wont start theft blinking

Discussion in 'Electrical' started by chadmadd, Dec 11, 2011.

  1. chadmadd

    chadmadd Member

    Posts:
    7
    Likes Received:
    0
    Joined:
    Dec 9, 2011
    Location:
    ontario ca
    1999 expedition 5.4 l wont fire turns over theft light blinking fast called lock smith to re prog keys said the pats still didnt recig. the org keys he said it was some thing else but probaly to do with pats sys.i tried to connect an obd2 code reader to truck it said fail to conect .im at a loss if any one could help give me the items to do with pats or ideas going crazy as well as broke . thank you
     
    Last edited: Dec 11, 2011
  2. toms89

    toms89 technical advisor

    Posts:
    5,171
    Likes Received:
    420
    Joined:
    Mar 13, 2011
    Location:
    MD
    You cannot program new keys if the original pats keys are not recognized. You will likely have to take it to ford dealer. Maybe get ecu reflashed and pats keys reprogrammed.
     
    Last edited: Dec 11, 2011
  3. toms89

    toms89 technical advisor

    Posts:
    5,171
    Likes Received:
    420
    Joined:
    Mar 13, 2011
    Location:
    MD
    Just for your information. I have a sct custom programmer and inadvertantly lost my stock program when it locked up once during the flash process. I had not backed it up anywhere...opps. Anyways I was able to reflash one of my custom programs as the original and it would not start due to loosing the pats code. Same symptoms as yours. I was able to turn off pats in the program and I can start it now but pats still flashes and I get check engine light due to the lost code. My only option is to have dealer install original program and reprogram my pats keys. I was quoted a little over $100 to do this.

    There is the possibility is your pats system outside the ecu is malfunctioning but the dealer should be able to diagnose this.
     
    Last edited: Dec 11, 2011
  4. chadmadd

    chadmadd Member

    Posts:
    7
    Likes Received:
    0
    Joined:
    Dec 9, 2011
    Location:
    ontario ca
    thanks for the info i plan on going to the ford dealership ,im wondering if the obd2 reader not linking up to trucks computer could also be part of the prob. i knoe pats is diffdeal but do you think the problems could be related like the obd2 couldnt read so the pats couldnt be re programed the locksmith didntsay about it
     
  5. toms89

    toms89 technical advisor

    Posts:
    5,171
    Likes Received:
    420
    Joined:
    Mar 13, 2011
    Location:
    MD
    Im sorry but I am not clear on the sequence of events. If your original keys stopped working for whatever reason new keys cannot be programmed. The original proper code has to be received before the ecu will allow a new key to be programmed. Keeps just anybody from programming their own keys to take your vehicle. If this is the case there is nothing the locksmith could do. Its possible the ecu locked out the reader in this case but not sure.
     
    Last edited: Dec 11, 2011
  6. chadmadd

    chadmadd Member

    Posts:
    7
    Likes Received:
    0
    Joined:
    Dec 9, 2011
    Location:
    ontario ca
    thanks alot for the info ill let everyone know what ford says thanks again
     
  7. chadmadd

    chadmadd Member

    Posts:
    7
    Likes Received:
    0
    Joined:
    Dec 9, 2011
    Location:
    ontario ca
    went to ford and they said tow it in and for $90. we will let you know whats up. so i think im gonna try another ford cert. mech. i let you guys know how it gose and what the prob was
     
  8. JUST4FUN

    JUST4FUN Admin Staff Member

    Posts:
    1,943
    Likes Received:
    56
    Joined:
    Oct 25, 2005
    Location:
    Mokena Il
    if your not linking up check to see if the cig lighter works if not replace the fuse and try it agian. ecm and the cig lighter is the same one
     
  9. Explor2Exped

    Explor2Exped Full Access Members

    Age:
    30
    Posts:
    701
    Likes Received:
    1
    Joined:
    Mar 29, 2011
    Location:
    Nashville, TN
    I've had this same problem before...

    All I did was disconnect the battery & let it sit unconnected for about 15mins. Connected it back then started right up.

    Sometimes it would randomly do this & i would just get out, walk away, then come back few minutes later & the theft would stop.
     
  10. chadmadd

    chadmadd Member

    Posts:
    7
    Likes Received:
    0
    Joined:
    Dec 9, 2011
    Location:
    ontario ca
    man i wish i had that luck .i did check the cig fuse and its good . i do remember i was hooking up another radio since the last one was stolen. i had the key turned to the on pos. for probably 1 hr. or more while looking the constant and ignition hot . that was it nothing shorted that i saw .so im wondering if the key being on would cause this issue.the code reader obd2 still wont connect to truck computer .i checked voltage on trucks obd2 power is there in two spots .if the obd2 isnt conecting i wonder how the lock smith was able to try and fail at program keys ? food for thought if any one can contribute or add it would be appreciated thanks again one frustrated family .
     

Share This Page