simongunz

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