Back up sensors not working

Tiny
RYAN
  • ADMIN
  • 2005 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 121,000 MILES
Hey guys, I just bought this truck used and the back up sensors do not work. The "off" light in the cab is permanently on and there is no beeping when in reverse. I checked fuse 18, the related fuse, and it is intact. What should I check next?
Do you
have the same problem?
Yes
No
Tuesday, October 17th, 2017 AT 11:09 AM

4 Replies

Tiny
MHPAUTOS
  • EXPERT
First thing to check is that the sensors are still wired up, make sure that the loom is not damaged or disconnected at the loom plug, start here.
Was this
answer
helpful?
Yes
No
Tuesday, October 17th, 2017 AT 5:26 PM
Tiny
STEVE W.
  • EXPERT
Check the sensors themselves. Chock the wheels, turn the key on, put it in reverse and go back and listen to each sensor. If the system is working you will hear each sensor ticking faintly. You need to get close to hear it, cover it and the sound should change. All four need to work or the system will stay off. They fail a lot!
Was this
answer
helpful?
Yes
No
+1
Wednesday, October 18th, 2017 AT 12:41 AM
Tiny
RYAN
  • ADMIN
They are all getting power. I checked via a test light. But Steve totally nailed it! One of them is not clicking. I turned the truck to accessory with out starting it and put it in reverse. I then listened for the clicking all of the click softly except for one. So I assume that sensor is out.
Was this
answer
helpful?
Yes
No
Wednesday, October 18th, 2017 AT 12:17 PM
Tiny
STEVE W.
  • EXPERT
While listening to them, be sure to put something over the sensor and listen for it to change the sound. No change in the sound is also a bad sensor. You can get them in sets online for a lot less than parts houses or the stealership.
Was this
answer
helpful?
Yes
No
Wednesday, October 18th, 2017 AT 2:03 PM

Please login or register to post a reply.

Sponsored links