Mk7 Stop/Start System - Issues and Questions

Had a problem with the SS system on my GTI PP ever since I've had it (about 6 months). Like other people on here have said, sometimes when you come to a stop the system won't work at it show an error of "Engine must be running for SS system to work". Sometimes cycling the shifter to Park then back to Drive cures the problem. The problem only happens every now and then. In fact its been fine for weeks then today it happened on my way home from work.
Any clues on what could be wrong with it? I mentioned it to the dealer when the car was there for an unrelated issue and they said they couldn't find any faults.

MK7 DSG Comfortline, 30k on the speedo, just had my 24months service a month ago.

Driving with start/stop active. Car stops at traffic lights (or intersection) and engine turn off. Once ready to go I lift foot of brake and step on accelerator and the car auto restarts normally BUT in these few weeks the car tries to start but it does not start. So I have to put the gear back to P and restart manually. It has happened around 6 times already.

Is anyone having a similar problem ?

Take it back to the dealer and get it fixed under warranty.

It could be a faulty starter motor.

Just booked my car in for a look at the start/stop this week. Will update once...

Car takes alot longer to engage into 1st gear when I stopped on a slight uphill slope, is this normal?

I stopped using this S/S function after I found out some blown up turbos were cause by the S/S, I wish I can find someone in my area with VCDs to disable it.

Update, after leaving my car there for a day, vw could not find any issues. Battery was tested, all firmware is up to date.

Funny thing was it did not happen all all on the way to the dealer or a few days afterwards. However it did happen once yesterday. I will leave it until it gets worst.

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Originally Posted by firstvw

Update, after leaving my car there for a day, vw could not find any issues. Battery was tested, all firmware is up to date.

Funny thing was it did not happen all all on the way to the dealer or a few days afterwards. However it did happen once yesterday. I will leave it until it gets worst.

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I don't like the idea of using stop-start with Turbo engines, I'm probably being overly paranoid but I'd rather have oil flowing than worry about damage from heat soak.

I always turn mine off first thing, I will probably get it defaulted to off at first service.

Hope they sort your issue with it.

Quote:

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Originally Posted by firstvw

Update, after leaving my car there for a day, vw could not find any issues. Battery was tested, all firmware is up to date.

Funny thing was it did not happen all all on the way to the dealer or a few days afterwards. However it did happen once yesterday. I will leave it until it gets worst.

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firstvw:Hi.
the next time that SS goes pear-shaped, why not have a look at the car's self reporting screen? Not sure if you are aware of this facility, but the discover media/pro has a screen that is dedicated to telling the driver why SS won't work. I wrote a post earier in this thread describing how to access the screen. You can find the post HERE.

if you take a photo of the screen when next you have a problem with SS, you will have a good piece of information for the dealer when you go back for another visit

Don

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Originally Posted by Imolator

I will probably get it defaulted to off at first service.

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Imolator: Hi.
I will be delighted to be proven wrong, but I suspect that your friendly dealer service manager will not be able to set up SS to default to off. In fact, I doubt that your friendly dealer service manager will agree to change the factory settings for SS in any way - at all. This has been my experience with a number of friendly dealer service managers in regards to SS.
In the end, I dealt with the problem by buying a VCDS cable and doing the fix myself. It was one of my earliest tweaks - best change that I have made to the car! My mk7 doesn't default to off, I have disabled SS entirely from the vehicle.
Don

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Originally Posted by DV52

Imolator: Hi.
I will be delighted to be proven wrong, but I suspect that your friendly dealer service manager will not be able to set up SS to default to off. In fact, I doubt that your friendly dealer service manager will agree to change the factory settings for SS in any way - at all. This has been my experience with a number of friendly dealer service managers in regards to SS.
In the end, I dealt with the problem by buying a VCDS cable and doing the fix myself. It was one of my earliest tweaks - best change that I have made to the car! My mk7 doesn't default to off, I have disabled SS entirely from the vehicle.
Don

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If that is the case I will have to get a VCDS cable and do it myself. Thanks for the info!