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Wierd problem with "lane keeping assist inoperative " message
I have an ML400, 42,000 miles and has recently developed a problem.
The lane keeping assist inoperative message comes on the info display.Approx 5 minutes later i loose the function of the turn signals!
Now here's the really weird thing, i can drive the vehicle for weeks at a time and all around where i live and have no problems at all, however, on the odd times i take my wife to work in Washington DC, i use the I95/I395 and as on the enclosed map, the problems start when I'm in the area highlighted in red! !! i usually here the lane assist noise a couple of times within a few minutes and then the warning omes on the dash, i can still use the turn signals for 4 or 5 minutes but after that they don't work! when i do pass a vehicle or one passes me, the red warning triangle appears in the exterior side mirrors and flashes red until the vehicle has passed.
As soon as i turn the vehicle off and back on, everything works as normal!
The vehicle drives fine and has no other problems except the above,
Anyone have any ideas ? ( not conspiracy theories,lol)
Thanks
Last edited by simongunz; Jul 16, 2024 at 08:13 AM.
Okay, this is good progress... your DISTRONIC module reports a stored transient code. prioritizing faults
the 2 faults at the bottom are standard factory unstable radars.. these radars don't even work well from factory.
Thanks for the info, Ive checked the radar sensors several times and theres no dirt or debris, they look fine, would it be the actual control module that needs replacing ?
Thanks for the info, Ive checked the radar sensors several times and theres no dirt or debris, they look fine, would it be the actual control module that needs replacing ?
Very unlikely.
The front side radars won't help your "lane keeping assist" issue - These short-range radars "work" despite the standard errors you may ignore in this context.
LKA uses the WINDSHIELD CAMERA module named MFK.
This module has solderless connections that become increasingly marginal given oxidation.
Can your scanner interact with MFK... active or missing?
Try simply "clearing fault" to restart it.
Last edited by CaliBenzDriver; Aug 13, 2024 at 01:38 PM.
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