Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > C-Class (W203)
Transmission leak - parts diagram >

Transmission leak - parts diagram

Notices
C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Transmission leak - parts diagram

 
Old 08-09-2011, 01:50 PM
  #26  
MBWorld Fanatic!
 
Join Date: Nov 2001
Location: Huntington Beach, Ca.
Posts: 5,434
Received 60 Likes on 57 Posts
'17 Jaguar XF
Originally Posted by ericgoh View Post
..Only a few drops in the underside cover, but there is evidence that more oil is being blown further towards the back of the car. So, I assume that the leak is happening mostly during driving while hot and the majority ends picked up by passing air and sprayed around the underside of the car.
Sounds like my car too I have 173K miles and yours? I clean it off during the oil change and I get a thin film on the bottom of the bell housing, wiring to the O sensors, and trans pan but no puddles on the under cover and never to the floor. It's the main seal on mine. I use(?)/weep about 1 qt. every 10K miles so I've learned to live with it.
mleskovar is offline  
Old 08-09-2011, 01:58 PM
  #27  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Austin, Texas
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
2003 Mercedes C240, 2009 Audi Q5
Only 52k on our 2003. I bet it is the main seal as well.

Has your leak remained fairly consistent or has the flow increased over time?
ericgoh is offline  
Old 08-09-2011, 02:37 PM
  #28  
MBWorld Fanatic!
 
Join Date: Nov 2001
Location: Huntington Beach, Ca.
Posts: 5,434
Received 60 Likes on 57 Posts
'17 Jaguar XF
Originally Posted by ericgoh View Post
....Has your leak remained fairly consistent or has the flow increased over time?
It seems to have started at about 100K and remained fairly consistent. It's so little that I've even considered some kind of device to contain it (but not stop it) but it's so easy to clean off that I don't bother. It still annoys me though as I don't like any fluid leaks from my cars.
mleskovar is offline  
Old 10-11-2016, 03:47 AM
  #29  
MBWorld Fanatic!
 
slammer111's Avatar
 
Join Date: Dec 2003
Location: Vancouver, BC, Canada
Posts: 1,827
Likes: 0
Received 22 Likes on 22 Posts
2003 C230K Coupe Orion Blue
Anyone else have this problem, or any updates?
slammer111 is online now  
Old 12-17-2016, 03:07 PM
  #30  
Newbie
 
Join Date: Dec 2016
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
2012 Mercedes ML350, 2002 Mercedes C240
Transmission leak or bongo bolt?

Hi guys!
Trying to find source of this leak on my old 02' C240. Friend thought it was coming from the valve cover (1st pic) but I'm just not sure as it's barely showing. Or if it's (2nd pic) coming from the seal and/or just the bongo bolt. Any help would be most appreciated!
-Andrea


Me looking up from ground at the bottom of the valve cover. Seems like too much fluid on transmission area to be coming from here.



Not sure if leak from valve cover up top dripping down to here, the seal, or just the bongo bolt leaking
AndreaMCN is offline  
Old 12-17-2016, 03:59 PM
  #31  
MBWorld Fanatic!
 
Join Date: Sep 2010
Location: Raleigh, NC
Posts: 1,401
Received 1 Like on 1 Post
2005 C230K, 2006 C230
My money's on the banjo or something in that area.
ncmudbug is offline  
Old 03-16-2018, 03:11 PM
  #32  
Junior Member
 
Join Date: Dec 2017
Location: Irving Texas
Posts: 69
Received 0 Likes on 0 Posts
2003 Benz C240
Originally Posted by mleskovar View Post
I assume you've ruled out the "tranmission bushing" aka 'plug' that carries the wiring inside the trans? You could have a rear main leak/weep. How much does it leak? Do you wipe off the oil and check for buildup? Do you add oil between changes? Does the leak ever overflow from the underside cover and on to the floor after you clean it off?
Originally Posted by ericgoh View Post
Yes, the transmission plug was replaced 4 years ago or so and it looks dry. I'm pretty sure this is engine oil since it doesn't have the ATF color. It's not a ton of leakage since the oil doesn't need topping off.

Only a few drops in the underside cover, but there is evidence that more oil is being blown further towards the back of the car. So, I assume that the leak is happening mostly during driving while hot and the majority ends picked up by passing air and sprayed around the underside of the car.
Originally Posted by slammer111 View Post
Anyone else have this problem, or any updates?

Hey guys, same questions....Any updates? What's the current situation looking like?
Jay11 is offline  
Old 05-21-2018, 08:59 PM
  #33  
Junior Member
 
Join Date: Nov 2012
Location: SoCal
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
2014 GLK 350
Hello All,
I have a new to me 2001 C240. I went change the trans fluid today and when I dropped the pan I found: A wet trans pan, some oily fluid on the plastic panel(NOT REDDISH) and some oil on various areas at the rear of the engine(Nothing like the amount I used to find there on my C230 Coupe). I read the threads above and I'm not overly concerned and will monitor the oil and ATF use/loss. However I am confounded by the apparent lack of a Trans Drain Plug. Is the topside extraction method the only course I have available? I'm hoping to do the simple drain/filter change/gasket replace on this transmission? I was under the impression this "earlier" 722.6 HAD a drain plug, Please Advise.

Thanks in Advance,
PACIFICMAN
PACIFICMAN is offline  
Old 05-22-2018, 11:15 AM
  #34  
Junior Member
 
Join Date: Dec 2017
Location: Irving Texas
Posts: 69
Received 0 Likes on 0 Posts
2003 Benz C240
ATF oil pan should have a drain plug, torque converter does not. This was eliminated on cars bet. 99/00 or thereabout to a few years later after that. You can use the banjo disconnect method to drain it all, or drain/fill 4 times (with every oil change, after x miles...whatever, you decide) and you will end up with new atf or if you are lucky your car has connector nuts to radiator (like w211s) that you can loosen the return line-i have high-pressure crimp connectors in my 03 c240, no TC drain but I have atf pan drain. So I used the banjo method.
Jay11 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: Transmission leak - parts diagram


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: