JohnD06

Hello,

I have an issue with my Audi A4 B8 for a few months. It started with all ABS/ESP/TPMS and Brake lights flashing while driving for like a second and disappear. And those lights kept flashing even while staying. I went to lots of services and there are no error codes. Also went to Audi dealer and tried with another instrument cluster and ABS pump but nothing was solved. The lights still appears. Some of the time the ESP and TPMS lights are on for a long time, even when they are on for long time, no issue codes of VCDS or VAS. Also changed the battery to a new one but not original, even the same manufacturer and model (Varda AGM Silver 105Ah) but I am not quite sure about the coding of battery that was done as in VCDS the only capacity that suits is 103Ah or 110Ah not 105Ah.

Recently the speedometer dropped repeatedly from 60-70km/h to 0-10km/h while driving and came back to the real speed very quick.

I did not find any issue like this on any forums, everyone having lights on also had error codes. Mine doesn't.

Also I had the wires verified and told me that everything looks fine.

Any suggestions?