A6 C7 not starting

[John Sheridan]

Hi all, first time posting. My 2015 A6C7 wouldnt start(start stop not working, Visit workshop) and through up loads of faults mostly including clutch switch, Clutch posistion sensor, and a few on modules not working. 

Car starts on a bump start but not on a jump start. Cleared faults but still no start. Battery is above recommended %. Replaced clutch switch which is connected to master cylinder so £200 and still not starting. Still saying electric module intermittent. 

Any ideas of where the problem is? We were thinking electrical failure in cable to starter. Run a wire direct to starter and it starts no problem. 

Ive had damaged wires on this side of the car before. Had multiple warning lights on dash and was in fact corroded wire in loom to ABS sensor. 4 different cracks in wiring. 

Any idea would be appreciated. 

 

Thanks

 

John

[John Sheridan]

Hi all, first time posting. My 2015 A6C7 wouldnt start(start stop not working, Visit workshop) and through up loads of faults mostly including clutch switch, Clutch posistion sensor, and a few on modules not working. 

Car starts on a bump start but not on a jump start. Cleared faults but still no start. Battery is above recommended %. Replaced clutch switch which is connected to master cylinder so £200 and still not starting. Still saying electric module intermittent. 

Any ideas of where the problem is? We were thinking electrical failure in cable to starter. Run a wire direct to starter and it starts no problem. 

Ive had damaged wires on this side of the car before. Had multiple warning lights on dash and was in fact corroded wire in loom to ABS sensor. 4 different cracks in wiring. 

Any idea would be appreciated. 

 

Thanks

 

John

[Stevey Y]

Hi it could be a damaged wire on the plug for the clutch position sensor, somewhere on here is an old post for an A4 which runs the same system the guy ended up Buying an IDOS system [expensive] but it does electrical test and trace in the wiring loom, other than that I can only suggest a good auto electrician, all this is based on your wiring bypass of the clutch position sensor.

Steve.

[John Sheridan]

Thanks Stevey,

I had an auto spark fix my older problems with the multiple faults around the off side ABS/wheelspeed sensor which he found to be 5 breaks in the actual loom along the firewall/bulk head up around the DPF etc. Im wondering is this same issue with the wiring from starter up in same direction. 

Thanks

 

John