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

93,055

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

93,055

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

  • why is my battery dying over night if i leave key int he ignition 1 answer

    I have a 2013 f150 4x4 with 34,000 miles. I have installed 3 batteries in this truck. the first shortly after purchased. I would park the truck at night and it would not start the next morning carrie...

    2013 Ford F-150 XLT 4WD

    -

    Maintenance & Repair

  • My 1999 F150 left brake light doesn't work, can anyone help? 1 answer

    My 1999 F150 left rear brake light doesn't work. ALL other lights work; front/rear turns-parking-hazards-reverse-... plate-head light-fogs.... Literally every other light works, except my left brake...

    1999 Ford F-150 XLT Extended Cab Stepside SB

    -

    Maintenance & Repair

  • if your truck cranks but will not start, what would be the problem? 191 answers

    STARTING PROBLEM I have a 2000 ford f150 5.4L the truck cranks but will not start some times. if i spray starter fliud into the booster in will start up. but other times the truck will start then just...

    2000 Ford F-150 Lariat Extended Cab SB

    -

    Maintenance & Repair

  • Ford F150 Dash/Gauge/Cluster Lights coming on in the night, draining battery (Shift Assembly didn't fix) 1 answer

    This question has been asked, but my issue is a little different than (http://www.cargurus.com/Cars/... ) I replaced the console shift assembly and still have the issue. Any ideas? Here are my note...

    2011 Ford F-150 FX4 SuperCrew 4WD

    -

    Maintenance & Repair

  • Ford F150 stalling 1 answer

    I have a 1995 Ford F150 5.0 Mustang motor. I overheated this past Sunday when it was -7 degrees out. I tried to drive back to my house. Truck finally stalled and battery was getting no power. I c...

    1995 Ford F-150 XL SB

    -

    Maintenance & Repair

F-150

Looking for a Used F-150 in your area?

CarGurus has 206,316 nationwide F-150 listings starting at $1,499.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,940
#2 dandyoun
dandyoun
Reputation 4,360
#3 tennisshoes
tennisshoes
Reputation 2,790
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,716 Great Deals out of 175,751 listings starting at $1,250
Used GMC Sierra 1500
825 Great Deals out of 68,199 listings starting at $2,484
Used Dodge Ram 1500
453 Great Deals out of 11,152 listings starting at $700
Used Ford F-250 Super Duty
344 Great Deals out of 46,938 listings starting at $1,895
Used Toyota Tundra
444 Great Deals out of 34,312 listings starting at $2,700
Used Toyota Tacoma
542 Great Deals out of 40,814 listings starting at $2,495
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Nissan Titan
170 Great Deals out of 19,555 listings starting at $3,000
Used Chevrolet Colorado
217 Great Deals out of 24,313 listings starting at $2,495
Used Ford Explorer
946 Great Deals out of 72,518 listings starting at $1,000
Used Chevrolet Tahoe
549 Great Deals out of 29,234 listings starting at $1,699
Used Ford Ranger
197 Great Deals out of 5,805 listings starting at $1,650
Used Jeep Wrangler
277 Great Deals out of 18,163 listings starting at $2,950

Used Cars For Sale

2014 Ford F-150 STX For Sale
6 Great Deals out of 48 listings starting at $11,995

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.