I have an A6 C6 2008 Allroad. Suddenly while driving I got a long bleep and the ESP, ABS and suspension pump lights came on. I was driving back from Spain at the time so couldn't do very much but it didn't seem to affect anything. The ESP off switch does nothing now. I don't know if ESP and/or ABS are working but the suspension pump is still working even though the light is on. The only thing I have noticed different is that when using cruise control it no longer automatically brakes to maintain the set speed. It accelerates fine but does not slow the car down on a hill. When you first start the car sometimes there is a delay of up to 10 minutes before the lights come on and sometimes they come on immediately. I have visually checked all the fuses for the ABS and ESP and they are fine.
I can't find any other posts which mention these 3 lights. Has anyone any ideas? All help appreciated, thanks.