E-Class (W211) 2003-2009

2009 W211 E320 BlueTec

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Old Feb 15, 2023 | 09:30 AM
  #1  
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2020 E350 4Matic & 2012 E350 Convertible
2009 W211 E320 BlueTec

My check engine is on. Because of the Timing Chain, Tensioners, Rails, etc. issues.
They need to be changed. Although, I am not 100% sure exactly what is worn. But I think, since the front is "open," replace it all.
The prices are reasonable. I could purchase the entire Bilstein kit for a very reasonable price.
As you all know, there are a bunch of places to purchase the parts. (Only Mercedes or Bilstein, I think...)
But finding someone to do the work, is a different story. I live in Northern NJ. Does anyone know someone that has done this work before?
I have other cars, so I am NOT in a rush. In fact, I just purchased the car, all full knowing it needed the timing chain repaired.
Certainly appreciate your help in this matter!
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Old Feb 15, 2023 | 10:16 AM
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What codes do you have?
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Old Feb 15, 2023 | 10:20 AM
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Ahh, yes codes would be great to have! But I currently do not have any codes, because I have not brought the car to my friends auto repair center yet.
He can't do the work on the car, but he can give me the codes. I might go tomorrow...
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Old Feb 15, 2023 | 10:31 AM
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Originally Posted by Teambas
Ahh, yes codes would be great to have! But I currently do not have any codes, because I have not brought the car to my friends auto repair center yet.
He can't do the work on the car, but he can give me the codes. I might go tomorrow...
Before committing to major work I would suggest getting an MB specific scan tool of your own that can pull codes from every module in the car. It's going to make ownership a lot cheaper and easier. Icarsoft MB V2.0 is a good example but there are others.They are all around $150 or less on Amazon. Cheaper than one diagnostic visit at most shops.

I'm not trying to deny that your engine needs a new timing chain. Timing chain stretch is a known problem on these engines. But having your own scan tool in hand will help you narrow down problems a lot faster.

Here's a video on doing the timing chain on this engine with minimal disassemble.
​​​​​

Last edited by tjts1; Feb 15, 2023 at 10:35 AM.
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Old Feb 15, 2023 | 12:10 PM
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Tjts1
I understand. A diagnostic scanner would be good to have, but my feeling is that why not do the entire kit? A little more labor, but the engine will already be opened. Plus, the timing chain vs. the kit only saves about $100. I think it makes sense to do the whole ball of wax.
Joe
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Old Feb 15, 2023 | 12:50 PM
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Originally Posted by Teambas
Tjts1
I understand. A diagnostic scanner would be good to have, but my feeling is that why not do the entire kit? A little more labor, but the engine will already be opened. Plus, the timing chain vs. the kit only saves about $100. I think it makes sense to do the whole ball of wax.
Joe
The only way to remove to remove the chain guide rails is to remove the front timing cover. The only way to remove the front timing cover is to remove the lower oil pan. You also have to remove the whole front bumper, radiator support coolant package etc. It adds up to a lot of labor. I would go into the engine through the oil fill cap with an endoscope camera to inspect the timing chain guides first. I rebuilt a 220,000 mi OM642 and the timing chain guides still looked good as new.

Parts are cheap, labor is going to add up. If this was a DIY project I would say go for it. Just make sure you get a solid labor cost estimate before you plunge into it.
  1. ​​

Last edited by tjts1; Feb 15, 2023 at 12:58 PM.
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Old Feb 15, 2023 | 12:55 PM
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WOW! Very labor intensive. My 2009 E320 only has 116k miles. Not terribly high. But I need someone to tell me what I need.
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Old Feb 15, 2023 | 01:01 PM
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Originally Posted by Teambas
WOW! Very labor intensive. My 2009 E320 only has 116k miles. Not terribly high. But I need someone to tell me what I need.
I stand corrected, I'm not 100% sure the engine will have to come out in your situation. I worked on a sprinter engine. Same engine different oil pan. Anyway here's the bolts that screw the oil pan to the bottom of the front timing cover looking from underneath. The way the repair manual has it written you put the front cover on first then the upper oil pan. There's just no way to remove the upper oil pan with the engine still in the car. Hence my earlier comment.

Last edited by tjts1; Feb 15, 2023 at 01:03 PM.
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Old Feb 15, 2023 | 01:04 PM
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I guess my question is: How does anyone know what part(s) need to be replaced? Timing Chain only, or Guides and/ Tensioners???
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Old Feb 15, 2023 | 01:09 PM
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Originally Posted by Teambas
I guess my question is: How does anyone know what part(s) need to be replaced? Timing Chain only, or Guides and/ Tensioners???
Go in through the oil cap with a boro scope camera to inspect the plastic guide rails. At that mileage I suspect your guide rails are fine. It all depends on how often the previous owner changed the oil..
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Old Feb 16, 2023 | 06:01 PM
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My friend, doesn't have a bore scope. But he pulled the Codes from the car.
P2045 / P2255 These he erased. But he aid they might return
P2623 / P2624 These are Hard Codes. Not erasable.
Not sure what this tells you, if anything. But I promised I would get the Codes.
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Old Feb 16, 2023 | 10:45 PM
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None of these codes show any issue with your timing chain.
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Old Feb 16, 2023 | 10:49 PM
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That’s what I thought. But since the “Check Engine” is on, is it safe to assume that the timing chain is Ok, & whatever the codes say is wrong is the problem?
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Old Feb 17, 2023 | 01:25 AM
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Originally Posted by Teambas
That’s what I thought. But since the “Check Engine” is on, is it safe to assume that the timing chain is Ok, & whatever the codes say is wrong is the problem?
If the chain was stretched you would hear the timing chain rattle especially right after cold start. Eventually you'll also get a crank to cam correlation error code.
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Old Feb 17, 2023 | 07:36 AM
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I definitely hear a "clanking" upon a cold start up. But the noise goes away in 5 seconds.
But I just want to fix this once & for all. Do you know anyone that could service my car in Northern NJ.
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Old Feb 18, 2023 | 08:05 PM
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Yes

Originally Posted by Teambas
My check engine is on. Because of the Timing Chain, Tensioners, Rails, etc. issues.
They need to be changed. Although, I am not 100% sure exactly what is worn. But I think, since the front is "open," replace it all.
The prices are reasonable. I could purchase the entire Bilstein kit for a very reasonable price.
As you all know, there are a bunch of places to purchase the parts. (Only Mercedes or Bilstein, I think...)
But finding someone to do the work, is a different story. I live in Northern NJ. Does anyone know someone that has done this work before?
I have other cars, so I am NOT in a rush. In fact, I just purchased the car, all full knowing it needed the timing chain repaired.
Certainly appreciate your help in this matter!
German Automotive in Shrewsbury NJ




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Old Feb 18, 2023 | 08:47 PM
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As it turns out I believe I only need the Timing Chain Tensioner. So I will just replace that for now, & see what happens. Plus, Shrewsbury is far from Towaco, where I live.
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