Mercedes ASR Control ECU ECM Up for sale is a Working, in excellent condition Mercedes ASR / ABS multi function Control unit. This is for W124 E300 models with the first generation ASR - Traction control. The ABS is integrated with this system. This controls the throttle & the ABS system, and other sub systems use it as a pass-threw. This unit commonly fails and causes a whole host of drivability problems with these cars. The cost of a new unit is OVER $2500 from VDO. Get yours here for about 1/6 the price. Good tested used unit with a 30 day warranty. VDO / Mercedes Part number-- 124 545 01 32 . This unit should work with some S-class and E-Class cars with 6 cyl engines & ASR. check your ECU's part numberon your original unit to be sure this is the right one for you.