W202 722.6 Transmission Going into Limp Home Mode
I have a 99 C280, and its transmission seems to go into 'limp home' mode at random times, perhaps a couple of times per week. If I turn off the engine and restart, it ususally returns to normal. I have recently changed the transmission oil, but it has been happening prior to the fluid change.
A quick search on this forum revealed that it might be a 'sensor plate' that could cause this problem. Is this the correct diagnosis? How much does it cost to replace it at the dealer or a shop? Can this be a DIY? If so, what parts should I get, and what is the procedure? Thank you in advance, w202wraith |
The first step in diagnosis is fault code retrieval of all modules. Post any stored codes.
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The odd thing is that my mechanic told me that there are no stored codes. I'll borrow my friend's ODB-II scanner to see if there are any codes.
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whenever I work on my C-classes to fix a computer or sensor issue. I always make sure my battery is 100%.
I also don't take any chances and install a new Mercedes battery every four years in my cars. But I doubt limp home mode is activated by a weak battery on a 202. |
OBDII will not pull the trans codes. You are going to need a dealer quality scanner for that.
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