Mercedes "CCollision Prevention Assist Plus inoperative"
Discussion
As above, the dreaded message. No lock out but an MOT faiure. It seems that only a Main Dealer can reset? I am quoted £228 for "diagnostics" PLUS £228 to recalibrate/reset.
Is it me or is this extortionate?
Do other Marques have similar problems and ensuing costs?. he car is only a W205, so hardky "luxury".
I replaced the battery some time ago, and was showing 12.1V.I charged it to "Full" on the the smart charger. If the problem was slightky low voktage, would the message generally remove itself?
I would appreciate any help or thoughts, thanks?
Is it me or is this extortionate?
Do other Marques have similar problems and ensuing costs?. he car is only a W205, so hardky "luxury".
I replaced the battery some time ago, and was showing 12.1V.I charged it to "Full" on the the smart charger. If the problem was slightky low voktage, would the message generally remove itself?
I would appreciate any help or thoughts, thanks?
Unfortunately, this is modern technology for you, however, it's not unique to MB.
You don't necessarily need to have a main dealer look at it but you almost certainly will need someone with access to Mercedes' STAR diagnostics, so most likely a Mercedes specialist. They'll probably be a little cheaper, but not always by a lot, depending what you have done and where you're located.
The diagnostic fee you quote is about normal for a main dealer, a specialist will probably be a little less for that.
If you don't know a decent specialist locally and don't have any joy on this thread, you could try asking on here:
https://forums.mbclub.co.uk/
You don't necessarily need to have a main dealer look at it but you almost certainly will need someone with access to Mercedes' STAR diagnostics, so most likely a Mercedes specialist. They'll probably be a little cheaper, but not always by a lot, depending what you have done and where you're located.
The diagnostic fee you quote is about normal for a main dealer, a specialist will probably be a little less for that.
If you don't know a decent specialist locally and don't have any joy on this thread, you could try asking on here:
https://forums.mbclub.co.uk/
My merc CLS always clears warnings when I've fixed a problem.
As suggested above, get the error read by a specialist with STAR; this will be absolutely specific on which sensor has failed. A specialist will charge well under £100 for a diagnostic session (the last one I had just to read a code was free of charge). If its the forward facing radar then these are big money new- £600 plus (and the bumper has to come off to fit), but you might get lucky with a used one, or even the chinese-made OE-spec ones.
It could also be the wiring or connector, though less likely with a forward-facing sensor.
Or it may just be it needs resetting if, for example, something has hit it. My car got upset after a low-speed collision with a Muntjac and threw a similar error, but then it resolved itself.
The radar sensors are a pain- I have three dead units sitting on my desk as the rear ones keep failing!
As suggested above, get the error read by a specialist with STAR; this will be absolutely specific on which sensor has failed. A specialist will charge well under £100 for a diagnostic session (the last one I had just to read a code was free of charge). If its the forward facing radar then these are big money new- £600 plus (and the bumper has to come off to fit), but you might get lucky with a used one, or even the chinese-made OE-spec ones.
It could also be the wiring or connector, though less likely with a forward-facing sensor.
Or it may just be it needs resetting if, for example, something has hit it. My car got upset after a low-speed collision with a Muntjac and threw a similar error, but then it resolved itself.
The radar sensors are a pain- I have three dead units sitting on my desk as the rear ones keep failing!
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