E220d (oil in brake servo) £5600 bill for repairs

JBell

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This is truly appaling!!!! Terrible service and shocking longevity on parts!!!!!!
 

Jim2

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Still many out there. An acquaintance of mine has a 520d which decided to pack in on the motorway just before Christmas. Timing chain. N47 engine. £800 to fix and they got off lightly!
Up to very recently here in Ireland, BMW were either doing engine replacements, where the chain had actually destroyed the engine, to pre-emptive repairs, replacing the chain, tensioners and timing gears. The local BMW dealership, were working flat out doing warranty work on these N47 520 engines.
 

moj91

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Up to very recently here in Ireland, BMW were either doing engine replacements, where the chain had actually destroyed the engine, to pre-emptive repairs, replacing the chain, tensioners and timing gears. The local BMW dealership, were working flat out doing warranty work on these N47 520 engines.
I can understand why dealer groups are investing so heavily in the used 'car supermarket' market, they must be sick and tired flying the flag for their marquees to spend so much time dealing with poor design and manufacturing problems and keep customers happy. I know a couple of master tech's for other brands and the time/funds they are allocated for the recall and warranty work rarely equals the time and effort actually taken, which then equates to issues from rushed jobs.
 

moj91

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Update: as it is relevant to the OP - i have reported the brake failure element of my incident to VOSA, they have quickly come back to me and i have offered them a detailed account of my experience. They have also assigned an engineer to my 'case' and told me that it appears to be under the same circumstances as a number of other reports they have had. They tell me they are in discussion with Mercedes UK due to the safety criticality element. Fingers crossed for a full recall, which may assist the OP from a financial standpoint if they are not successful with a goodwill claim.

OP - if you read this, make sure you file your own VOSA report. It will help you and everyone else if this matter needs to escalate.
 

barian

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Can anyone who is suitably knowledgeable advise how this failure, with the resulting loss of servo assistance, affects the operation of the automatic emergency braking (i.e collision avoidance/mitigation) systems? Will these experience reduced performance or will full braking still be achieved?
 

Blobcat

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Can anyone who is suitably knowledgeable advise how this failure, with the resulting loss of servo assistance, affects the operation of the automatic emergency braking (i.e collision avoidance/mitigation) systems? Will these experience reduced performance or will full braking still be achieved?
If the servo is compromised then the emergency breaking will also be affected as it uses the same braking system. It just uses a different system to activate it (radar from the front grill rather than the drivers foot)
 

Jim2

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If the servo is compromised then the emergency breaking will also be affected as it uses the same braking system. It just uses a different system to activate it (radar from the front grill rather than the drivers foot)
I can understand the brake servos being out of commission for one reason or another, but should not the manual function still be active? Albeit with a much harder effort required?
 

Blobcat

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I can understand the brake servos being out of commission for one reason or another, but should not the manual function still be active? Albeit with a much harder effort required?
It will be, but it will feel like you’ve no brakes at all, standing on wood if you will
 

Jim2

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It will be, but it will feel like you’ve no brakes at all, standing on wood if you will
Yes, I can imagine, especially with disc brakes,whatever about drum brakes .
 

Jason63

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I bet the vacuum pump is made by an OEM manufacturer and bought in by MB.

Now...BMW had a major recall on vacuum pumps on at least E60/E61 petrol 5 series. The same failure: the vacuum pumps failed, oil gets into the vacuum system and deteriorates the rubber diaphragm in the brake servo. The result is a loss of all braking assistance. In theory the brakes could be operated with additional pressure but in reality it was like having no brakes.

BMW managed to hush it up and the recall, was I think, only in the USA despite identical engines here in the UK. They also managed to restrict the recall to petrol engines - yet the exact same setup and failure was also seen in diesels.

I would hazard a guess MB use the same vacuum pump supplier.
 

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