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Discussion Starter #1
Hi everyone,


I was wondering about the engine start/stop system on the XC40. From what I've seen, there's no separate button to turn off the start/stop system, correct? So you have to go into the touch screen display to turn it off? And do you have to turn it off every time you restart the engine?


I have a Jeep with the start/stop system and I don't like the fact that I have to turn it off every time I start the engine. I wish it would "remember" my preference to keep it off, but at least there's a button on the dash that allows me to quickly turn it off without having to go through touchscreen menus.
 

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This is what I know so far;
-the Start/Stop function is supposed to deactivate in Dynamic drive mode
-if you deactivate it, it'll remain turned off until you reactivate it, cahnge drive mode to Eco or Comfort, or restart the engine

So I guess there's no way to turn it off permanently unless you drive in Dynamic forever.
 

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Discussion Starter #3
This is what I know so far;
-the Start/Stop function is supposed to deactivate in Dynamic drive mode
-if you deactivate it, it'll remain turned off until you reactivate it, cahnge drive mode to Eco or Comfort, or restart the engine

So I guess there's no way to turn it off permanently unless you drive in Dynamic forever.

Okay, so is there any way to set up the touch screen to have a "quick access" button for the start/stop system? I don't know if the UI is configurable to any extent, but if the start/stop system defaults to always being on (other than when in Dynamic mode), then it would be nice if there was a way to turn it off without running through submenus on the touchscreen. These new start/stop systems are a big pet peeve of mine....I really don't like them at all and I wish they would stay off when the driver turns them off, but so far I haven't seen any vehicles that are set up that way. For whatever reason, they always default to being on.
 

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Discussion Starter #4
So I just discovered that my Jeep's start/stop system can be completely disabled by simply unplugging a small, green connect that goes to the auxiliary battery. It's a voltage sensing wire that is used to enable or disable the start/stop system and from what I've heard, all new vehicles with start/stop systems have a similar set up. That said, it might be an easy way to disable start/stop on Volvo vehicles too. I'll have to do a bit more research when I eventually get my XC40.
 

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I'm a new owner , I take delivery tomorrow morning, while discussing the start stop issue, my salesman stated that its a Federal law that the car defaults to the start/stop mode so I doubt that there is a walk around available via a search through the options. I do like the idea of being able to disconnect it manually.
 

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Discussion Starter #6
I'm a new owner , I take delivery tomorrow morning, while discussing the start stop issue, my salesman stated that its a Federal law that the car defaults to the start/stop mode so I doubt that there is a walk around available via a search through the options. I do like the idea of being able to disconnect it manually.

It's definitely not a Federal law. Start/Stop systems aren't even mandated (at least not yet), but rather something that auto manufacturers are doing in order to help increase their CAFE numbers. So there's no law that says they need to offer it nor whether it defaults to "on" with every engine start. I can tell you that my Jeep Grand Cherokee has a V6 engine and has it, but the V8 engine Grand Cherokees don't have it at all, at least not yet. I guess the theory is that V8 guys care even less about fuel economy, so they didn't put it on the V8 version of the Grand Cherokee. I'm sure that day is coming though...
 

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Volvo plans to electrify their whole line up so there's a good chance, we wont be seeing this feature in future models. The start/stop tech has vastly improved since it was first implemented and I don't think you'll find it to be as noticeable/jarring as it was in older vehicles. Let us know what you think of it or if you find a workaround.
 

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Discussion Starter #8
Volvo plans to electrify their whole line up so there's a good chance, we wont be seeing this feature in future models. The start/stop tech has vastly improved since it was first implemented and I don't think you'll find it to be as noticeable/jarring as it was in older vehicles. Let us know what you think of it or if you find a workaround.

My Jeep is a 2017 model and I still find it very annoying. I don't find any real value in the type of driving that I normally encounter with the engine shutting down momentarily. I'd prefer to keep it running until I choose to turn it off. Especially on a turbocharged engine....
 

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I like the idea of a stop/start but it has to be well designed & implemented. I have a Ford Fusion Energi (plug in hybrid) and it is seamless. But its designed as a hybrid. I like the start/stop for the fuel/emmisions reductions but I would want an ICE to warm up before going on and off a lot, its cold starts that cause the most wear AFAIK. Is the Volvo system (or the Jeep)system designed to get the engine warm before the start/stop kicks in?
 

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Discussion Starter #10
I like the idea of a stop/start but it has to be well designed & implemented. I have a Ford Fusion Energi (plug in hybrid) and it is seamless. But its designed as a hybrid. I like the start/stop for the fuel/emmisions reductions but I would want an ICE to warm up before going on and off a lot, its cold starts that cause the most wear AFAIK. Is the Volvo system (or the Jeep)system designed to get the engine warm before the start/stop kicks in?

Yes, there are a whole list of conditions that must be met before start/stop turns on. One of them is that the engine must reach full operating temp.
 

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I have had my car for a couple months now and it’s not my favorite feature but I have gotten used to it. Sometimes I quickly swipe right and hit the start/stop button. It takes maybe a second to a second and a half. Not a big deal. I can also use a driver profile that makes the dynamic drive the default, hence the start/stop is disabled.
 

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Discussion Starter #12
I have had my car for a couple months now and it’s not my favorite feature but I have gotten used to it. Sometimes I quickly swipe right and hit the start/stop button. It takes maybe a second to a second and a half. Not a big deal. I can also use a driver profile that makes the dynamic drive the default, hence the start/stop is disabled.

From what I've read, it doesn't stay the default. I believe you have to set it to Dynamic every time you start the car. I really dislike these start/stop systems and I've heard that the Volvo system is particulary rough/unrefined compared to other vehicles, so I'd rather have the ability to shut it off and keep it off instead of having to turn it off every time I start the car. The start/stop on my Jeep isn't too bad, but I still don't like it and I often forget to turn it off. But then I discovered that I could easily pull a single wire to disable it all the time and now it's much nicer to drive since I no longer have to remember to shut it off every single time I start the engine.
 

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You can setup Individual Mode to deactivate start/stop. The downside is that you will need to punch the Drive Mode button 4 times in order to get to the Individual Mode as the car defaults to Comfort on start up which has start/stop enabled.

I have found no other "permanent" way as yet to disable the feature but once you get in the habit of using your Individual Mode, it becomes a second nature way of starting the car each time.

However, make sure you wait a few seconds before punching the Drive Mode button as you can easily get ahead of the system which can confuse it. I have done at least once or twice and the negative is that the "confusion" seems to completely reconfigure your Individual Mode, including re-enabling start/stop.

All-in-all, this start/stop feature can be an annoyance but once you get into whatever routine you decide on, the rest of the car's positive features quickly puts this into the background.
 

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Discussion Starter #15
It appears that you can deactivate start/stop. See page 408 in the manual.

Okay, so the question now is if you turn it off, does it really stay off when you restart the engine or do you have to turn it off every time? It's not clear when they say it will remain off until it is reactivated. What exactly does that mean? Reactivated by the driver hitting the button again? Or does it reactivate upon engine start-up like every other vehicle? And does the drive mode default to Eco when you start the engine? Or does the drive mode remain at the setting when the engine was last turned off?
 

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Okay, so the question now is if you turn it off, does it really stay off when you restart the engine or do you have to turn it off every time? It's not clear when they say it will remain off until it is reactivated. What exactly does that mean? Reactivated by the driver hitting the button again? Or does it reactivate upon engine start-up like every other vehicle? And does the drive mode default to Eco when you start the engine? Or does the drive mode remain at the setting when the engine was last turned off?
Since they refer to this function as 'deactivate' I would expect that 'reactivate' means through manual intervention, not just through re-starting the engine. I have not experimented with this yet, but will try next time I am driving the XC40. Drive mode always defaults to Comfort upon starting the car, regardless of the setting when the car was switched off.
 

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Based on what I have seen on other forums Stop/Start operation depends on the software version you have installed. The original version allows manual deactivation but is reactivated at the next vehicle start or when returning from ECO to Comfort mode. With the 18-010 software update, Stop/Start can be turned off and remains off for Comfort mode. With Stop/Start turned off, Stop/Start will be active in ECO but is off when you return to Comfort or next time you start the XC40. Stop/Start is always off in Off Road and Dynamic modes.
 

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Discussion Starter #18
Based on what I have seen on other forums Stop/Start operation depends on the software version you have installed. The original version allows manual deactivation but is reactivated at the next vehicle start or when returning from ECO to Comfort mode. With the 18-010 software update, Stop/Start can be turned off and remains off for Comfort mode. With Stop/Start turned off, Stop/Start will be active in ECO but is off when you return to Comfort or next time you start the XC40. Stop/Start is always off in Off Road and Dynamic modes.
I didn't realize there were different software versions that affected Start/Stop system. I've yet to experience a Start/Stop system in any vehicle that doesn't default to "on" with every engine start. It's a bit of an annoyance on my current vehicle when I forget to turn off Start/Stop after pushing the ignition button. Lucky for me, I discovered a simple solution. I just pulled the voltage sensing wire at the Start/Stop battery and it permanently disables the Start/Stop system without negatively affecting anything else with the vehicle. I was hoping that Volvo had an equally easy solution if the Start/Stop system in the XC40 always defaults to "on" like other cars.
 

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I like the idea of being able to permanently disable the start/stop system, so hopefully someone can verify that there is a wire to disconnect to disable that system.
 

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My XC40 has a switch on the Sensus to disable or enable the Stop/Start function. It stays set either on or off and does not default when the car is turned off.
 
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