ASR problem in S 500 M/Benz
Asked by Matovolwa Apr 11, 2008 at 12:51 PM about the 1994 Mercedes-Benz S-Class
Question type: Maintenance & Repair
I own a 1994 S 500 Mercedes Benz. For about 6 months now a ASR lights on. I have replaced throttle and tires but still the ASR lights on. Please help me what could be the cause and how can be rectified.
David,
6 Answers
littlehorn answered 16 years ago
Might have to take this to a dealership.
etoussaint2 answered 13 years ago
Mostly this problem appends on winter time. I f you take your car to the dealership you could throw your money away like many people did and the problem still not solve. I fixed mine definitely by myself and you could do it too. 1- Open the hood, Jack the vehicle. On both front tires you will see a cable that looks like a Rca jack that connect to the brakes but it's bigger than RCA jack. 2- Follow that RCA cable to the hood and on the other end tou will see 2 small white wires that bring power to ASR and ABS system cut those 2 wires and you automatically disable the ASR and you solve the problem. As you know the ASR system is good for snow, it's like a 4 by 4 and you will need it later to drive safely in bad weather when there is snow. What to do next. After cutting the 2 small wires, I put 2 swiches in case I need the ASR in bad weather.One swich for ASR and the other one for ABS. when you cut one wire you connect both ends to the swich and you do the same for the second wire that you cut. The only one thing you will see is the ASR and ABS light will turn on on the dash. When driving in bad weather, open the hood and turn on the swich.
crusier6969 answered 8 years ago
Where on top isn't see two white wires I see only color wires
94 w140 420. My light come on after abs pump stops ( like 30sec) you can try to start your car and put your hand on the abs body ( its loud) right after its stops asr comes up . My problem was a pre-charge pump for asr located under the master cylinder , it’s accessible only when you take the master cylinder out . 4 wire connector its in the wire chase brown green is + brown is - . Just find a 18v battery frim your drill or so and test.
Additional info: my pre charge asr pump was seezed with white powder in the pump section . Some will tell you they take the whole body appart and look for water damage in electric section due to drain canals being cloged with debris . I found one in one of the u pull it yards and test before i took it out from a donor
I'M HAVING THE SAME ISSUE WITH MY 1994 S500 MY MECHANIC RECOMENDED TO CHANGE THE WIRING HARNESS SINCE ITS AN OLD CAR
