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

118,445

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 Mark helpful

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

118,445

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:

F-150

Looking for a Used F-150 in your area?

CarGurus has 199,220 nationwide F-150 listings starting at $1,300.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    10,830
  • #2
    dandyoun
    Reputation
    4,970
  • #3
    tennisshoes
    Reputation
    3,890
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,834 Great Deals out of 157,217 listings starting at $1,000
Used GMC Sierra 1500
828 Great Deals out of 60,509 listings starting at $1,495
Used Ford F-250 Super Duty
458 Great Deals out of 37,668 listings starting at $1,999
Used Toyota Tundra
462 Great Deals out of 37,891 listings starting at $1,750
Used Dodge Ram 1500
340 Great Deals out of 9,265 listings starting at $1,800
Used Toyota Tacoma
451 Great Deals out of 49,504 listings starting at $2,400
Used Ford Mustang
296 Great Deals out of 39,978 listings starting at $1,312
Used Chevrolet Colorado
278 Great Deals out of 38,935 listings starting at $1,500
Used Nissan Titan
227 Great Deals out of 21,958 listings starting at $2,995
Used Ford F-350 Super Duty
339 Great Deals out of 21,726 listings starting at $3,995
Used Ford Explorer
884 Great Deals out of 70,422 listings starting at $1,275
Used Chevrolet Silverado 2500HD
371 Great Deals out of 29,490 listings starting at $2,718
Used Chevrolet Tahoe
662 Great Deals out of 38,329 listings starting at $995

Used Cars For Sale

2014 Ford F-150 STX For Sale
33 listings starting at $12,500

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.