Hi Everyone! I recently bought a Q3 and decided to change the original OEM VARTA AGM Battery (68Ah 380A) with a new VARTA battery recommended by the RAC Shop online which is a VARTA E39 AGM SILVER DYNAMIC (70Ah 760A). I changed new battery myself, and when done noticed the ESP and Power Steering lights came up on the dash which soon disappeared on driving the car a few metres.
The above being said, the CEL (check engine light) came on a few days later which was for the first time, and it does not go away. The car drives fine. I went to Audi and they said more and likely the new battery needs BEMs coding, and as my new battery although suitable will need this coding to the BMS (Battery Management System). Having read some threads there are several ways of doing this, I wanted to know if anyone has had this issue and the best way to resolve the CEL issue? I'd rather not do down the Audi route as I think it will be expensive.
The new VARTA E39 battery has no BEM sticker or serial no# details, only a VARTA code sticker with the number A 26 E39 909 407. I do have the BEM code details from the original OEM AGM Battery that I took out of the car.
Any help and advice would be much appreciated!! THANKS!!
The above being said, the CEL (check engine light) came on a few days later which was for the first time, and it does not go away. The car drives fine. I went to Audi and they said more and likely the new battery needs BEMs coding, and as my new battery although suitable will need this coding to the BMS (Battery Management System). Having read some threads there are several ways of doing this, I wanted to know if anyone has had this issue and the best way to resolve the CEL issue? I'd rather not do down the Audi route as I think it will be expensive.
The new VARTA E39 battery has no BEM sticker or serial no# details, only a VARTA code sticker with the number A 26 E39 909 407. I do have the BEM code details from the original OEM AGM Battery that I took out of the car.
Any help and advice would be much appreciated!! THANKS!!