c230 engine harness oil - issue
Newbie
Joined: May 2010
Posts: 1
Likes: 1
C230K 2003
I have mine in the dealership right now on this campaign and the service manager called me today to let me know that Mercedes will be replacing my O2 Sensor (both), Cam Shaft Actuator with front/rear seals, ECU/ME (This got oil in it aparantly), and the entire engine harness. MB is covering the cost 100%, there was no argument, I just explained what happened (car stalls and throws a bunch of codes, including a the code for the Cam Shaft Actuator), got my car to the dealership and had it looked at. Got it there yesterday, they say it will be ready by Friday.... Needless to say i'm happy after needing to replace oil-filled O2 sensors for the last year.
And yes, I realize that I should have taken it in before things really got bad, but I didn't know why the O2 sensors kept failing.
And yes, I realize that I should have taken it in before things really got bad, but I didn't know why the O2 sensors kept failing.
Newbie
Joined: Dec 2020
Posts: 14
Likes: 5
From: Henderson NV
05 c230 kompressor
Is there any video's on replacing the wiring harness to the ecm?
So my check engine light turns on, I take it to get a oil change since it needed it.
The guy tells me there is oil in the hardness and I was able to find a pic from other threads " http://img78.imageshack.us/img78/9461/w203ln5.jpg " and right where the orange circle is he removed those connectors and there was some oil. And the error being put out was o2 sensor "PO136 / PO141". He quoted 3.000 for fixing this.
I replaced cam magnets & pigtails but wiring harness will not clean up.I have cleaned it multiple times and it gets the cel back. Thanks
He claims the following need to be replaced
Engine Harness
Cam shaft adjusters
M.E control unit
o2 sensors down stream
What a mess, i see this is a common thing in these cars after 50.000K mines just turned 54.000
The guy tells me there is oil in the hardness and I was able to find a pic from other threads " http://img78.imageshack.us/img78/9461/w203ln5.jpg " and right where the orange circle is he removed those connectors and there was some oil. And the error being put out was o2 sensor "PO136 / PO141". He quoted 3.000 for fixing this.
I replaced cam magnets & pigtails but wiring harness will not clean up.I have cleaned it multiple times and it gets the cel back. Thanks
He claims the following need to be replaced
Engine Harness
Cam shaft adjusters
M.E control unit
o2 sensors down stream
What a mess, i see this is a common thing in these cars after 50.000K mines just turned 54.000
Junior Member
Joined: Apr 2020
Posts: 18
Likes: 3
From: Huntsvegas, AL
03 c230 Kompressor sport coupe
Dealing with this issue thru MB Canada as we speak... So far it has been frustrating and I am in the "never want to buy a benz again" mentality... Never had such issues dealing with BMW.... apparently a 7 year old Mercedes this is to be expected...funny my BMW was 15 years old with almost 300K Km and was trouble free.
A service campaign was issued in the US... but not recognized in other markets..
FILE:
SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER
PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER
Campaign No. 2009100001, December 2009
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT:
Models 170/203, Model Years 2001 - 2004 / 2002 - 2004
Replace the Camshaft Adjustment Solenoid(s) and Install Adapter Harness(es)
Revision Date Purposea 12/15/09 Inclusion of reimbursement information- 12/04/09 Initial issue
This Service Campaign has been initiated because Daimler AG (DAG), the manufacturer of Mercedes-Benz vehicles, has determined that due to the settling properties of the seal of the camshaft adjustment solenoid specification, oil may enter the engine wiring harness (es) through the electrical connection of the camshaft adjustment solenoid from capillary action. Dealers will replace the camshaft adjustment solenoid(s) and install an additional adapter connector harness (es) at the next workshop visit.
Prior to performing this Service Campaign:
^Please check VMI to determine if the vehicle is involved in the Campaign and if it has been previously repaired.
^Please review the entire Service Campaign bulletin and follow the repair procedure exactly as described.
Please note that Recall and Service Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.
Approximately 66,113 vehicles are affected.
To date mercedes has offered up to pay for 50% of the parts ($2000) while I'm on the hook for 50% parts plus labor ($4300).... It's going in for a second opinion to another dealer... I figure if the ECU, MAF sensor, O2 sensors X2, wiring harness X2 (one at $578) etc.etc.etc... were all shot the car would not run...and it does.
A service campaign was issued in the US... but not recognized in other markets..
FILE:
SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER
PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER
Campaign No. 2009100001, December 2009
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT:
Models 170/203, Model Years 2001 - 2004 / 2002 - 2004
Replace the Camshaft Adjustment Solenoid(s) and Install Adapter Harness(es)
Revision Date Purposea 12/15/09 Inclusion of reimbursement information- 12/04/09 Initial issue
This Service Campaign has been initiated because Daimler AG (DAG), the manufacturer of Mercedes-Benz vehicles, has determined that due to the settling properties of the seal of the camshaft adjustment solenoid specification, oil may enter the engine wiring harness (es) through the electrical connection of the camshaft adjustment solenoid from capillary action. Dealers will replace the camshaft adjustment solenoid(s) and install an additional adapter connector harness (es) at the next workshop visit.
Prior to performing this Service Campaign:
^Please check VMI to determine if the vehicle is involved in the Campaign and if it has been previously repaired.
^Please review the entire Service Campaign bulletin and follow the repair procedure exactly as described.
Please note that Recall and Service Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.
Approximately 66,113 vehicles are affected.
To date mercedes has offered up to pay for 50% of the parts ($2000) while I'm on the hook for 50% parts plus labor ($4300).... It's going in for a second opinion to another dealer... I figure if the ECU, MAF sensor, O2 sensors X2, wiring harness X2 (one at $578) etc.etc.etc... were all shot the car would not run...and it does.
MBWorld Fanatic!
Joined: Jun 2002
Posts: 7,268
Likes: 172
From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
LOL yeah, and their plastic water pumps.
Actually I had a 1981 320i and it actually was pretty trouble free.I
I sold when I bought my 02 C Coupe.
It had some electrical issues with the brake lights and rear running lights
which the new owner had fixed for a couple hundred at a mechanic.
I bought with 75K on it and drove it about 75K miles, I put brakes and a new brake master cylinder
in, plus normal maint. Can't remember if I did the clutch cylinders and I was going to do the brakes cylinders
just for preventative measure but sold it.
I knew a BMW mechanic who said the only BMW he would own was probably this model, but in fact did not
own a BMW. I ran into a lot of people who had 350K + miles on them, and never had the head off!
I would've kept it but I already had 2 cars and didn't need a 3rd.
Actually I had a 1981 320i and it actually was pretty trouble free.I
I sold when I bought my 02 C Coupe.
It had some electrical issues with the brake lights and rear running lights
which the new owner had fixed for a couple hundred at a mechanic.
I bought with 75K on it and drove it about 75K miles, I put brakes and a new brake master cylinder
in, plus normal maint. Can't remember if I did the clutch cylinders and I was going to do the brakes cylinders
just for preventative measure but sold it.
I knew a BMW mechanic who said the only BMW he would own was probably this model, but in fact did not
own a BMW. I ran into a lot of people who had 350K + miles on them, and never had the head off!
I would've kept it but I already had 2 cars and didn't need a 3rd.
Last edited by C230 Sport Coup; Aug 12, 2024 at 03:53 PM.
