Hi all
I've had an A2 since 2007, and there have been 2 A2s in the family since 2008, so as you can imagine I've experienced most of the common faults with A2s.
On my sister's car - a 2003 1.4 TDI 75 (AMF) I'm experiencing a battery drain which is very inconvenient as she doesn't have off street parking so I have to keep going round and taking the battery out and putting it on charge and then go round again to reinstall when it's done.
It lasts about 4/5 days of not being used before it won't start.
It has the original Audi stereo fitted.
I've done a VCDS scan and it originally showed 4 fault codes for the climate control, but on clearing them and running the output test a few times it left only one code - 00727 - potentiometer in positioning motor for defrost flap (g135) 30-00 open or short to plus
(And when the key is in position 2 you can hear the climate control doing something)
But I'm not convinced it's related to the battery drain.
When you turn the key to position 2, the central locking sounds like it locks and unlocks all the doors.
My A2 does not do this.
I was hoping vcds would show that one of the door microswitches is faulty but no such luck.
I've opened each door in turn and each one of them puts the courtesy light on as expected and it goes off after you close each door.
I'm not sure if this fault is related to the battery drain or not but after searching on here it seems that a few members have had parasitic drains and found them to be caused by a door module.
The CCCU is an "AF" model. Which is the same as it is on my A2.
The battery has been tested at Halfords and came back as very good
The alternator is charging
Unfortunately my own A2 has recently been scrapped due to it being written off by insurance, but I broke it for spares so still have many parts left that I can swap and test.
My next steps are:
Swap the CCCU and see if it solves the problem
Measure the current draw by taking the positive terminal off and fitting my multi meter in line and waiting for the car to go to sleep and then pull fuses out one by on and record what happens. I'll probably also take the door card off and unplug each door module and see if that makes a difference.
Any hints/tips/other ideas?
Thanks
James
I've had an A2 since 2007, and there have been 2 A2s in the family since 2008, so as you can imagine I've experienced most of the common faults with A2s.
On my sister's car - a 2003 1.4 TDI 75 (AMF) I'm experiencing a battery drain which is very inconvenient as she doesn't have off street parking so I have to keep going round and taking the battery out and putting it on charge and then go round again to reinstall when it's done.
It lasts about 4/5 days of not being used before it won't start.
It has the original Audi stereo fitted.
I've done a VCDS scan and it originally showed 4 fault codes for the climate control, but on clearing them and running the output test a few times it left only one code - 00727 - potentiometer in positioning motor for defrost flap (g135) 30-00 open or short to plus
(And when the key is in position 2 you can hear the climate control doing something)
But I'm not convinced it's related to the battery drain.
When you turn the key to position 2, the central locking sounds like it locks and unlocks all the doors.
My A2 does not do this.
I was hoping vcds would show that one of the door microswitches is faulty but no such luck.
I've opened each door in turn and each one of them puts the courtesy light on as expected and it goes off after you close each door.
I'm not sure if this fault is related to the battery drain or not but after searching on here it seems that a few members have had parasitic drains and found them to be caused by a door module.
The CCCU is an "AF" model. Which is the same as it is on my A2.
The battery has been tested at Halfords and came back as very good
The alternator is charging
Unfortunately my own A2 has recently been scrapped due to it being written off by insurance, but I broke it for spares so still have many parts left that I can swap and test.
My next steps are:
Swap the CCCU and see if it solves the problem
Measure the current draw by taking the positive terminal off and fitting my multi meter in line and waiting for the car to go to sleep and then pull fuses out one by on and record what happens. I'll probably also take the door card off and unplug each door module and see if that makes a difference.
Any hints/tips/other ideas?
Thanks
James