Hi folks. So just joined and the 1st thing I want to do is pick your brains, well those who know more than me on the Audi and that will be 99.999% of you.

My story is. I have run Volvo XC90's for the last 7/8 years and kind of fancied a change and this Audi A6 Quatro came up locally. My last Audi would have been a 200 about 40 years ago. Now this A6 came to me via a local advert. Lady owner driving through nearby town when the car dies on her. Recovered to local mechanic who diagnosed primary fuel pump, fuel pump sourced and fitted into the tank. Here things stalled for a couple of months as the car was about due an MOT. Parts purchased for MOT and fitted (brake pads and discs etc) but the car had by then been sitting for several months and the battery by now was dead. Lady owner then decided to sell it as is as she had to buy another car for travel to/from her place of work. Enter me. Purchased said car, mechanic fitted the half charged original battery which obviously had nothing like the volts required. I then purchased a new Yuasa battery (read expensive) and stuck it in the car. Everything then powered up and the pump could be heard priming. Dash all light up, lights, windows etc all live. BUT, turn the key and nothing except message on the dash. Battery low, will recharge while driving. ESP fault see owners hand book, and a constant beep. Battery removed and stuck on a charger over night when it was then checked at 13.8 volts. Battery reinstalled and same result and messages messages. I've read some postings about brake light switch and EMC. So any pointers, hints and tips would be greatly received.

Forgot to add, I'm old school spanner man and not into computers and diagnostics. But I do possibly have access to someone who does.

 

TIA.

 

Newbie. John.

Edited January 19, 20242 yr by John Walsh

Hi John you may find that the battery needs coding to the ECU, the majority of newer cars need to have the ecu told what the battery is etc, to do it you will need OBDeleven or VCDS (used to be called VagCom) and as much information from the new battery as possible. I don't want you to think I am asking a silly question but you are 100% sure the old battery it is the correct battery for the vehicle, correct amperage and CCA etc, and the new 1 you have bought is also correct

Thanks Darryl. I did wonder and asked someone more knowledgeable than me about modern motors and they didn't think it would due to age of the car as it's a 2010. I will double check now though and cross my fingers its that simple.

 

John.

Welcome to the forum you'll find the members on here are a friendly and helpful bunch. I believe coding started coming in from 2007. So I believe your battery will need coding. 

Hi Steve and thanks for that. Plan is now to get her coded on Monday and fingers crossed she will run. I am a member of several forums and as founder of Club Lotus North East Scotland, I obviously go through a fare few and have always found them to be helpful and a bit of fun. The Audi group looks to be the same. The plan for the A6 Quatro is too tow my covered trailer for my show cars and too replace my existing one which is I think my 5th Volvo XC90 and just fancied a change. Hopefully it all works out.

 

John.

51 minutes ago, John Walsh said:

Hi Steve and thanks for that. Plan is now to get her coded on Monday and fingers crossed she will run. I am a member of several forums and as founder of Club Lotus North East Scotland, I obviously go through a fare few and have always found them to be helpful and a bit of fun. The Audi group looks to be the same. The plan for the A6 Quatro is too tow my covered trailer for my show cars and too replace my existing one which is I think my 5th Volvo XC90 and just fancied a change. Hopefully it all works out.

 

John.

Should be a great tow car.  

Sounds like an ecu issue