paddyoheater
New Member
Hi there, sorry that my first real post is a cry-for-help!
I am hoping this is a simple battery coding issue, but need advice.
Car is 2006 A6 2.0 tsi automatic which I bought last year. Had a dead battery in the used car dealer lot, so he fitted a new battery (76Ah 650A) before I took delivery.
Battery lost charge after a few weeks, and dealer has been unable to sort the issue. He did make a decent effort but I don't think was equipped with VAG specific diagnostics.
My own probing with a multimeter shows that it the Battery (engine off) has 12.2v across the terminals, I also get 12.2v at the Charging point under the bonnet.
With the engine running I am seeing 14.2v off the alternator, and at the charging point, but only 12.3 /12.4 v at the Battery.
I am not getting any non-charging warning lights.
Other electrical issues have arisen, -maybe related to low voltage? -the Radio stopped working but does generate a random clicking sound , and the light cluster around the AC controls flicker in time, and the front cigarette lighter is dead (fuse is ok). On a traditional setup I would assume a bad connection / earth, and start poking about, but I am a bit scared of circuit boards and computer controlled gizmos!
I am guessing the first thing to get sorted is the charging, so is it a case that the car must be coded to a new battery, or will it learn over time that a new battery is present ?
Its a lovely old bus in all other regards, so hopefully your experience and advice will have it sorted.
Thanks for reading.
I am hoping this is a simple battery coding issue, but need advice.
Car is 2006 A6 2.0 tsi automatic which I bought last year. Had a dead battery in the used car dealer lot, so he fitted a new battery (76Ah 650A) before I took delivery.
Battery lost charge after a few weeks, and dealer has been unable to sort the issue. He did make a decent effort but I don't think was equipped with VAG specific diagnostics.
My own probing with a multimeter shows that it the Battery (engine off) has 12.2v across the terminals, I also get 12.2v at the Charging point under the bonnet.
With the engine running I am seeing 14.2v off the alternator, and at the charging point, but only 12.3 /12.4 v at the Battery.
I am not getting any non-charging warning lights.
Other electrical issues have arisen, -maybe related to low voltage? -the Radio stopped working but does generate a random clicking sound , and the light cluster around the AC controls flicker in time, and the front cigarette lighter is dead (fuse is ok). On a traditional setup I would assume a bad connection / earth, and start poking about, but I am a bit scared of circuit boards and computer controlled gizmos!
I am guessing the first thing to get sorted is the charging, so is it a case that the car must be coded to a new battery, or will it learn over time that a new battery is present ?
Its a lovely old bus in all other regards, so hopefully your experience and advice will have it sorted.
Thanks for reading.