Author Topic: Stop/Start Still Stopped  (Read 850 times)

Offline Refurbished.

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Stop/Start Still Stopped
« on: 15 September 2021, 10:11 »
I bought my one owner GTI at 7k. It’s on 9k now. Stop/Start has never worked. Previous owner told me he had fitted a new VW battery (due to lack of use) but I was getting low voltage warning when the car was stationary so, as precaution, I bought another new Yuasa battery via Halfords and got them to code it.

Nothing has changed. I’m car display still says power consumption is high, even with everything turned off. I don’t want to pay VW a fee to investigate - any idea how I get this remedied? 

Offline SRGTD

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Re: Stop/Start Still Stopped
« Reply #1 on: 15 September 2021, 11:25 »
Do you have a dash cam or any other accessory fitted that might continue to draw power from the battery when you’re not using the car? What type of journeys are you travelling and how often do you use your car? If your car is used infrequently and on predominately short journeys, those two conditions aren’t the best for good battery health.

You may ultimately need to get the cause of your battery drain checked out to avoid having to keep replacing the battery, which is likely to cost more than paying someone to investigate and determine the cause of the problem. If you don’t want to pay main dealer prices, you could always go to a good independent VW specialist or a specialist auto-electrician, which might be cheaper.

2020 Polo GTI Plus; Pure White, DSG (because they all are)
Gone but not forgotten;
2016 Polo GTI; Blue Silk
2011 mk6 Golf GTD; Carbon Grey
2007 mk5 Golf GT (2.0 170bhp TDI version); Deep Black Pearl
2002  mk4 Golf GTI (the 150 bhp diesel version); Deep Black Pearl

Offline Finglonga

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Re: Stop/Start Still Stopped
« Reply #2 on: 15 September 2021, 15:07 »
Just going of track record here, did YOU see Halfrauds code it or have they just said they coded it?

Offline Talk-torque

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Re: Stop/Start Still Stopped
« Reply #3 on: 16 September 2021, 06:57 »
Another possibility is that the threshold voltage has been raised, using OBD11, or similar, to prevent stop/start.
Roger.

Pure White MY19 GTI PP 5 Door DSG with 19” Brescias.

Offline P6GTD

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Re: Stop/Start Still Stopped
« Reply #4 on: 16 September 2021, 08:17 »
Maybe a stupid suggestion but is the wee sensor wire plugged into the battery?
I unplugged for a while to disable the S/S but ultimately reconnected it.
2019 5Dr Mk7.5 Performance DSG. Indium Grey with DCC (and TCR spoiler)

(Previously two Mk7 GTIs, Mk6 GTI and Mk6 GTD)

Offline SRGTD

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Re: Stop/Start Still Stopped
« Reply #5 on: 16 September 2021, 08:34 »
Maybe a stupid suggestion but is the wee sensor wire plugged into the battery?
I unplugged for a while to disable the S/S but ultimately reconnected it.

That probably wouldn’t explain the high power consumption though that @Refurbished refers to in their original post.
2020 Polo GTI Plus; Pure White, DSG (because they all are)
Gone but not forgotten;
2016 Polo GTI; Blue Silk
2011 mk6 Golf GTD; Carbon Grey
2007 mk5 Golf GT (2.0 170bhp TDI version); Deep Black Pearl
2002  mk4 Golf GTI (the 150 bhp diesel version); Deep Black Pearl

Offline joe6

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Re: Stop/Start Still Stopped
« Reply #6 on: 16 September 2021, 20:28 »
Sorting the high power consumption must be the first priority. If you have a multimeter you could disconnect the battery and reconnect with the multimeter set to measure current and remove fuses one at a time to find the faulty circuit. Long process but could find the fault.
 My stop/start was throwing up errors and identified the neutral position sensor was faulty. There is a vw bulletin for a software update on the 7..5 to fix it and not replace the sensor. This could be the other issue?
Carbon Grey, 2010 a few VCDS mods comfortable family car. Red Scirocco 2011 twin charger stage 1 - enjoyable drive.  White 2016 Polo GTI (roller skate on steroids) replaced with an Indium Grey 2019 7.5 GTI PP.

Offline Refurbished.

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Re: Stop/Start Still Stopped
« Reply #7 on: 16 September 2021, 22:21 »
My thanks chaps. I’ve bitten the bullet. Going into my local VW dealer first week of October. I’ll advise the result.

Offline Refurbished.

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Re: Stop/Start Still Stopped
« Reply #8 on: 12 October 2021, 20:29 »
So, to round this weary take off- into VW. The lights were telling the car they were always on making the car think the battery was low. Which it wasn’t. They have fiddled with software only. VW unwilling to assist - car out of warranty (Reg Nov 17) but full VW history and 10k miles. Now resolved £216.
I never needed a new battery which is irritating. Have a VW OEM unit I don’t need. Might be handy if. Ever need a spare I guess.

Offline joe6

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Re: Stop/Start Still Stopped
« Reply #9 on: 12 October 2021, 23:07 »
Sorry to hear about the expense and no help from vw. That seems to be typical these days. Make sure you keep it 'topped up' if you are keeping it as a spare.
Carbon Grey, 2010 a few VCDS mods comfortable family car. Red Scirocco 2011 twin charger stage 1 - enjoyable drive.  White 2016 Polo GTI (roller skate on steroids) replaced with an Indium Grey 2019 7.5 GTI PP.