A6 Avant 2007 battery drain issue (only when cold)
Discussion
Hello,
posting on behalf of a friend who is having issues with his car, hoping someone on here may be able to shed some light on the matter...
He has an Audi A6 Avant 2007 diesel 2.0 TDi with a battery drain problem that only occurs in the cold weather if the temperature drops to below 3 degrees.
With the car locked and shut down and even after many hours, when the outside temp drops below 4 degrees the hazard warning light comes on, he believes means a module is now live, this in turn activates the satnav drive and is drawing about 5 amps the process lasts about 5 mins and then everything shuts down again, hazard warning light goes out satnav down powers and all is good for the next 10 mins, the process then starts again its as regular as clockwork, if temp outside if the outside temp is 4 degrees the process doesn't even begin and car is happy. The car has been to local garage and they found nothing and he has done some things that he has read on forums. Currently he has checked all door switches and replaced a sticky passenger door lock, changed brake light switch, though he thinks it was fine but just to rule it out as a cheap fix, and it did have a faulty rear light but this has been replaced, he has also checked for water ingress under floors and in the boot etc but found nothing, finally the battery has been tested and is only 9 months old.
He has removed the fuse for instrument cluster as this stops the satnav starting up but the current draw is still 900mA when the process takes place, so something is still going on? The process seems to disappear if he removes fuse 13, drivers side, which is for the Steering column switch module, so could it be just this the module at fault? or is something still talking to the module when the temperature is cold enough?
It is the temperature related part of this that has us really scratching our heads...
Any help appreciated.
posting on behalf of a friend who is having issues with his car, hoping someone on here may be able to shed some light on the matter...
He has an Audi A6 Avant 2007 diesel 2.0 TDi with a battery drain problem that only occurs in the cold weather if the temperature drops to below 3 degrees.
With the car locked and shut down and even after many hours, when the outside temp drops below 4 degrees the hazard warning light comes on, he believes means a module is now live, this in turn activates the satnav drive and is drawing about 5 amps the process lasts about 5 mins and then everything shuts down again, hazard warning light goes out satnav down powers and all is good for the next 10 mins, the process then starts again its as regular as clockwork, if temp outside if the outside temp is 4 degrees the process doesn't even begin and car is happy. The car has been to local garage and they found nothing and he has done some things that he has read on forums. Currently he has checked all door switches and replaced a sticky passenger door lock, changed brake light switch, though he thinks it was fine but just to rule it out as a cheap fix, and it did have a faulty rear light but this has been replaced, he has also checked for water ingress under floors and in the boot etc but found nothing, finally the battery has been tested and is only 9 months old.
He has removed the fuse for instrument cluster as this stops the satnav starting up but the current draw is still 900mA when the process takes place, so something is still going on? The process seems to disappear if he removes fuse 13, drivers side, which is for the Steering column switch module, so could it be just this the module at fault? or is something still talking to the module when the temperature is cold enough?
It is the temperature related part of this that has us really scratching our heads...
Any help appreciated.
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