My abs light, parking brake failure, and esp lights all came on at the same time while driving my 2005 audi a6 4.2 s-line model through a sudden snow storm in colorado. my abs immediately failed and my brakes locked, causing me to lose control of my vehicle, and fortunately i avoided a crash (i was at low speeds). the quattro all wheel drive was also disabled at this time and i was unable to gain traction on the icy road. this could have been a devastating crash resulting in injuries if i had been going the speed limit that night. i immediately took my car in for service on 12/2/09 and was told i needed to have the abs module replaced at a cost of around $1600. why was this not a recalled part? according to the service tech at stammler audi in boulder, co it is a very common problem with the 2005 model year because it is the first year to have some new technology involved in the vehicle's driving systems. i am extremely upset that there is nothing i can do but pay out of pocket for a defective part, that audi also agrees with, just to drive safely on the roadways. *tr