Forward collision warning sensor issues

Has anyone else had issues with their forward collision warning sensor this winter? I have put over 2k miles on my wife’s truck this last week. The first time I had an issue was during a 2 hour drive through constant rain. Near the end of the drive it finally stopped raining and the outside temp went below freezing. The truck threw a collision warning fault on the dash and that killed the adaptive cruise control. I checked the plastic bumper cover and it had no ice on it so whatever was causing the issue had gotten up behind the bumper cover. Is anyone aware of how to get behind the plastic portion of the bumper to clean off the radar unit, and is it even possible without actually removing the plastic cover? The annoying thing was it was below freezing and it took 3 days before it warmed up enough to melt the ice off of the unit. Being without the adaptive cruise was a major bummer, I have grown to really love that feature. The second time it happened was during during my 800 mile drive home. I expected it to happen because of the amount of ice built up on the front of the truck. Ford touts the collision warning as a safety feature, I guess it might be as long as you live where it doesn’t get below freezing outside. Fortunately for me I have a heated garage, so normally it will melt off every day when I get home, but it’s annoying when I’m away from home.

Now, with all that being said, I love the Raptor and would not want to have any other truck out there right now. So Jake you can table your “get a Ram” comment... My uncle has a new Ram, let’s just leave it at “no thanks.”

Here’s a pic of the bumper after it had problems the second time. As I said, not unexpected with this amount of ice.

Interesting. Where is the sensor exactly?

FastEddie said:

Interesting. Where is the sensor exactly?

Click to expand...

My understanding is it is behind the plastic piece in the bumper directly above the drivers side tow hook.

Sometimes you have to turn off adaptive cruise and run regular cruise. Pain , but not much else you can do

They don’t make that bumper cover easy to get off and whomever created those accursed clips - a pox be upon their house.

Maybe it would be worth doing one of the intercooler ACC relocation mods to get better access?

Hook up a hose to windshield washer fluid?

yep.....even got an alert on my wifes explorer through the ford app for this problem. Made me think she was in an accident at first.

Ya I've had the same issues and removed that cover once already. As stated it just pulls off but odds are 100% your breaking a clip, broke 4 and bought my second cover already. Best bet is to just wait until it thaws or restart the truck

I have this same issue with a custom bumper that does not have a cover the sensor, just a screen. I have messed with the wires and connections but still have issues at times. The sensor is always clean as well and still have issues. The only thing I can think it that the sensor is going out or needs to be recalibrated. When my truck goes back to my builder for service in a couple of weeks they will be looking into it. If someone has any other guidance please let me know.

Yep. I have had the same problem. Not with my Raptor but F-350. After thawing it worked fine. Only issues have been with snow and ice.

Sam