SPONSORED LINKS

Rear Brake and turn signal lights are not working?

Tiny
ALSTON RAASCROCK
  • MEMBER
  • 2005 FORD EXPEDITION
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 246,794 MILES
The high mount light is working.

I changed all the bulbs (3157) rear stop and signal bulbs.

I checked the fuse 2 and 18 both look good but replaced it

I checked the brake socket with a voltage meter, and it read 7.9 volts.

I turned on the turn signal and went back to the socket, but no current was coming through the wire.

The red light that illuminates when you open the door isn’t lighting, may be the bulbs.

I also pierced the wire on the turn signal to see if any power is coming thru the wire “no beep” on the voltage checker.

Please help
SPONSORED LINKS
Wednesday, August 16th, 2023 AT 1:02 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,375 POSTS
It sounds like the multifunction switch has gone bad. But to be sure let's test for power through it. here is a guide that will help and the brake light and blinker wiring diagrams so you can see which wires to test and how the system works.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

this guide may help as well:

https://www.2carpros.com/articles/brake-lights-not-working

Here is how to replace the multifunction switch in case you need it. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Wednesday, August 16th, 2023 AT 4:41 PM
Tiny
ALSTON RAASCROCK
  • MEMBER
  • 3 POSTS
I got the bulbs working again, thanks to you.
Was this
answer
helpful?
Yes
No
Monday, September 4th, 2023 AT 7:02 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,375 POSTS
Way cool, can you tell me what the problem was?
Was this
answer
helpful?
Yes
No
+1
Tuesday, September 5th, 2023 AT 10:42 AM

Please login or register to post a reply.

Related Turn Signal Not Working Content

Turn Signal Problems
GUIDE
Turn Signal Problems
Turn signals are intended to help inform surrounding drivers of the vehicle's intended change in direction. Although there are a few different causes for signal failure...
VIEW MORE

Sponsored links