azngr00ve

My 2010 E350 4matic's check engine light came on Sunday afternoon (1/3/10). I brought it to the dealer on Monday morning and the error was diagnosed as a computer glitch and a firmware/software was upgraded.

The light came back on Tuesday night so I brought my car back to the dealer on Wednesday, 1/6/10. My service advisor assigned the shop foreman to my vehicle. Later that evening he told me that they saw that my car registered 30+ instances of various errors including emissions alerts, fuel system failures, and ignition issues. They were so concerned that a regional maintenance representative from Mercedes was traveling to the dealer today (1/7/10) to work on the car.

I'm planning to visit the shop tomorrow to obtain a progress update.

Has anyone else experienced a similar problem?

220S

Whatever the issue, it's not W212 specific. Check the W211 boards (same motor.) But there has been no known real problems; the V6s have been pretty solid. Probably a software/electronics problem specific to your sample (that's where the gremlins really reside.) Good luck with it.

DHI

re-boot !!

rieger

I had engine failure in my E500 due to metal fatigue. I think it is more common in the V8 than the V6's though.

azngr00ve

root cause was a faulty purge valve in the emissions system

this fault code had a cascading affect and kicked-off a variety of other codes

my service advsior told me that my W212 was the first to come in with a check engine light and since it has very few miles, MB HQ wanted to diagnose and be part of the resolution. if it were a supplier related problem, they would initiate a recall, but this one seems specific to my vehicle for now

part is arriving this morning and should have her back this evening!

silberrosa

Far from a major engine failure as your title suggests. You have a CEL or check engine light. These go off for various reasons and it is good to see that MB is getting on it with some enthusiasm. Having experienced a real major engine failure (in a track car) I can tell you there is quite a difference and you know the motor is certainly a goner. (smoke, very bad sounds and some flames) I don't recommend it
Let's hope this fixes the problem. Good luck.

vselva

Things do happen sometimes!! It is good to hear the root cause was diagnosed so quickly. Hopefully it will be back on the road normally. Let us know the status after the fix.

blazeone

I'm sorry but your title of major engine failure vs what issues you experienced are not related in the least. If you weren't an owner I woud think your post was the work of a troll or drama queen.

I'm glad the tech's fixed it. That really shouldn't be any surprise as the car is in waranty and the E classes have very few BIG issues if any.

chilledbenz

Cut the original poster some slack. Anytime a brand new car throws up a check engine light you start to think of the worst case scenario. Add to his frustrations when he hears that there are over 30 errors and you can see where his mind was going when he titled the post. In these new cars it only takes one part to fail before all the systems notice something and send off alerts, this is good, you know the systems are doing their jobs. Its also nice to see MB standing behind their product and finding the root of the problem quickly.

mg-E550

+1. Down Boy!!! Down!!

azngr00ve

1/8/10 update - part is on back order until the end of the month. my service advisor said the vehicle is drivable, but with high emissions output as the only side effect. since faulty purge valve is still causing the check engine light to remain on, i'm parking it until the replacement part comes. i'm fearful that the persistent check engine light due to the purge valve might mask a legitimate error that may come up between now and the end of the month. euromotorcars is keeping my ticket open for the time being. driving the SLK at home in the meantime.

mg-E550

Wow. End of month? that's ridiculous. did they offer you a loaner?

azngr00ve

part is on back order. they gave me a loaner while diagnosing the problem, but said that since the car is technically drivable, that i should treat it as if nothing was wrong. i'll play it safe and just keep it at home until it arrives.

i REALLY hope this is the root cause of the check engine light and that another electrical or physical failure doesn't come up after the purge valve repair

Kar don

part is on back order??? tell em to take a purge valve from a car on their lot.

El Cid

Agree with you 100%. If my M-B threw up a check engine light and they had to bring in MBUSA experts to analyze, I would call it a major engine (component) failure.
See the owner's latest posts. I would worry about driving the car as well and would be on the phone to MBUSA CEO re: a loaner. This is NOT the type service you expect from M-B.

sosh

You sir are an alarmist. You did not have a major engine failure or a catastrophy as you led readers to believe with the title of this post. What you did experience was a minor failure of a component that still allows you to use your vehicle in a normal fashion. I would hate to see what you call it when you have a flat tire!!

chilledbenz

The update by the original poster has taken me back a bit. Waiting a month for a repair part (even with it being "claimed" as a part not critical) is way too long to be waiting. Its time to call MB and find out if you can get reimbursed for the lack of use of your car. A call to MB will get your dealership on the ball if nothing else.

azngr00ve

Since the check engine light is still on, I'm going to ask the dealer about expediting the delivery and installation of the purge valve. Though they said that my vehicle is drivable, I'm still weary about a LEGITIMATE error coming up and being masked by the purge valve check engine light.

I'll see what they say about resolving this sooner, otherwise, the discussion will move into compensation and a long term loaner.

For those who are upset about the title of this thread, it is named after what my service advisor initially diagnosed the problem as, prior to narrowing down the slew of issues to the faulty purge valve.

sosh

Looks to me like your dealer is a bit lax. In the past 12 years with 7 new MB's I have never had to wait more than overnight for any part. Perhaps they do not wish to absorb the cost of Fed Ex or such. This is not a new engine so the part must be somewhere in the US. I do not buy that story nor the initial engine faiure diagnosis that was given to you. By the way most of the CEL malfuctions are emmissions related so you can certainly drive your car it it runs OK which you say it does. Can't blame them for not providing a free loaner or compensation. Think you are over reacting in this regard.

azngr00ve

all fixed now. here's a snap shot of the service summary

• star diagnosis system (SDS), connect & disconnect
• recode signal aquisition and actuation control unit (SAM)
• perform service campaign#2009110003, connect battery charging, use sds recode front SAM
• purge valve intermmiter fail. ran short test got code 1077, purge flow of the evap system too high, pinpoint test purge valve found intermmiter fail.

hopefully, everything is fixed now.

sosh

Do not see anything on this regarding replacement of the purge valve??