transmission park) with the parking break unused as there is no conventional transmission. It is not accommodated by Volvo, no doubt for safety reasons. Then it dawned on me that there is a scenario when you need the parking break to not be on and the car to able to move.......Towing!!!

DON'T TRY THIS!! - Discussion starter only

I looked up the owners manual and noted that:- "Tow mode is used when the vehicle needs to be able to roll freely, for example, to pull it up onto the bed of a tow truck." which deactivates the parking brake.

Once the pads and rotors are dry.
"Deactivating Tow mode

• Make sure the vehicle is stationary.

• Apply the parking brake.

• Tow mode is now deactivated."

Obviously this comes with very significant potential safety issue as 4700lbs of vehicle rolling on its own will cause significant damage and even possibly fatalities, but if the wheels were securely chocked for a couple of hours....

Anyone crazy enough to think of this idea?

 

Hypothetical discussion

Just had a thought, and wondering if anyone has considered this. I was talking to my wife about this issue and letting her know that one of the quirks of owning an EV (with electrically actuated parking brakes) is the need to drive it round and dry them off after washing. I was mansplaining her that unlike the XC90 you can't leave it in park (transmission park) with the parking break unused as there is no conventional transmission. It is not accommodated by Volvo, no doubt for safety reasons. Then it dawned on me that there is a scenario when you need the parking break to not be on and the car to able to move.......Towing!!!

DON'T TRY THIS!! - Discussion starter only

I looked up the owners manual and noted that:- "Tow mode is used when the vehicle needs to be able to roll freely, for example, to pull it up onto the bed of a tow truck." which deactivates the parking brake.

Once the pads and rotors are dry.
"Deactivating Tow mode

• Make sure the vehicle is stationary.

• Apply the parking brake.

• Tow mode is now deactivated."

Obviously this comes with very significant potential safety issue as 4700lbs of vehicle rolling on its own will cause significant damage and even possibly fatalities, but if the wheels were securely chocked for a couple of hours....

Anyone crazy enough to think of this idea?

Guess I'm crazy 'cause I tried it a couple months ago and it doesn't work, unless you want to leave the car running and drawing down the battery. The vehicle stays running while in tow mode, but I don't know if it times out after a set time or not. I tried it for about 10-15 minutes. Anyone try it for more than that?