Diesel Injector issue W204 Blueefficiency
I have just taken delivery of a black C250 CDi Blue Efficiency, lovely car - all going well, when I suffered loss of power and poor idling 1 WEEK after purchase. MB have told me that the injectors have melted!!!
Anyone experienced this? Apparently, 4 other carsa have come into the dealership today with exactly the same fault!
MB are looking into the issue and once I hear anything, I shall report back to you.
Gee
My own C250 is as yet unaffected but I hope it is new enough to miss the problem..
As I understand it there are very few unsold 220/250 units now and the remaining cars may have been built when there was an issue - most are highly specced (thus remaining unsold).
Have you had your car tuned at all? cheap "boost the fuel rail" boxes from ebay can make the problem come on sooner...
I have just taken delivery of a black C250 CDi Blue Efficiency, lovely car - all going well, when I suffered loss of power and poor idling 1 WEEK after purchase. MB have told me that the injectors have melted!!!
Anyone experienced this? Apparently, 4 other carsa have come into the dealership today with exactly the same fault!
MB are looking into the issue and once I hear anything, I shall report back to you.
Gee


My own C250 is as yet unaffected but I hope it is new enough to miss the problem..
As I understand it there are very few unsold 220/250 units now and the remaining cars may have been built when there was an issue - most are highly specced (thus remaining unsold).
Have you had your car tuned at all? cheap "boost the fuel rail" boxes from ebay can make the problem come on sooner...
My car was built in July 2009, hence once of the early BE engines - I was told that anything post October 2009 build is okay???

MB dealer technician told me that the reason for the failure is due to an overvoltage applied to the injectors at startup, which has caused the injectors to overheat and sieze.
Solution is to obtain a injector pack (hence why C class UK models have been halted in production so far) to replace ALL the injectors, alonside a ECU reflash to correct the problem, and HOPEFULLY that will be it. It is a case by base basis with MB, and currently once they have identified the problem, it takes 7 days for the pack to get to the dealer - then it is a 4 hour fit process.
My dealer has done 7 cars now and all appears to be good. So fingers crossed, and let's see what happens.
Not impressed with problems which MB new aboit before they sold me thecar !!! Should have kept my Range Rover Sprt. 2 yr's 40,000 miles and never missed a beat.
Will be seeing if I can get car sent back.
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Not impressed with problems which MB new aboit before they sold me thecar !!! Should have kept my Range Rover Sprt. 2 yr's 40,000 miles and never missed a beat.
Will be seeing if I can get car sent back.

It is difficult to understand how a brand damaging fault like this could get by the German engineers!!
What is your replacement car ?
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I stick to my maxim - never buy a new vehicle early in it's production phase. I don't care what the Brand. The more complex the vehicle the better the chance of teething problems. Compared with the 203 the 204 has been a surprisingly trouble free vehicle. No more computer simulated endurance testing - back to doing it the hard way on the road in real-world conditions. The 204 forum is testament to this. The things that people complain about are minor compared with the previous generation C & E Class.
Last edited by Glyn M Ruck; Jan 17, 2010 at 05:04 AM.
Unfortunately we have also seen a W212 with replaced injectors fail yet again :shock: ..
Feels like some people at Delphi are in serious trouble now
MB supplied rental C180 Sport after 6 days, which drinks fuel at 21mpg during the recent bad weather and has not guts whatsover. Thought the handbrake was on the first time I drove it!!
Told MB that we are not paying monthly lease on a C250CDI Sport Estate Auto. when they replace it with a C180 Sport Saloon and uses twice the fuel. Said they have passed the e-mail onto the relevant dept !
Not impressed at all with lack of communication from MB when they know they have major problems with these models. Service said they had no real idea on when I would get car back. When pushed he could only suggest 5/6 weeks.

MB supplied rental C180 Sport after 6 days, which drinks fuel at 21mpg during the recent bad weather and has not guts whatsover. Thought the handbrake was on the first time I drove it!!
Told MB that we are not paying monthly lease on a C250CDI Sport Estate Auto. when they replace it with a C180 Sport Saloon and uses twice the fuel. Said they have passed the e-mail onto the relevant dept !
Not impressed at all with lack of communication from MB when they know they have major problems with these models. Service said they had no real idea on when I would get car back. When pushed he could only suggest 5/6 weeks.
Sorry you are having bad luck. Benz seem to have a real issue on their hands.

As you know Delphi has recently come out of bankruptcy protection. Benz got tied up with them because of Chrysler. Time to get the Delphi crap out of their cars & go back to decent German designed Bosch or similar.
Last edited by Glyn M Ruck; Jan 17, 2010 at 08:34 AM.
Sorry to hear about your car and the trouble you have had. The trouble is, the dealers are having to work things on a case by case basis - they send off the details to MB Technical, who will then allocate a 'kit' to replace all the injectors. Mine took a week to sort out - after alot of pressure from me to the dealer saying I wanted to reject the car.
In the end, I decided that no matter how wonderful the car was, I did not want something that was not right from the start - therefore I did a deal with the dealer and ended up getting an E Class 350 CDi BE saloon sport for the same cost as my C250. I pick it up on Wednesday.
Keep up the pressure - go to the dealer and tell him about what you hav read on thsi forum, when they get people talking back to them with a technically sound argument, they start listening.
As for the Mercedes Mobilo - tell them you will find the equivalent car and hire it out and give them the bill and threaten to stop any lease payments you may have on the car until it is sorted out. It worked for me....
Gee.
We are lucky to have an effective lemon law in my state and just mentioning it at a dealer puts them in panic mode.
It suddenly lost power and reduced the speed to 10-15.
I am not really sure what to do with it, the car has already had its injector replaced but i believe they come with 4 injectors and they didnt change all 4 when one of them got melted.
I love the car and i can refund the money but not sure what car should i go for instead.
Its not even a month that i got the car and it really put me off.
Should i give it another chance or i should go for for A4 ?
Last edited by kavehh; Feb 20, 2010 at 07:37 PM.
It suddenly lost power and reduced the speed to 10-15.
I am not really sure what to do with it, the car has already had its injector replaced but i believe they come with 4 injectors and they didnt change all 4 when one of them got melted.
I love the car and i can refund the money but not sure what car should i go for instead.
Its not even a month that i got the car and it really put me off.
Should i give it another chance or i should go for for A4 ?
I was about to upgrade my c class 220 cdi sport estate to the 250 model to gain better performance / mpg.
As it was ( hopefully still is ) the car running really well ( 08 plate with 31000miles ) I decided to look at a ECU upgrade. Still appears to be unknown territory to the lay driver. MB wanted £1600 for the Brabus plugin. So after a little research into the remapping v plugin debate I ended up with a Viezu V Switch plugin into the common rail system. At a discounted £350 because of an aborted attempt at remapping due to a non-Bosch ECU being fitted to my car not accepting a input update This ECU was was during a short manufacturing switch away from Bosch.
Nervous about reports of costly repairs and warranty issues if the engine was over loaded I went ahead. With an added Sprint Booster chip as well the 220cdi is a different car, all for the price of £750'ish including a throaty sports exhaust. The BHP is now appx 210 and with a hefty torque increase. Driven carefully normal day to day mpg around 47 and I have hit 60mpg on the motorway at a steady 60'ish.... just do not put your foot down!
Reading all the threads on the current problem you realize how sophisicated all this techie stuff is, engine management I mean. You kind of wait for the bang, but as yet........
In my experience an under rated engine will last a lot longer. eg low speed diesel generator sets last decades. But it definitely will not be as much fun !!
I would not accept 4-5 weeks as a deadline. Get your dealer to stick his finger out and get it sorted - they are doing this on a case by case basis - ask to speak to the General Manager of the dealership - or the dealer principal - do the things I mentioned in my earlier post, and they willstart listening. Stop your lease payments on the grounds of a known fault not being rectified without failure, and pressure them.
In the end, they do replace all 4 injectors (some only do the faulty ones so check and make sure!) and the car is as food as new. The newer ones have been modified and I know of someone who has had the job done on his 250 and has done 9k miles without a hitch.
Alternately - chop it in, that's what I did get a discount on a new or upgraded car - I managed to get an E350 CDi and there are no problems on those injectors at all (they use the same ones!).

Above all else, don't give up and don't give in - it's a cracking car when it works!
The dealership got back to me 24hrs later with a "Mercedes UK are not willing to purchase the the vehicle back from me." response I am not going to settle for that!
Its disgusting that Mercedes knew about the fault with almost all 220 and 250 from September and still sold me the car in December!
I have had Audis, Land Rovers and VWs in the past and have never been treated by a dealership or a manufacturer like this (not even Land Rover!).
My point is if they had told me in December that there was a 4 in 5 chance of a major mechanical failure of this model I would have not purchased it!
Mercedes Benz UK and Mercedes Benz Hull....NOT GOOD ENOUGH! Poor service, Poor customer relations, Poor design!


