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Old 06-20-2013, 08:59 AM
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After leaving the dealership service department for another issue, I was driving around and suddenly started receiving this error message and random "BRAKE" messages from the FCW system. I pulled over to clean the radar sensor and noticed the plastic square molding with the round cutout around the radar sensor was no longer on the truck. I'm not sure if it was removed and never put back on by the service tech, or it popped off by itself.

By the time I realized what was wrong, the service department was already closed. I'm assuming the missing piece is causing the error messages. I'll update this post when I get a chance to go back to the dealership again. Just figured I'd share with you guys if you ever come across this.
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Old 06-20-2013, 09:51 AM
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Re: ACC / FCW Error Message

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Originally Posted by EdwinDiaz View Post
After leaving the dealership service department for another issue, I was driving around and suddenly started receiving this error message and random "BRAKE" messages from the FCW system. I pulled over to clean the radar sensor and noticed the plastic square molding with the round cutout around the radar sensor was no longer on the truck. I'm not sure if it was removed and never put back on by the service tech, or it popped off by itself.

By the time I realized what was wrong, the service department was already closed. I'm assuming the missing piece is causing the error messages. I'll update this post when I get a chance to go back to the dealership again. Just figured I'd share with you guys if you ever come across this.
Interesting, Please post a picture of that piece missing.

Thanks!
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Old 06-24-2013, 11:26 PM
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Originally Posted by Willx View Post

Interesting, Please post a picture of that piece missing.

Thanks!
Sorry it took so long to reply, I was away on vacation. The first picture is what it is supposed to look like. The second picture shows the missing piece on my truck. I brought it to the service department today and they have to order the part. They "strongly feel" the missing cover is causing all of the error messages. I'll post the results when the part comes in.
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  #4  
Old 06-25-2013, 01:44 AM
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Re: ACC / FCW Error Message

I seem to recall someone else on the forum also losing this piece.

Tony
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Old 06-25-2013, 03:42 AM
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Re: ACC / FCW Error Message

Ainīt the sensor sitting a liitelbit low within its frame? Maybe the malfunction is due to a misalignement...

Good luck

Achim
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Old 06-25-2013, 04:12 AM
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Re: ACC / FCW Error Message

Quote:
Originally Posted by EdwinDiaz View Post
Sorry it took so long to reply, I was away on vacation. The first picture is what it is supposed to look like. The second picture shows the missing piece on my truck. I brought it to the service department today and they have to order the part. They "strongly feel" the missing cover is causing all of the error messages. I'll post the results when the part comes in.
Yes the alignment is off and the piece provides a reference angle for the view of the sensor. They are correct, it is very likely this is the cause.

As another poster noted, I wonder if this has happened before?
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Old 09-10-2013, 07:05 PM
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Re: ACC / FCW Error Message

Thanks Edwin! I had the same error messages, and after reading your post I remembered that a couple of days ago I brushed against something when entering my garage. I went to take a look and sure enough the part was missing from my truck as well. I ended up finding the molding next to a cooler.
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Old 09-10-2013, 09:46 PM
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Thanks Edwin! I had the same error messages, and after reading your post I remembered that a couple of days ago I brushed against something when entering my garage. I went to take a look and sure enough the part was missing from my truck as well. I ended up finding the molding next to a cooler.
Glad the post helped you! Take care.
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Old 09-11-2013, 11:28 PM
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Re: ACC / FCW Error Message

Unfortunately I'm still getting the error message, even after putting the molding back on and wiping off the sensor.
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Old 09-12-2013, 08:35 AM
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Re: ACC / FCW Error Message

Maybe whatever caused the shroud to come off also damaged the sensor?
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Old 09-12-2013, 04:50 PM
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Quote:
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Unfortunately I'm still getting the error message, even after putting the molding back on and wiping off the sensor.
When that piece fell off of my truck, I brought it back to the dealership. The dealership stated the bracket holding the radar sensor was damaged, causing the radar sensor to move and become misaligned. It appears since the radar sensor bracket was broken, the moving of the sensor popped the plastic molding off of the truck. Sorry to say, but it took a few weeks for the part to come in and a day or so aligning the sensor. Good luck.
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Old 09-15-2013, 06:41 AM
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Re: ACC / FCW Error Message

My Cruise and ACC workes fine...EXCEPT....when I hit "resume" after braking, then I get the "ACC/FCW needs service warning". I just needed to shut cruise off then restart and all was well.

Yesterday I looked at the square molding referenced here and sure enough the top part was protruding about to fall off. I put back in place and tested on interstate and sure enough, problem went away.

Kudos to this sight and thread for helping me avoid trip to dealer for such an easy fix.

Chuck
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