gretaschneider54
CLK Radiator Oil Pressure Problem Solved
Summary of the thread
A 2010 Mercedes CLK with 214,845 km exhibited a radiator oil pressure malfunction, leading to transmission issues such as rough shifting and grinding. The suspected cause was a cable or plug issue, with an error code present. After investigation, a defective radiator oil pressure sensor cable connection was identified and replaced, resolving the problem and restoring normal transmission function.
Did this summary help you solve your problem?
4 comment(s)
gretaschneider54 (community.author)
Coolant level is fine. No visible coolant leak detected. Are you suggesting a minor, undetected radiator coolant leak could cause radiator oil pressure issues and transmission problems?
leomueller1
Yeah, that's what happened to me. It was a hairline crack in the radiator. I didn't see it at first. The glycol contamination messed with the electricals. Best bet is to have a shop pressure test the cooling system to check for leaks. Could be a bad sensor too, but start with the easy stuff.
gretaschneider54 (community.author)
Confirmed. Took it to the workshop. They found a defective radiator oil pressure sensor cable connection. Replaced it. Error gone, transmission shifts normally. Total cost 95€. Thanks for the pointer.
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
MERCEDES
community_crosslink_rmh_model
CLK
leomueller1
Sounds familiar. I had similar issues with my CLK's transmission a while back. Was the radiator coolant low? Check for leaks around the radiator hoses and the radiator itself. Sometimes a small coolant leak can cause car overheating and weird electrical issues later, throwing off the TCU.