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CL500 722.6 TC not locking up

E240estate

Active Member
Joined
Aug 19, 2014
Messages
66
Car
2003 S211 E240 Estate; 2003 W638 Vito
As title really, car drives absolutely fine and no codes.
But it's obvious the torque converter does not lock up as it's very revvy on the accelerator.
Most of the time it shows OPEN it will go to SLIPPING.
So even on the motorway it never shows much more that about 45/255 locked.
There's always a rev difference of at least 20.
Is it a reasonable next step to change the TC solenoid? Pretty confident at doing this as part of a diy fluid and electrical connection change which is due.
Or do I need to test it some more to be sure this is the trouble?
 
You should be able to lock the torque converter using diagnostics, think it only stays locked at low speeds for testing but that would prove it does lock??
 

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