Is there a way to calibrate the adaptive cruise control without going to the dealer? I damaged my bumper, I hit the concrete corner base of a light pole, in a parking lot, at a very slow speed. The adaptive cruise control worked fine for two months, but then quit working. The dealer blames the failure on the bumper damage. That may be true, but the slow speed impact didn't touch the module and again, it continued to work for two months after. Anyway, the dealership wants a boat load of money to replace. The aftermarket bumper that I ordered will arrive soon and then I will replace the module myself if I can't get the old unit to work. I get this DTC code B124E:78-AF I read it as an aiming/calibration problem, not a failure. Any ideas or help will be appreciated.

 

 

If I had to guess the sensor is shot and there is no calibration for a broken sensor. It will have to be replaced. Similar issue happened with my wife's suv. Driving on the freeway all of her driver assist features started going off. Had to manually disable all of them so she could drive it. Took it to dealer and they said the sensor was damaged from a stone impact and had to be replaced. $3300 part and repair that was covered under warranty thankfully. The kicker was that the sensor had absolutely zero signs of any kind of impact whatsoever but the tech said inside it was damaged so maybe the plastic covering is protecting the actual sensor and there could be damage to yours that isn't visible from the outside.

 

Suck it up--part replacement. Sorry but that is the long and short of it. No way to "tinker" with those. They are tinker proof as you might imagine because of what they do.

 

I would say your dealer is a great guy for replacing it. Especially if it was damage from an impact. That is really not a defective part. Good for you. Adaptive cruise parts are EXPENSIVE!!!!!

Sam

 

 

If the sensor is broken there is no calibration that will overcome it because the part no longer functions so there is nothing to calibrate.

 

I would agree if it was the Ford as it only really affects the adaptive cruise control for the most part. With my wife's suv the front sensor failure triggered the cameras to come on, the alarms to sound and the brakes to apply since the failed sensor was telling the suv that a frontal impact was imminent. The only way to continue driving it was to fully disable the entire driver safety system. Their warranty is bumper to bumper for 100,000 miles. I have never had an issue where they refused to cover something under warranty thankfully. Knocking on wood as I probably just screwed myself. Fwiw they are motivated to maintain our suv properly since we trade every 3 years or so. The used market is hot and very profitable for them so they are always willing to make a deal to trade us up. I've never done that with my pickups but I may consider it after seeing how quickly the used SD trucks go.

 

 

I think you would have to look in the service manual for instructions on how to calibrate it. There may be some tools required, maybe something that interfaces with the system so you can "see" what the sensor sees.

I had mine apart to take off my bumper. The sensor is on a bracket. Just removing the bracket - with the sensor still attached - wasn't a problem for me. If you can get the new sensor attached to the bracket the exact same way it may work just fine, but I'm guessing here.

 

 

 

 

 

New bumper.