Need help figuring out a problem

Discussion in '3rd Gen - 2007 - 2017' started by RJameson, May 15, 2019.

  1. RJameson

    RJameson New Member

    Age:
    49
    Posts:
    1
    Likes Received:
    0
    Joined:
    May 7, 2018
    Location:
    Fairfield, TX
    I have a 2014 King Ranch Expedition. I bought it used with 65000 miles in 2017. A few months after buying it, I began to experience the following randomly, lasting anywhere from a few seconds to almost an hour. So far the dealerships can't identify the problem.

    The alarm will sound and I will get error messages alternately displayed: "Tire pressure monitor fault; Trailer brake module fault; Door ajar"; Brake light stays on; Tire pressure light blinks and then stays on; When these errors occur, my runners will not deploy, the air will blow but will stop blowing cold, and my backup camera will not work, or once my backup camera was displaying while I was driving forward.

    Does anyone have any ideas? This is very frustrating.
     
  2. TXFRDOwner

    TXFRDOwner Full Access Members

    Posts:
    121
    Likes Received:
    20
    Joined:
    Jan 21, 2010
    Location:
    Texas
    Sounds like your canbus network has gone haywire.

    Could it have been in a flood and they didn’t disclose that to you !!!


    Sent from my iPhone using Tapatalk
     
    RJameson and iimagine like this.
  3. jeff kushner

    jeff kushner Full Access Members

    Posts:
    1,435
    Likes Received:
    740
    Joined:
    Nov 30, 2014
    Location:
    Maryland
    Since electrical bugs are generally difficult to isolate, I would suggest beginning with the easy stuff. I would disconnect the battery and remove all the fuse and relay covers, remove, check, clean and reset each fuse & relay thereby eliminating a bad fuse/relay or bad contacts.

    At least it would be a start but smarter folks here might have better suggestions?

    jeff
     
    powerboatr and RJameson like this.
  4. richie

    richie New Member

    Age:
    74
    Posts:
    1
    Likes Received:
    0
    Joined:
    Aug 13, 2017
    Location:
    yorktown,va.
    You would be surprised at some of the problems a cheap cell phone charging adapter can cause and it is a simple thing to check out.
     
  5. CHRIS HODGE

    CHRIS HODGE Full Access Members

    Posts:
    79
    Likes Received:
    9
    Joined:
    May 6, 2018
    Location:
    Motorcity
    My charger messed with tire monitor system, replaced lighter with USB port, problem solved. Sounds like bigger issue with your truck, water being a possible cause, are seat frames rusted?
     
  6. stamp11127

    stamp11127 Super Moderator Staff Member

    Age:
    61
    Posts:
    5,818
    Likes Received:
    1,066
    Joined:
    Mar 10, 2012
    Location:
    Temple, Georgia
    All the electronic razzle dazzle of today is sensitive to voltage fluctuations or lack thereof. First things to eliminate would be battery condition & state of charge then the charging system. Battery voltage needs to be above 12.4 volts to be safe with engine off. With engine running you should see a charging voltage between 13.5-14.5 volts dc.
     
    powerboatr likes this.
  7. Trainmaster

    Trainmaster Old School Member

    Age:
    53
    Posts:
    1,318
    Likes Received:
    582
    Joined:
    Jun 17, 2017
    Location:
    Rockaway Beach, NY
    You may also try rebooting the thing. Disconnect the battery for a few minutes, short out the cables for a few seconds to discharge any capacitors that hold memory and hook it all back up.
     
  8. MuddySpokes

    MuddySpokes Active Member

    Posts:
    42
    Likes Received:
    15
    Joined:
    Oct 23, 2018
    Location:
    There & Here
    If the charging system and battery are good, consider getting some software that will see what the computer sees in real-time. Chances are good that the vehicle is complaining about something and it is just a matter of looking at the symptoms to start focusing on the likely culprit(s).

    As mentioned, flooding is withing the world of possibilities. Might consider running the VIN to see where the vehicle was previously registered and if there were any significant weather events in that area.
     
  9. 1955moose

    1955moose Full Access Members

    Posts:
    5,882
    Likes Received:
    1,237
    Joined:
    Nov 23, 2014
    By law in all 48 lower states, and probably Alaska and Hawaii too. A seller has to report flood damage. That's not to say an unsavory individual won't try to yank up the carpets and every large area, and try to dry it out. You or a shop may have to do a little carpet yanking of your own. If you do find wetness, take plenty of pictures. Hopefully this is not your issue.

    Sent from my N9131 using Tapatalk
     
  10. bobmbx

    bobmbx Full Access Members

    Age:
    57
    Posts:
    890
    Likes Received:
    439
    Joined:
    Jun 11, 2017
    Location:
    Virginia
    Carfax works pretty good in determining where the vehicle has been, and when it was there.
     

Share This Page