A3 2010 stop/start

Drewster81

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My a3 2010 has stop/start on it but it doesn't work all the time,is there a reason for this!! Or do I have a problem?

thanks drew
 
It wont work all the time, there are certain circumstances where it wont activate, I believe it has more info in the car manual.
 
Mine doesn't work when the engine is not up to temp, the air con/heating is on above 1 'fan', immediately after reversing etc.
 
As above, I've found that it won't work under these conditions too:

The interior air temp is a lot different to the temp specified on the climate control
The engine isn't up to temperature
Your seatbelt isn't on
The brake pedal isn't pressed
A DPF regen is taking place

The manual says other specifics too, like:
If the car is at a steep angle
If the steering wheel is turned to much (in the auto A4, turning the wheel when off started the engine.
The car determines the battery charge is too low or there is too much draw on the battery.

It's quite clever in the things it checks to see if it's safe to turn off.