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The LKA is based on the radar sensors in the front and rear bumpers, not the camera in the windshield. That is for the auto high beam function.
You most likely have either wiring corrosion in the harness connecting the radar sensors (most likely the rear, quite common) or bad sensors as a result of the corrosion.
Or you could have water ingress corroding the SAM, which controls some of those functions as well. Are you noticing the Blind Spot Assist also not working?
My RAM uses the radar sensors for the Lane Assist.
Honestly, I have that feature turned off on both cars...
Radar is used for Blind Spot Assist (metal object approaching/nearby). Maybe that's what you were thinking about. Parking Assist uses ultrasonic frequencies (often 40~42 Kilohertz). I'm not sure how the RAM could use radar for Lane Keep Assist unless there are really significant amounts of metal flakes in the white lane marking paint. Never heard of that but who knows.
The LKA is based on the radar sensors in the front and rear bumpers, not the camera in the windshield. That is for the auto high beam function.
You most likely have either wiring corrosion in the harness connecting the radar sensors (most likely the rear, quite common) or bad sensors as a result of the corrosion.
Or you could have water ingress corroding the SAM, which controls some of those functions as well. Are you noticing the Blind Spot Assist also not working?
blind spot assist works perfect
Originally Posted by MBKLUE
That's incorrect. Lane Keep Assist uses the camera.
I guess the next step is to replace the camera, but before that ill check the fuses, but im not sure which fuse to even check
I guess the next step is to replace the camera, but before that ill check the fuses, but im not sure which fuse to even check
I don't know which fuse it is for LKA or for the heated steering wheel. Could even be the same fuse. There may be a relay also for the heated steering wheel function. If you are able, you should check to see if the camera is getting power.
I would not replace things until someone goes over what circuits are used , if both stoped working at the same time they probably are the same circuit , it could be just a bad ground .
LKA and heated steering wheel are unrelated functions, and it would seem moronic to power them through a shared fuse. So this probably indeed the case as MB wouldn't want to provide an easy way to disable LKA without consequence (lol). There should be a fuse diagram somewhere in your car. Mine was stuffed next to the fuse block under the rear seat. Your dealer should be able to provide you a copy.
LKA and heated steering wheel are unrelated functions, and it would seem moronic to power them through a shared fuse. So this probably indeed the case as MB wouldn't want to provide an easy way to disable LKA without consequence (lol). There should be a fuse diagram somewhere in your car. Mine was stuffed next to the fuse block under the rear seat. Your dealer should be able to provide you a copy.
I would be kind of surprised if both were powered by the same fuse, but, if they were, I would not find it outrageous. LKA is not a standard or mandatory feature. It's a "nice to have" that can, no doubt, lull some people into a false sense of safety and reduced responsibility. It can also be turned off by the driver, as provided by MB, so I would argue there is an easy way to defeat it.
Left and right headlights ARE related "functions" yet do have independent fuses for obvious safety reasons. Naturally, they're mandatory items and not just "nice to haves."
I would be kind of surprised if both were powered by the same fuse, but, if they were, I would not find it outrageous. LKA is not a standard or mandatory feature. It's a "nice to have" that can, no doubt, lull some people into a false sense of safety and reduced responsibility. It can also be turned off by the driver, as provided by MB, so I would argue there is an easy way to defeat it.
Left and right headlights ARE related "functions" yet do have independent fuses for obvious safety reasons. Naturally, they're mandatory items and not just "nice to haves."
Heating element functions -- steering wheel, seats, windshields -- are usually separately fused. My LKA switch is just above the headlight control and is wired through a LIN bus to one of the ECUs from which it receives its power. Maybe the simultaneous steering wheel heater and LKA malfunctions are just coincidental, or maybe their activation controls are collocated in the same SAM unit as was mentioned in an earlier post.
Heating element functions -- steering wheel, seats, windshields -- are usually separately fused. My LKA switch is just above the headlight control and is wired through a LIN bus to one of the ECUs from which it receives its power. Maybe the simultaneous steering wheel heater and LKA malfunctions are just coincidental, or maybe their activation controls are collocated in the same SAM unit as was mentioned in an earlier post.
Yeah, the GLK and other "modern" cars have tons of fuses and, of course, things that are heated typically draw a good bit of current. No mention has been made by the OP if the problems occurred, or are believed to have occurred, at the same time. That would be useful info.
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