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

Coolant leak at firewall rear of engine

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 02-03-2022, 05:12 AM
  #1  
Newbie
Thread Starter
 
Ken Hooper's Avatar
 
Join Date: Jul 2019
Location: Australia
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
2013 W166 GL350 Bluetec, 2009 W212 E250 CDI Avantgarde
Coolant leak at firewall rear of engine



Hi everyone
My 2009 W212 E250CDI has a coolant leak from the plastic elbow that goes thru the false firewall at the rear of the engine. Can anyone help with a part name or number, and a procedure to remove and replace?
thanks in advance.
cheers

Last edited by Ken Hooper; 02-03-2022 at 05:15 AM. Reason: Didn’t put in text
Old 02-03-2022, 09:37 AM
  #2  
Out Of Control!!
 
konigstiger's Avatar
 
Join Date: Jul 2003
Location: North Scottsdale, AZ
Posts: 15,903
Received 4,435 Likes on 3,152 Posts
'71 Pinto
Does this resemble part in question? Pulled hose part # a2048305996 (180 in diagram) and EPC shows it’s connected to 150 picture shown. If so, need VIN to supply correct part #.




The following 2 users liked this post by konigstiger:
badbenz94 (02-03-2022), pierrejoliat (02-03-2022)
Old 04-21-2024, 01:21 PM
  #3  
Newbie
 
fellyman's Avatar
 
Join Date: Apr 2024
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
e250
Originally Posted by Ken Hooper;[url=tel:8505223
8505223[/url]]

Hi everyone
My 2009 W212 E250CDI has a coolant leak from the plastic elbow that goes thru the false firewall at the rear of the engine. Can anyone help with a part name or number, and a procedure to remove and replace?
thanks in advance.
cheers
hi Ken . Did you find a part number for the elbow joint that was leaking as my merc is doing the same thing . Looks easy enough to change , looks like there is a pull clip up against the fire wall to release the elbow joint then remove pipe from that elbow then replace in reverse by the look of it, but yeah just wondering if you found a part number. Many thanks in advance . Marc
Old 04-22-2024, 11:26 AM
  #4  
MBWorld Fanatic!
 
S-Prihadi's Avatar
 
Join Date: May 2018
Location: Jakarta-Indonesia
Posts: 4,396
Received 4,449 Likes on 2,605 Posts
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Depending on the engine model, that HVAC heater hose in the photo is not the complete set.

There are 3 to 4 items , depending on engine model.
Try here, use your car VIN : https://nemigaparts.com/cat_spares/

The arrangement as follows :
01. Plastic pipe A from rear of engine. Pipe A.
02. Plastic pipe B. Some engine only have Pipe A and not B.
03. That hose in the photo, hose 1 of 2. From plastic pipe to firewall
04. The hose 2 of 2 which will receive hose 1.>>> This is firewall to HVAC heater core.

If you want to be safe, change all 3 or 4 of them.


The following users liked this post:
CaliBenzDriver (04-22-2024)

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


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Coolant leak at firewall rear of engine



All times are GMT -4. The time now is 05:33 PM.