Automatic Emergency Braking Wipe front radar sensor

[Diggs816]

2021 Ram, Bought the truck the ACC and AEB along with the automatic headlights were not working. Dealer stated that the previous owner had the cracked windshield replaced needless to say. The dealer replaced the windshield and calibrated everything NO CHARGE !! @ 3 months later about 2 hrs into a drive the ACC and AEB quit working and flashed on the console. The next morning I woke up started the truck the ACC went off. I tried manually to turn on the Front Collision warning. I got a warning "AEB unavailable wipe front radar sensor." SO now the automatic high beams and AEB is not working. Does anyone know the location of the front radar sensor? I have cleaned the round parking sensors enough to polish chrome. I know this is the parking sensors and have nothing to do with it.

Any help would be appreciated.

 

[vincentw56]

The parking sensor on the front bumper have nothing to do with any of that. The radar sensor is on the top of the windshield, you can see it in the middle.

 

[Bluedasher]

2021 Ram, Bought the truck the ACC and AEB along with the automatic headlights were not working. Dealer stated that the previous owner had the cracked windshield replaced needless to say. The dealer replaced the windshield and calibrated everything NO CHARGE !! @ 3 months later about 2 hrs into a drive the ACC and AEB quit working and flashed on the console. The next morning I woke up started the truck the ACC went off. I tried manually to turn on the Front Collision warning. I got a warning "AEB unavailable wipe front radar sensor." SO now the automatic high beams and AEB is not working. Does anyone know the location of the front radar sensor? I have cleaned the round parking sensors enough to polish chrome. I know this is the parking sensors and have nothing to do with it.

Any help would be appreciated.

While I had my truck at the dealership to have a recall serviced, I asked them to also diagnose the AEB warning that has been occurring sporadically since I got the truck (automatic emergency braking disabled wipe front RF sensor). At first they didn't know which sensor was which; they were concerned about the rain sensor, which is an option that I don't have (even though the hardware is installed). They also thought it might be the windshield, which was replaced. I showed them old pictures showing that the error was occurring before the windshield was replaced. Days later the dealership consulted with an expert advisor and concluded that the front camera module needed to be replaced. I asked them to save the module so I could open it and look for any fundamental issue, which I don't see. It appears to use a printed phased array antenna, which makes sense but there is nothing obvious that would cause a blockage.

That fixed the problem.