How to reset system of a F150 - after ignition left on on all night.

Asked by Sep 16, 2015 at 03:46 PM about the 2008 Ford F-150 STX

Question type: Maintenance & Repair

Ignition left on all night - truck would not start.  Recharged battery - truck starts but all dash gauges not working.  Truck has full tank of gas but dash readout says "0 miles to empty"  FYI - truck only has 20,000miles.

3 Answers

96,655

You can try disconnecting a battery cable, turn on the headlight switch for at least 30 seconds, then turn off the headlights and reconnect the battery cable, this may cause the anti-theft to activate so be sure you know how to turn it off before disconnecting the cable. This will reset the ECM back to factory presets, so it may drive a little strange for the first 20 or so miles until it relearns the vehicle and hoe you drive. If this fails to make everything work as it did before then you will have to go to a dealer and have the system reflashed, there may also be a software update that the dealer will do at the same time. HTH

Best Answer

Thank you tennisshoes - your instructions / solution worked - all gauges are working ! Have not driven the truck yet - it starts and runs OK. alpo5050

96,655

That's good news, remember it might not run as it did until it relearns, so when you start out make sure you have enough time to complete the relearn cycle, try to do some varied driving. Glad it worked.

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 195,043 nationwide F-150 listings starting at $290.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 8,480
#2 dandyoun
dandyoun
Reputation 4,420
#3 tennisshoes
tennisshoes
Reputation 2,940
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,911 Great Deals out of 182,352 listings starting at $1,595
Used GMC Sierra 1500
779 Great Deals out of 68,588 listings starting at $1,800
Used Dodge Ram 1500
390 Great Deals out of 10,840 listings starting at $1,000
Used Ford F-250 Super Duty
320 Great Deals out of 44,646 listings starting at $1,450
Used Toyota Tundra
461 Great Deals out of 34,661 listings starting at $2,500
Used Toyota Tacoma
522 Great Deals out of 43,037 listings starting at $1,995
Used Ford Mustang
692 Great Deals out of 44,965 listings starting at $750
Used Nissan Titan
167 Great Deals out of 18,986 listings starting at $3,000
Used Chevrolet Colorado
242 Great Deals out of 27,196 listings starting at $1,000
Used Chevrolet Tahoe
579 Great Deals out of 32,753 listings starting at $1,500
Used Ford Explorer
901 Great Deals out of 65,282 listings starting at $799
Used Ford Ranger
172 Great Deals out of 5,623 listings starting at $1,200
Used Ford F-350 Super Duty
357 Great Deals out of 24,367 listings starting at $3,000

Used Cars For Sale

2014 Ford F-150 STX For Sale
3 Great Deals out of 29 listings starting at $12,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.