Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > E-Class (W212)
E350 tensioner & pulley R&R Frequency >

E350 tensioner & pulley R&R Frequency

Notices
E-Class (W212) 2010 - 2016: E 350, E 550

E350 tensioner & pulley R&R Frequency

 
Old 02-03-2019, 04:53 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Dec 2018
Location: NC
Posts: 20
Received 4 Likes on 4 Posts
2011 E350 4Matic Wagon
E350 tensioner & pulley R&R Frequency

Local dealer replaced airbag under recall last week and additionally presented me with a 4 page report of all my vehicle's ailments and recommended repairs. One of the rec's was serpentine belt, tensioner and pulley replacement. Vehicle has 65k miles on it. I asked my SA if tensioners typically go bad by this time, I did not get a straight answer. I'll do this maintenance procedure myself as the belt is getting worn. I cannot hear any specific squeaks that would make me think the tensioner or pulleys are worn. My question is do I buy the kit with the belt/pulleys/tensioner and just replace them all at once or do the tensioner and pulley typically give much longer service?
Bdevil82 is offline  
Old 02-03-2019, 08:44 PM
  #2  
Member
 
Join Date: Jan 2019
Posts: 116
Likes: 0
Received 24 Likes on 23 Posts
2011 E350
Watch some UYT videos.....University of You Tube tensioner, idler pulley and belt don’t appear that difficult. If you have occasion to remove water pump and or thermostat the belt has to come off anyway so about as close to perfect timing as you can get. Check out FCPEuro. They have kits with tensioner, idler pulley and belt all in one. Even if you don’t know how to do take to independent shop.

Quick summary of my Audi dealer visit to think about. Took my 2010 A6 for the same Takata airbag recall. Same deal 10 page report with photos and of course a $8000 estimate. He said $8000 of work. I replied no probably about $2000-3000 worthy work that you are charging $8000 for. They didn’t like that pushback. I took my airbag recall and $800 for a new Keyfob,MMI and Nav update and left. Plus they gave me a service loaner for about two weeks so not a total loss.

Especially dealers shop around I have no problem shopping around to...”Keep them honest”. In fact I will tell first place that I am shopping around to keep them honest.
2011E350 is offline  
Old 02-03-2019, 08:47 PM
  #3  
Member
 
Join Date: Jan 2019
Posts: 116
Likes: 0
Received 24 Likes on 23 Posts
2011 E350
As for the 65K. I would proudly belt should be replaced but tensioner and idler pulley should be fine for a little longer. I bet the kit from FCPeuro.com is probably cheaper than even one of the components at the dealer.
2011E350 is offline  
The following users liked this post:
Bdevil82 (02-04-2019)
Old 02-03-2019, 08:49 PM
  #4  
Member
 
Join Date: Jan 2019
Posts: 116
Likes: 0
Received 24 Likes on 23 Posts
2011 E350
The fact that the SA is being shady with the answers should automatically be a red flag!!!

Marinate on that hat for a bit!
2011E350 is offline  
Old 02-03-2019, 10:10 PM
  #5  
Mud
Super Member
 
Mud's Avatar
 
Join Date: Oct 2014
Posts: 939
Received 198 Likes on 156 Posts
2011 E-350 4Matic Sport
The belt change by itself is about a 15 min job on the E350.
I would wait till there was more of an actual problem with the pulley/tensioner before replacing them, but as mentioned, the entire kit installed as diy is probably less than a dealer belt replacement alone.
Mud is offline  
The following users liked this post:
Bdevil82 (02-04-2019)
Old 02-04-2019, 12:41 PM
  #6  
Junior Member
Thread Starter
 
Join Date: Dec 2018
Location: NC
Posts: 20
Received 4 Likes on 4 Posts
2011 E350 4Matic Wagon
Thanks everyone for your input. Other than spinning them, what are some of the diagnosis procedures for identifying a bad pulley and/or tensioner bearings?
Bdevil82 is offline  
Old 02-04-2019, 12:59 PM
  #7  
MBWorld Fanatic!
 
cetialpha5's Avatar
 
Join Date: Feb 2014
Location: MA
Posts: 3,472
Received 365 Likes on 327 Posts
2008 E350 4Matic, 2011 E350 4matic
You have the M272 engine. It's very common for those items to go. Mine went in the 60k range on my 2008. On the 2011, at a little over 90k, it started making a whining noise. You could wait til it starts to make noise. FCPeuro has a lifetime warranty on the parts so if they go again, just get another set. When I replaced mine, I could tell the pulleys had a little bit of play in them and the tensioner was worn. It's a pretty easy and basic repair. If you're doing it, look into the thermostat too, those are also known to go and you have to remove a pulley to replace the thermostat.
cetialpha5 is offline  
Old 02-28-2019, 04:50 PM
  #8  
Newbie
 
DJretpurp's Avatar
 
Join Date: Feb 2019
Location: TN
Posts: 14
Received 3 Likes on 3 Posts
2010 E350, 2015 Boxster S, 2019 E53 Sedan
I had this happen last October (2018). The bearing froze, cooked the belt, the belt slapped around and took out oil cooler, the belt tightener, the pulley on crankshaft with harmonic balancer and the vibration damper. The car had 160,000 miles. I only wish I could have chosen to proactively change out the tensioner pulley and bearing.
DJretpurp is offline  
Old 02-28-2019, 05:48 PM
  #9  
MBWorld Fanatic!
 
belarus27's Avatar
 
Join Date: Jun 2013
Location: Sacramento , CA
Posts: 1,802
Received 154 Likes on 145 Posts
2010 e550 p2
Originally Posted by DJretpurp View Post
I had this happen last October (2018). The bearing froze, cooked the belt, the belt slapped around and took out oil cooler, the belt tightener, the pulley on crankshaft with harmonic balancer and the vibration damper. The car had 160,000 miles. I only wish I could have chosen to proactively change out the tensioner pulley and bearing.
Im guessing you didnt have any noises or anything obvious prior that ??
belarus27 is offline  
Old 02-28-2019, 06:43 PM
  #10  
Member
 
S550e's Avatar
 
Join Date: Jan 2017
Location: Orange County, CA
Posts: 139
Received 24 Likes on 23 Posts
W222 S550e, W212 E350
I also got a report back saying I should replace mine. My indie said it's fine and doesn't make any weird noises. 52k miles

https://mbworld.org/forums/e-class-w...ip-prices.html

Check this out^ I just posted the same thing not too long ago. Some good responses on there.
S550e is offline  
Old 03-01-2019, 05:59 AM
  #11  
Senior Member
 
Join Date: Apr 2017
Location: Mountaintop, PA
Posts: 288
Received 30 Likes on 29 Posts
'76 Triumph TR6, '14 W212 Sport, '09 Audi S5 4.2
Just did mine two weeks ago at about 80K. It was squeaking a little bit when cold. At about $100 from Rockauto and maybe 15 minutes of my time (plus another 20 chasing down another unrelated noise) it's silly not to do this. Didn't realize FCP parts had a lifetime warranty though, probably should have paid a little bit more for that option.
Darel is offline  
Old 03-01-2019, 07:26 AM
  #12  
Senior Member
 
mercy-me's Avatar
 
Join Date: Apr 2012
Location: Just north of Detroit,Michigan
Posts: 415
Received 74 Likes on 60 Posts
2003 SL500, 2012 E350 4Matic P2
Originally Posted by DJretpurp View Post
I had this happen last October (2018). The bearing froze, cooked the belt, the belt slapped around and took out oil cooler, the belt tightener, the pulley on crankshaft with harmonic balancer and the vibration damper. The car had 160,000 miles. I only wish I could have chosen to proactively change out the tensioner pulley and bearing.
I had a belt tensioner freeze up on my W220 M113 at 105k miles. I had no warning. The belt was shredded and I lost all belt driver components. No power steering and had to drive the 4 miles to my house with only battery power and car was overheated because no water pump. I had no warning of impending failure. I was lucky to be that close to home and able to get there on my own. I think the belt tensioner and belt should have an assigned maintenance change out schedule the same as spark plugs etc. I will be changing the tensioner and belt on my 102K W212 if I decide to keep it for another year just for peace of mind. (my 2˘)

Good luck,

Bob
mercy-me is offline  
Old 03-01-2019, 11:21 AM
  #13  
Newbie
 
DJretpurp's Avatar
 
Join Date: Feb 2019
Location: TN
Posts: 14
Received 3 Likes on 3 Posts
2010 E350, 2015 Boxster S, 2019 E53 Sedan
We did not. It is my wife's daily driver, but she is also the reason the damage to the harmonic balancer and vibration damper were discovered about a week after repairs were made following the failure of the idler tensioner bearing. She heard it making a slight sound that she was not used to. I don't believe the bearing presented anything detectable before it failed.
DJretpurp is offline  
 

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: E350 tensioner & pulley R&R Frequency


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: