Another first. This time it’s a camshaft spring. Previously it was a twisted camshaft.

Please describe your symptoms and post a copy of the service receipt so we can see the details.

 

My CEL went out after getting back from dealer so I decided not to fix for now

 

My “first” statement was kind of sarcastic, but directed at dealers not members. Some of the diagnoses people are being given don’t make much sense.

The CEL may come back on. Mine was on and off for a while. If it comes back, repost and we’ll try to help.

 

As a point of reference, I'm just about to tackle the camshaft adjusters & timing chain replacement for the P034062 code. Here are the parts I have purchased for the task (MB parts):



My labor is free but the total cost might increase after I add in the swear jar contents.

 

So my CEL came back on for third time, last time was about 20 days back.

My Question is for anyone who has replaced camshaft adjusters and timing chain, did the issue cause any other problems after repairs were done?

 

dealership replaced my camshaft adjusters and the chain tensioner BUT NOT the timing chain (February/March). The original problems of long crank and rattle right after start were solved.

Shortly after (April) that I had an oil leak from the turbo line which the dealership said had nothing to do with the repairs they performed the previous month on the adjusters. I paid out of pocket and fixed the turbo line oil leak.
However, now (May), I have a leak from the lower timing cover. Again, the dealership said that it had nothing to do with the two repairs they performed previously and quoted me $3,700 CAD to fix it - they said its 17hrs of labor and its an engine out job.
1. I find it hard to believe that my oil leak woes has nothing to do with the original adjuster replacement work they did; never had any issues with the car and the oil leaks only and only started after the camshaft adjuster repairs.

2. Why did they say that a timing cover leak repair is an engine out job? Its the exact same cover they would have to remove to get to replace the timing chain - which is NOT an engine out job - are they screwing me over?

 

Thanks. Sorry to hear your troubles.

but now i am thinking i will not fix the camshaft issue

 

Is there anyone who has not replaced the camshaft adjusters and timing chain despite the CEL coming on multiple times and not have any issues

 

Can we use the OBD two scanner to read the check engine light codes of the C250 2012?

 

Most scanners and code readers can with the correct updates. True scanners give more info than simple code readers.

 

Does anyone know if the new camshaft adjusters / phasers that get installed are a revised design compared to the original design? When I look up the camshaft adjusters for my wife's '14 C250 on one of the online parts sites (mboemparts.com), it shows 271-050-14-00-80, which it says is a "Remanufactured Camshaft Adjuster." That would lead me to believe that NO, there is not a revised design, it's just a remanufactured original adjuster. However, the page for that part shows it replaces 271-050-14-00 and 271-050-33-47, so maybe those are earlier versions of the adjuster? Or maybe the remanufacturing process incorporates some change? Just seems strange that MB would bother to do an extended warranty if they were just going to install the same part again.

So I'm curious what part number is shown on the invoice of someone who has had the repair done in the past couple years.

 

I bought my parts from mercedespartscenter.com (MB official dealer in Kansas) and both show the remanufactured (-80) designation for the intake and exhaust camshaft adjuster part numbers. There was a core charge for each which leads me to believe these are indeed being rebuilt. The same was true for the starter motor that I recently replaced (outer box showed rebuilt in Latvia).

The facelift C250 uses the M271 EVO engine and these were built up to 2015. I don't know if this engine is also used in other models but, if not, then it is probably unlikely that MB would redesign the camshaft adjusters. They may well incorporate their "experience" with the M271 camshaft adjusters into later designs.

 

Can i get this warranty if i dont live in USA ,if i have less than 120000 miles but i bought Car from USA Copart?

 

I don't see how that would work. The extended warranty coverage is provided by MB-USA, who (presumably) would have no connection to the dealer performing service in whatever country your car is now in.

Assuming you're in Canada, do you live somewhere close enough that you could get the car to a US dealer to be serviced? It might not be terribly convenient to have to do that, but if it saves you thousands of dollars, that's probably worth the inconvenience.

 

No I live thousands miles away from USA, do you have information about aftermarket cam adjusters? which is worth to install?
And after many years what is reason of a problem and how it can be avoided?
approximately how many percentage of C250 needs replace cam adjusters before 130K miles? 50% or more? )

 

This is what I was told by an independent shop when my cam adjusters were replaced:
There is nothing that can be done to prevent cam adjuster failure. There is no warning that it will happen. Probably around 10% of M271 EVO engines will need the at least one cam adjuster changed. Change both adjusters and the timing chain if a failure occurs. Every aftermarket adjuster they had tried was either defective from the start or failed soon after replacement. Rebuilt adjusters are available from Mercedes and use a harder lock pin which should last much longer but there is no guarantee.

 

I agree to you that we should replace both adjusters if problem is accure, but MB and other car manufacturers himself don't produce any parts they order to part suppliers and then packing to MB box, there should be some good suppliers (not chinese)
Because when i check some good German brands making this adjusters such a Vaico or Kolbenschmidt.

And another question when it fails you only need to replace chain and adjusters or other parts too Chain Tightener , tensioner and etc?

 

Catchme26-
Your comments about manufacturing parts are valid. I just could not find where Mercedes sourced the adjusters. I have used OEM suppliers like Lemfoerder where the replacement part was actually better than the original. Since I wasn’t in a position to do my own work this time, I went with one of the two independents I trust.

I think I the chain tensioner needs to be replaced whenever the chain is removed. There are posts about resetting it, but it looks difficult. Some people are replacing everything: both adjusters, timing chain, balance shaft chain, tensioner, chain guides, crankshaft sprocket, and cam position sensors. That makes the repair more time consuming but then everything related to timing is new.

 

What they say about the extended warranty after the 120k mark ?

 

I had my cam adjusters replaced at 57k miles. I am at 118k now and am having the same issue. Took it to the dealer and they verified it needs the cam adjusters replaced again. I was told I am under the miles but that it ran out in January of this year. I called mbusa customer service and they responded with saying they can't help me since I am over 75k miles. It pisses me off that they extended a warranty for a part they know is bad and won't help me out at all. They told me it is now a little over $4k to repair. Bull ****. Definitely going to be the last Mercedes I own.

 

​​​​​​I'm sorry to hear that.. I'm barely on 125k & they told me the warranty won't cover it so I found the adjusters online & took it to a mechanic came out to around $1800 in total.

 

I somehow convinced a dealership to give me $6k for the car on trade in. I even told them what was wrong with it. It's their problem now!

 

Do you really expect MB to extend the warranty they've already extended?

 

I see the extended warranty as an admission on their part that they produced a faulty product. I would expect them to work with a customer who is only 3 months out of warranty and still under the miles. I don't expect them to pay for all of it, but I would expect them to be reasonable.

 

Some owners have reported that MB will extend the warranty out of goodwill to those who are just out of the warranty zone

one would expect that when they do extend a warranty for a faulty part that they would replace the faulty part with an improved non-faulty future proof part and not the very exact same part whose failure prompted said extended warranty - moronic all round