Hi,

I have A4 2.5Tdi Quattro 2002 but like new. Recently I made a 120,000km treatment and change the Air Filter to K&N inbox.
After I go out, after 20min, the esp indicator light and won't go off.
This happens every time I drive the car, till I read that it might happen if you change the filter and the MAF go bad.
I take the MAF out and clean it carefully with alcohol. Still the same situation.
Beside it the car is drive very good.
Can anyone now what could be the problem, and how to fix it?

Thank you,
Yuval G.

 

Your cars is telling you something that is wrong. Im assuming its throwing a cel? Either way ide get it scanned. Vagcom it or a local auto store. Start there and post the codes...

 

https://www.audiforums.com/forum/general-tech-50/abs-esp-lights-dash-12484/

 

Thank you,
I will try to check the ABS sensors, especially at the front wheels, I just replace the 2 stabilized bars,

 

i've never seen a bad MAF throw a ESP light.

LOL... you most likely have a bad brake light switch