ML320 0730 error code.

You need to scan for saved codes and post them here.
Have you checked and replace the Connector/adapter plug?
And check the harness for "weeping" leakage that travels up the harness ?
EDIT: whats the "206A-004"? typo error?
Is the ESP light on?
Please check for codes in the Transfer Case control module.
Last edited by Maj. Dundee; Mar 24, 2019 at 05:04 AM.
Never changed oil, car has 113k
Interesting you say about weeping oil. noticed oil at the Transmission control module. Sorry where is the connector/adaptor plg?
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Im guessing your tranny oil is gonna be black and filthy. change it and post it's contents.
The search engine is your best friend BluesmanSF. Here on this forum and abroad.

Here's one of many examples (may no be the best...) to your query:
The Best of Mercedes & AMG
As for the "clunking", that has nothing to do with the display of 730d
You need to scan for saved error codes and post here.
The clunking is occurring on level ground?
You never answered..... what's the condition / color of the oil?
Did you review the video and check the connector/adapter plug?
Correct the trans fluid level to spec--not low, not too high either.
If still not working right, have the car completely SCANNED at a MBZ Dealer.. mANY DIFFERENT THINGS INTERACT WITH TCM & ENGINE CM. DO NOT waste money and time throwing any other parts at the problem until it is PROPERLY DIAGNOSED.






