Need help 2018 F250 electrical problems
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New User
Joined: Mar 2022
Posts: 3
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Need help 2018 F250 electrical problems
Just bought this used 18 F250 . Here’s a list of what doesn’t work
Telescope wheel
Power extending mirrors
External lights on mirrors
Power sliding rear window
Power seat switches are inverted
Heated Seats
Turn signals double click but no bulbs are out
I don’t think the auto climate fan is working…
not sure what’s going on. Any help or leads to what to do ?
Telescope wheel
Power extending mirrors
External lights on mirrors
Power sliding rear window
Power seat switches are inverted
Heated Seats
Turn signals double click but no bulbs are out
I don’t think the auto climate fan is working…
not sure what’s going on. Any help or leads to what to do ?
Lead Driver
Joined: Oct 2014
Posts: 5,941
Likes: 1,355
From: NY/Canada border
Strange as it sounds check the notorious plug under the truck up near the spare tire. I had one of those cause all kinds of havoc with window switches, the stereo, turn signals and I don't even remember what all else.
This was on a new 2017. The plug had gotten water intrusion and a dealer replaced it under warranty.
This was on a new 2017. The plug had gotten water intrusion and a dealer replaced it under warranty.
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
I'd start with all the related fuses and relays making sure they are all good. And if this is a recent rash of problems, I would have the batteries checked. Low voltages and these trucks don't get along.
Fleet Mechanic
Joined: Oct 2012
Posts: 1,830
Likes: 253
From: NorCal
Inspect, clean with electrical cleaner and assemble with electrical grease. check every connector at the rear spare, bumper etc. Its where I would start. Then work my way towards the front, fuese, relays. Pop the door sill plates check for water intrusion. inspect, clean and grease those connectors.
Good luck
Good luck
Tuned
Joined: Oct 2006
Posts: 449
Likes: 40
I'd get the wiring diagrams and start looking for what is common between all the issues you are having. Look at power, grounds and data network signals. A scan tool may be a help, but a probe that can test power and grounds is likely to be more help along with a meter.
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