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Hello all, I had just finished up with a transmission fluid and filter change on 06 CLS 55 AMG... I just did the pan fluid not a full flush and I changed the electrical sleeve that leaks past the o-rings and mine had some leakage. I had a problem with the cam style connector shearing the tabs that draw the connector harness into the sleeve. I drove the car with connector seated 95% (best I could get) and it shifted fine and no CEL on till after I reset the adaptive shift parameters:
LAST STEP—RESET TRANSMISSION ADAPTATIONS
1. From a car that is totally off, insert key into ignition. Push gas pedal to floor and hold it.
2. While holding the gas pedal floored down, turn the key to position 2 (all warning lights come on), but do
NOT start the car, and count for 5 seconds.
3. Turn key back to position 1 (accessory only), you can now let go of the gas pedal.
4. Wait a full 2 minutes of doing nothing inside the car—do not exit the car or mess with radios/windows/etc.
—wait the full 2 minutes.
5. After 2 minutes has elapsed, you can now start the car and drive off with smooth and crisp shifting as your
car resets its shift adaptations on new ATF fluid.
After that the trans would not shift and was stuck in second (limp mode) so I got a new connector sleeve and robbed the yellow fastener piece off it and put it on my new sleeve in the trans and I was able to get the harness connector to seat fully. I test drove it after and no change still stuck in 2nd. So I run through the aforementioned resetting of adaptive shift parameters again and drive then I get two codes for shift solenoid A and B and a check engine light on. I clear the codes successfully and test drive and yet still stuck in second.
Kind of stuck on what to do now. I am fairly familiar with auto transmissions but mainly Allison's. Why did resetting the adaptive shift parameters cause this. I was leary of doing so because it's not necessary when just changing pan fluid and filter but I thought it may firm up the shifts some.
Did you clear the codes in the transmission? If you didn't it won't matter whether you repaired it or not it will remain in second gear until you clear the codes which means you need a scanner that reads and clears transmission codes. High end Snap-On ultra or Star a Diagnostic system will do it no sweat. Good luck.
Hello I just used an icarsoft mbii scanner for Mercedes Benz last night and I did clear a P2101 code for solenoid valve and it reoccurs after test drive. Transmission says it's running in emergency mode hence the stuck in second. The electrical connector is fully seated and even when it was not the trans shifted like normal UNTIL I reset the adaptive shift parameters. Then it went into limp mode. Any ideas? Thank you!
Yeah, when I reinstalled the pilot bushing plug I did not have it clocked right and when I used the cam lock to draw it in I bent one of the pins on the conductor plate of which eventually grounded against another pin causing the debate.
soi had to replace the conductor plate.
Thanks, yeah sucked it was my fault but live and learn and take the time to measure that pilot bushing plug for proper alignment. Quite a costly remedy. Thanks
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