Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting

Honest John Back Room » Technical matters
View Threaded
Sat 7 Dec 2013 12:59
Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting - SimonParton
After 70k miles the stop start is failing to restart the car. Happens about once a week and is sporadic. Audi agent has tried to fix without success as no failure code is logged so they don't know why.
Last time took 3 goes to restart.
Any help appreciated.
Also how do I permanently turn it off? Agent claims this is not possible.
Reply | Report as offensive | Link
Sat 7 Dec 2013 16:55
Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting - elekie&a/c doctor

I guess this is the beauty of modern day electronics and diagnostics.Great when it works but a real pain when it is erratic.Is it possible that the battery is below par .Any low voltage here will prevent the system from operating.I would think that the system could be turned off with suitable equipment via the diagnostic link.hth

Reply | Report as offensive | Link
Sat 7 Dec 2013 17:17
Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting - RT

Most cars with Stop/Start have battery condition/charge as twoe of the parameters determining if the engine goes into the mode at all - if the battery is discharged then the engine should keep running.

Reply | Report as offensive | Link
Sun 8 Dec 2013 06:52
Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting - Collos25

VWs have a switch on the dashboard to turn of the SS I cannot see Audis been any different

www.audi-sport.net/vb/a3-s3-sportback-8p-chassis/1...l

http://www.audi-sport.net/vb/a3-s3-sportback-8p-chassis/158672-do-you-use-start-stop.html

Edited by Collos25 on 08/12/2013 at 07:00

Reply | Report as offensive | Link
Sun 8 Dec 2013 08:51
Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting - skidpan

When the stop/start acted up on my BMW 118D the problem was the battery. Luckily for me it was under warranty since batteries for stop/start cars are quite a bit more expensive than ordinary batteries. They sometimes need programming into the ECU so are not a simple DIY fit even if you can find one.

Reply | Report as offensive | Link
Thu 12 Dec 2013 13:06
Audi A3 Sportback tdi DSG - Audi stop start now 50% effective - not starting - slkfanboy

In general BMW's need their batteries coding and yes stop/start requires a battery with larger capacity, so costs more.

In general if the battery is low on charge, then the car should not stop engine in the first place. Thu it sounds to me the car is turning over but not starting? i.e. maybe a hot start issue?

Reply | Report as offensive | Link