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Electrical issues?

Tiny
DIAMONDSIGNS
  • MEMBER
  • 1998 FORD EXPEDITION
  • 5.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 240,000 MILES
Having a issue with stereo light stay on with no key in ignition, windows roll down with no key in ignition. Speedometer drops to 0 mph then shoots up to current speed.
Monday, January 4th, 2021 AT 3:53 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
This sounds like the battery saver relay is stuck on. To be sure let's use this guide with the relay location in the diagrams below:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Battery Saver Relay Behind left side of dash, on junction box fuse/relay panel. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Wednesday, January 6th, 2021 AT 9:43 AM

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