W210 E320 Abs Esp Bas confusing problem

Smaltze

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E320 S210 2002
Hi all, i know this is a common problem but mine seems odd and unique.

When driving after about 5 minutes normally, can take alot longer, all 3 of the warnings come on. Abs, Esp and Bas. They seem to come on when traveling at a constant speed i think, not atall when touching the brake.
I can restart the car and the warnings turn off for another 5 minutes.

What is strange is that when i took my car abroad driving 3000 miles, for about a month or two of it the problem disapeared. it simply wouldnt give me any problems no matter how far i drove.

I could change the brake light switch sure, if people think thats it.
I have cleaned both front wheel speed sensors and the reluctor ring teeth.
I havnt done anything to the rear one, maybe its that?

Another problems im having is my brake lights will get stuck on, and the entire right side of them wont work. Its not the bulbs as they have been seen working and the parking brake puts them on. Sounds like an earth, is that it? if so where are the earths i should be checking? This seems to happen independent of whether and 3 ABS lights pop up.

One final possibly related problem is an odd problem with the power. it doesnt allways do it, but sometimes if i drive very slowly and steadily for a good amount of time, ill loose total torque and it wont kickdown well. If i put my foot down it will very slowly limp up the revs and eventually gain torque and change gear, still drives like normal otherwise. Its not like the normal limp home mode when it wont change gear. BUT, turning off the car and back on seems to fix this problem for about 10 minutes. As i said sometimes i can go for as long as i want and not have this problem, great kickdowns and hard torque whenever. It doesn't only happen when the 3 ABS lights come on, seems seperate.

Anyway my main problem is these 3 lights coming on and the brake lights staying on.

I could source somewhere to give me a STAR reading, but i figured that'd be costly.
Any ideas people? Thanks!
 

toby1

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I had this and it was a brake light switch. For £12 it's a cheap fix and if it isn't, you'd need one soon anyway
 

television

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As Toby, always the best £12 ever spent :D
 
OP
Smaltze

Smaltze

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Righto, ill go and grab one today. will update when its in.
 
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Smaltze

Smaltze

Senior Member
Joined
Aug 13, 2015
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172
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Your Mercedes
E320 S210 2002
  • Thread Starter
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problem seems to be solved, cheers!
 

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