Turn signals flash but no sound

Tiny
RROMAN5846
  • MEMBER
  • 2008 FORD EXPEDITION
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
Turn signals flash both outside and on the dash inside. Problem is they are no longer audible when activated inside the vehicle.
Thursday, December 12th, 2019 AT 9:09 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,878 POSTS
Hello,

It sounds like you have a SJB (smart junction box) that is going out. which is common. To be sure we can do CAN scan which is the future of car repair. you can get a scanner for about $50.00 on Amazon. Here is the location and how to replace it in the diagrams below:

https://youtu.be/InIlnsjOVFA

Check out the diagrams (below). Please let us know what happens.
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Friday, December 13th, 2019 AT 12:02 PM

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