Powertrain Module
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 15
Likes: 0
Mercedes E240
Powertrain Module
Just had my W210, 2000 model, transmission service. At 120K, probably its first. Scan and detect diagnose's found to have CAM communication errors with powertrain module. If you ram your foot down on take off, it will sometimes hang in low gear. Release accelerator an will change up. Take off normally and no problems.
Am I doing any damage, continuing to drive it, within its limitations, or will I have to replace the complete module?
Anyone out there had the same problems?
I would appreciate opinions from those who have had the same problem
Ian D.
Am I doing any damage, continuing to drive it, within its limitations, or will I have to replace the complete module?
Anyone out there had the same problems?
I would appreciate opinions from those who have had the same problem
Ian D.
MBWorld Fanatic!
Joined: Nov 2012
Posts: 6,130
Likes: 1,117
A gaggle of MB's
On this stuff - you need to 1st make sure the communication between the transmission and the Transmission Control Module is "clear".
It is a common issue at your mileage - that the transmission adapter plug (the harness end at the tranny) gets internal leakage - which fouls the communication - and/or over time the tranny fluid from that internal plug leak "wicks" up the cable harness to foul the Transmission Control Module board in the engine compartment.
Do not be discouraged - 1st, ONLY use a genuine MB or MOPAR/Crossfire replacement adapter plug - no worries - under $15.
Search the forum or internet/Youtube on how to change that plug out.
Also do a forum search - or internet/Youtube - on how to pull the TCM board in the engine compartment - if there is fluid - buy a $9 can of MAF cleaner - flood the board both sides until the contamination runs off both sides - spray clean the internal connector - let the board air-dry (no heat) before reinstall.
The other good news - the replacement tranny adapter plug will last forever.
ONLY when you confirm the communication is "clear" - and once code has cleared - then you can see if it reappears later.
"Majority" of this kind of stuff at your mileage is that plug related..
Keep the beat !
It is a common issue at your mileage - that the transmission adapter plug (the harness end at the tranny) gets internal leakage - which fouls the communication - and/or over time the tranny fluid from that internal plug leak "wicks" up the cable harness to foul the Transmission Control Module board in the engine compartment.
Do not be discouraged - 1st, ONLY use a genuine MB or MOPAR/Crossfire replacement adapter plug - no worries - under $15.
Search the forum or internet/Youtube on how to change that plug out.
Also do a forum search - or internet/Youtube - on how to pull the TCM board in the engine compartment - if there is fluid - buy a $9 can of MAF cleaner - flood the board both sides until the contamination runs off both sides - spray clean the internal connector - let the board air-dry (no heat) before reinstall.
The other good news - the replacement tranny adapter plug will last forever.
ONLY when you confirm the communication is "clear" - and once code has cleared - then you can see if it reappears later.
"Majority" of this kind of stuff at your mileage is that plug related..
Keep the beat !
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 15
Likes: 0
Mercedes E240
Thanks guys for what appears to be good news.
Unfortunately the mech. who did the work is off sick, but interesting thing is the machine that did the job has died, taking all records with it. Bugger.
As I was told, the problem was between the module that communicates between the motor and the transmission.
I think my next move will be to get a second test done, this time with a print out.
Unfortunately the mech. who did the work is off sick, but interesting thing is the machine that did the job has died, taking all records with it. Bugger.
As I was told, the problem was between the module that communicates between the motor and the transmission.
I think my next move will be to get a second test done, this time with a print out.
MBWorld Fanatic!
Joined: Nov 2012
Posts: 6,130
Likes: 1,117
A gaggle of MB's
The "test" won't give you accurate/correct info UNLESS you replace the tranny adapter plug AND clean the TCM board.
A incorrect error code will lead you to a un-necessary and much more expensive repair
A incorrect error code will lead you to a un-necessary and much more expensive repair
Thread Starter
Junior Member
Joined: Nov 2013
Posts: 15
Likes: 0
Mercedes E240
Thanks guys for the information, but as I am fast approaching 86, I think it will best be left to the pro's . The transmission guy assured me he checked and cleaned the plug, and also inspected for wicking. So have booked it in with Benz dealer for authentic inspection. Hang the expense, I'm not going to live forever!
Newbie
Joined: Nov 2015
Posts: 1
Likes: 0
silver 01 ml 500
Ml 500
On this stuff - you need to 1st make sure the communication between the transmission and the Transmission Control Module is "clear".
It is a common issue at your mileage - that the transmission adapter plug (the harness end at the tranny) gets internal leakage - which fouls the communication - and/or over time the tranny fluid from that internal plug leak "wicks" up the cable harness to foul the Transmission Control Module board in the engine compartment.
Do not be discouraged - 1st, ONLY use a genuine MB or MOPAR/Crossfire replacement adapter plug - no worries - under $15.
Search the forum or internet/Youtube on how to change that plug out.
Also do a forum search - or internet/Youtube - on how to pull the TCM board in the engine compartment - if there is fluid - buy a $9 can of MAF cleaner - flood the board both sides until the contamination runs off both sides - spray clean the internal connector - let the board air-dry (no heat) before reinstall.
The other good news - the replacement tranny adapter plug will last forever.
ONLY when you confirm the communication is "clear" - and once code has cleared - then you can see if it reappears later.
"Majority" of this kind of stuff at your mileage is that plug related..
Keep the beat !
It is a common issue at your mileage - that the transmission adapter plug (the harness end at the tranny) gets internal leakage - which fouls the communication - and/or over time the tranny fluid from that internal plug leak "wicks" up the cable harness to foul the Transmission Control Module board in the engine compartment.
Do not be discouraged - 1st, ONLY use a genuine MB or MOPAR/Crossfire replacement adapter plug - no worries - under $15.
Search the forum or internet/Youtube on how to change that plug out.
Also do a forum search - or internet/Youtube - on how to pull the TCM board in the engine compartment - if there is fluid - buy a $9 can of MAF cleaner - flood the board both sides until the contamination runs off both sides - spray clean the internal connector - let the board air-dry (no heat) before reinstall.
The other good news - the replacement tranny adapter plug will last forever.
ONLY when you confirm the communication is "clear" - and once code has cleared - then you can see if it reappears later.
"Majority" of this kind of stuff at your mileage is that plug related..
Keep the beat !
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Member
Joined: Feb 2019
Posts: 97
Likes: 20
From: Fl
W215
If still can, post the quick test results and or provide the exact dialog of the tester!!
FYI a CAN communication error simply means the control module can't communicate with an input or a group of imputes and does not automatically mean the control module is faulty!!
PS: Don't go the route of BW BS Billy and start spraying things!!
FYI a CAN communication error simply means the control module can't communicate with an input or a group of imputes and does not automatically mean the control module is faulty!!
PS: Don't go the route of BW BS Billy and start spraying things!!
Member
Joined: Feb 2019
Posts: 97
Likes: 20
From: Fl
W215
Due to following. It really helped
Before reading this thread I had changed the conductor plate flushed the fluids. And got new codes on STAR. Replaced the TCM. Because I found evidence of oil in the board. And what do you know it worked. Running TCM from W211.
