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Hi, welcome to Just Answer. My name is***** are you using to scan and erase the fault codes with?
Are you scanning the transmission control unit or just the engine control unit?
It's not going to come out of limp home mode until you erase the codes in the transmission control unit. If your scanner can't read and erase the codes in the TCU that is the problem. You need to erase the codes in the TCU and it should be fine as long as your new transmission is good.
Are you still there?
Sorry for the wait I was driving home.
The transmission is in limp home mode. You don't need a new speed sensor unless the codes return after you erase the codes in the transmission control unit. You need a factory level scan tool to erase the fault codes in the transmission control unit.
Let me know if you need anything else.
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Hi, I'm just following up with you on the Mercedes. Was my answer helpful?