Fan On always, srs light, cruise control, and display malfunction
Thread Starter
Newbie
Joined: Sep 2020
Posts: 1
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2006 E350 4matic
Fan On always, srs light, cruise control, and display malfunction
Please help! Recently on a road trip home after driving about 350-450 miles in 90 degree heat with the a/c blasting the computer started going bonkers on me. First the srs light came and display malfunction warning. When i got the car home I turned it off for a couple hours before starting it again. It wouldnt start that night, but the next morning it started right up running rough with the radiator fan coming on full blast. Ever since then the fan comes on everytime i run the car along with the srs light, cruise control, and display malfunction. Ive read that two things can cause the fan to go on like that, either the engine running too hot or the a/c being low on freon. I topped the coolant and the a/c still blows cold, the engine temperature gauge stays right where it always is and no check engine light comes on. Please advise
Super Member
Joined: Feb 2007
Posts: 613
Likes: 297
From: Republic of Texas
W203 W212 W211 R53MCS
You can guess all day..... but the first thing you need to is scan the car to see what exactly is going on. Sounds like you have an issue with the central gateway.... but scanning the car should be the first thing.
