Electronic Parking Brake not disengaging

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cws196

Active Member
Joined
Jan 4, 2013
Messages
448
Car
S205 C250d AMG Premium+
I've had an issue since last Summer on my 2015 S205 where, increasingly, the EPB isn't disengaging (or at least the car thinks it hasn't disengaged)

You depress the brake (as normal) and move the gear stalk to go from P to D or R and a Red warning message appears on the screen 'Release parking brake' and the car will not move - take your foot off the accelerator and then depress the acclerator again and it moves. There's no pattern i.e. engine temp/outside temp/cold or hot start/duration of engine running make no differance and no fault codes are being logged either - but it is getting worse. The only small pattern I've noticed is that if it does it once, you can then get it to repeat over and over if you move between P and D/R.

The car has 3months MB used warranty left and has been in twice now for various software updates - I appreciate it's hard to fix witout a fault code but my concern is with it getting more frequent, at some point the EPB refuses to release and I'm stuck. Any ideas?
 

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As Pete said take it in and ask them to look at it again and impress on them to enter the details of your complaint properly on the job sheet and get a copy for yourself should it arise out of warranty.

Good luck.
Robin
 
Thanks for the replies - yes, it's going back in (again!) and I will be raising the 'what if out of warranty' question.
 
There’s a menu option for replacing rear brake pads which moves the pistons back and forth. You could try running this a few times to see if it frees anything off, it got rid of the warning message on my B Class.
 
There’s a menu option for replacing rear brake pads which moves the pistons back and forth. You could try running this a few times to see if it frees anything off, it got rid of the warning message on my B Class.
Thanks but via my iCarsoft I have established the actual EPB/motor is working fine. The issue lays before that, I think, with the signal to disengage the brake. I've also tested if you can overide the warning by pulling the EPB switch and then work i.e. EPB disenages and car will then move/warning stops.
 
Thanks for the replies - yes, it's going back in (again!) and I will be raising the 'what if out of warranty' question.
I think we all know the answer to that. You will be paying.
To have ANY chance at all of having it fixed after the end of the warranty you will need to have an email trail with the service manager of the visits and outcomes of the investigations; even then I doubt that you will get anywhere.
 
I think we all know the answer to that. You will be paying.
To have ANY chance at all of having it fixed after the end of the warranty you will need to have an email trail with the service manager of the visits and outcomes of the investigations; even then I doubt that you will get anywhere.
Yep.........
 

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