The friction power of the torque converter lockup clutch is too high
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Newbie
Joined: Nov 2017
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2013 GL 63
The friction power of the torque converter lockup clutch is too high
I just purchased a 2013 GL 63 30 days ago and am having a few issues, that i would like to see if anyone else has had. Its a code on the TCU 2783. The code first occored on vehicle at 15,500 miles and I guess has never been corrected. Currently the car has 30,500 miles. The condition happens only cruising down the highway at around 2000 rpm. The car has no power and will not accelerate and lasts 20 seconds and then goes away. Any input would be great
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Joined: Sep 2017
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2011 W204 C180 GGI (FL)
Hi Lanceej, just wondering if you've ever solved your issue?
Im also facing the same problem symptoms with my 2007 CLS550 with the same 722.9 gearbox I assume. Pulled codes P2783 (torque converter temp too high) and P0741 (torque converter clutch solenoid performance or stuck off).
Im also facing the same problem symptoms with my 2007 CLS550 with the same 722.9 gearbox I assume. Pulled codes P2783 (torque converter temp too high) and P0741 (torque converter clutch solenoid performance or stuck off).
Thread Starter
Newbie
Joined: Nov 2017
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2013 GL 63
Not yet. The dealer I bought it from agreed to take a look at it. Hopefully they will take care of it since it has been there for so long. I see there have been issues with the conductor plate and valve bodies, but I have no other codes to support that. You might check that since you do have that other code. I found this guideline on the 722.9 maybe it will help.
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Joined: Sep 2017
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2011 W204 C180 GGI (FL)
Thank you for sharing the guideline, it helped quite a lot in understanding the 722.9 box. I had my indy done readaptation however the problem still persisted. I know there thread has been inactive for a while, just wanted to know if you've managed to solve your issue by any chance?
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Joined: Apr 2019
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Gl450
Looks like this is what it might be
I just purchased a 2013 GL 63 30 days ago and am having a few issues, that i would like to see if anyone else has had. Its a code on the TCU 2783. The code first occored on vehicle at 15,500 miles and I guess has never been corrected. Currently the car has 30,500 miles. The condition happens only cruising down the highway at around 2000 rpm. The car has no power and will not accelerate and lasts 20 seconds and then goes away. Any input would be great
Newbie
Joined: Jan 2020
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Mercedes E220 CDI W212 Facelift
It seems like I have same problem on my E-Class W212 from 2013. 90.000km. It's the same fault codes and same symptoms P2783 (torque converter temp too high) and P0741 (torque converter clutch solenoid performance or stuck off).
I recently bought the car, and the dealer have now agreed to replace the TC with a new Sachs converter which seems to be only 25% the price of a original Mercedes TC. Crossing my fingers that this fixes the issue.
I recently bought the car, and the dealer have now agreed to replace the TC with a new Sachs converter which seems to be only 25% the price of a original Mercedes TC. Crossing my fingers that this fixes the issue.
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Joined: Apr 2019
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Gl450
It seems like I have same problem on my E-Class W212 from 2013. 90.000km. It's the same fault codes and same symptoms P2783 (torque converter temp too high) and P0741 (torque converter clutch solenoid performance or stuck off).
I recently bought the car, and the dealer have now agreed to replace the TC with a new Sachs converter which seems to be only 25% the price of a original Mercedes TC. Crossing my fingers that this fixes the issue.
I recently bought the car, and the dealer have now agreed to replace the TC with a new Sachs converter which seems to be only 25% the price of a original Mercedes TC. Crossing my fingers that this fixes the issue.
Please keep us posted... happening on my 2012 s550 120k miles.
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Newbie
Joined: Jan 2020
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Mercedes E220 CDI W212 Facelift
Just to give a little update on the problem on my W212. The dealer replaced the TC, but that didn't help at all.
Later on he decided to replace the complete automatic gearbox. He installed a used one from another car with similar mileage. The only thing reused was the computer board since the car will not accept a different serial number. The "new" gearbox created a lot of problems for the workshop and it still does some strange things now and then, like jumping out of gear. Totally by car spend 12 weeks at the workshop get this fixed... The original problem is however gone after replacing the gearbox and I don't see fault codes P2783 or P0741 anymore.
Later on he decided to replace the complete automatic gearbox. He installed a used one from another car with similar mileage. The only thing reused was the computer board since the car will not accept a different serial number. The "new" gearbox created a lot of problems for the workshop and it still does some strange things now and then, like jumping out of gear. Totally by car spend 12 weeks at the workshop get this fixed... The original problem is however gone after replacing the gearbox and I don't see fault codes P2783 or P0741 anymore.
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Junior Member
Joined: Oct 2009
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From: New York City
2014 ML63
I have a W166 Diesel with the same code P2783 as yall and causing to go into limp mode after some time it will like downshift and the rpm's will kick up and allow the car get speed . I had the TC replaced few years back with a used one, chance issue again or hope not leaning with a new gearbox finger crossed as @Tom_W said .
Junior Member
Joined: Oct 2009
Posts: 64
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From: New York City
2014 ML63
I have a W166 Diesel with the same code P2783 as yall and causing to go into limp mode after some time it will like downshift and the rpm's will kick up and allow the car get speed . I had the TC replaced few years back with a used one, chance issue again or hope not leaning with a new gearbox finger crossed as @Tom_W said .
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2015 GL63 AMG, 2008 R350 4matic, 2007 Passat Wagon VR6/4mo, 2015 Odyssey, 1985 IROC
I don’t have experience with these particular codes in this transmission but have extensive automatic transmission background.
The torque converter has a lockup clutch that is engaged in steady state conditions (like driving down the highway) to bypass the torque converter and improve efficiency. It is actuated by hydraulic fluid that is controlled with a solenoid. When the solenoid is stuck off, the lockup clutch can’t engage when the transmission control unit commands it to. This will result in excessive heat in the torque converter since all the slip heats up the fluid. These two codes seem to point to a faulty TCC solenoid, likely due to a mechanical failure or blockage due to debris since electrical failures likely have separate diagnostics and would yield a different DTC. I’m not sure if that solenoid can be replaced separately or if the whole valve body needs to be replaced as a unit but that is where I would start to look. If after disassembly and inspection the solenoid appears to be fine, it might be a blockage in one of the hydraulic passages in the valve body’s TCC circuit.
The torque converter has a lockup clutch that is engaged in steady state conditions (like driving down the highway) to bypass the torque converter and improve efficiency. It is actuated by hydraulic fluid that is controlled with a solenoid. When the solenoid is stuck off, the lockup clutch can’t engage when the transmission control unit commands it to. This will result in excessive heat in the torque converter since all the slip heats up the fluid. These two codes seem to point to a faulty TCC solenoid, likely due to a mechanical failure or blockage due to debris since electrical failures likely have separate diagnostics and would yield a different DTC. I’m not sure if that solenoid can be replaced separately or if the whole valve body needs to be replaced as a unit but that is where I would start to look. If after disassembly and inspection the solenoid appears to be fine, it might be a blockage in one of the hydraulic passages in the valve body’s TCC circuit.
Last edited by IndyR; Jan 14, 2022 at 02:22 PM.
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mercedes s500
glyn11
I don’t have experience with these particular codes in this transmission but have extensive automatic transmission background.
The torque converter has a lockup clutch that is engaged in steady state conditions (like driving down the highway) to bypass the torque converter and improve efficiency. It is actuated by hydraulic fluid that is controlled with a solenoid. When the solenoid is stuck off, the lockup clutch can’t engage when the transmission control unit commands it to. This will result in excessive heat in the torque converter since all the slip heats up the fluid. These two codes seem to point to a faulty TCC solenoid, likely due to a mechanical failure or blockage due to debris since electrical failures likely have separate diagnostics and would yield a different DTC. I’m not sure if that solenoid can be replaced separately or if the whole valve body needs to be replaced as a unit but that is where I would start to look. If after disassembly and inspection the solenoid appears to be fine, it might be a blockage in one of the hydraulic passages in the valve body’s TCC circuit.
The torque converter has a lockup clutch that is engaged in steady state conditions (like driving down the highway) to bypass the torque converter and improve efficiency. It is actuated by hydraulic fluid that is controlled with a solenoid. When the solenoid is stuck off, the lockup clutch can’t engage when the transmission control unit commands it to. This will result in excessive heat in the torque converter since all the slip heats up the fluid. These two codes seem to point to a faulty TCC solenoid, likely due to a mechanical failure or blockage due to debris since electrical failures likely have separate diagnostics and would yield a different DTC. I’m not sure if that solenoid can be replaced separately or if the whole valve body needs to be replaced as a unit but that is where I would start to look. If after disassembly and inspection the solenoid appears to be fine, it might be a blockage in one of the hydraulic passages in the valve body’s TCC circuit.
im the car drove fine for 2 days then the revs got stuck at 5000r when i pulled over the car would not select reverse or drive turned the ignition of and every thing was ok but i get a distinkt clunk when i select drive was told i need a new valve body replacement but i have gearbox speed sensor faults and friction power of the torque lock up is to high 2783 i think
dont know if its the torque converter or the conducter plate ???
can anyone help
