c230 Pumping Brakes
#1
c230 Pumping Brakes
I just got my speed sensor replaced, the hub cleaned and "fixed" whatever that means. 2 weeks later: The brakes pump and the abs comes on when I push down on the brake pedal to stop, and the abs/bas lights come on intermittently, with no regular pattern. Does anyone have any suggestions? I'm tired of having mechanics "fix" it, and paying $1,000 every time it goes in for the same problem.
#3
c230 Pumping Brakes.
Reply: Assuming your wheel ABS sensors are working....then it could be the brake light switch. I had the same problem and changing the switch solved it. Do a search on this forum. Just type in 'Brake light switch'.
Reply: Assuming your wheel ABS sensors are working....then it could be the brake light switch. I had the same problem and changing the switch solved it. Do a search on this forum. Just type in 'Brake light switch'.
#4
Thanks
Thanks very much. I got both speed sensors replaced, and they cleaned the hubs. The brakes still pump when I first turn it on and back out of my space, and when i brake the first time in drive. I took it to the mechanic, and they found nothing wrong with it. They checked everything else, but nothing seems to be a problem. And the lights don't come on when it pumps. Would it have anything to do with the abs control module? Mercedes dealership said I had to replace it, but I think it's a crock. Also, where can I get cheaper good quality shocks other than the dealer? The place closed where I normally go, and having worked at autozone, I know their parts are low quality.
#6
I have a 2009 SL550. Recently, the primary keyfob I use fail to start the car although it can unlock the door. The error msg shown on the display dashboard is "ABS and ESP Inoperative. See Owner's Manual". I replace both batteries but still can't start the car. I called the MB shop mechanic and he told me to try the less used keyfob. To my surprise, it actually works. Eventually, I learned that there is a life span on the chip in the keyfob on how many times it can start the car. Now, I just need to get a new keyfob.
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