Question about 1999 Jeep Grand Cherokee

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After i changed the battery, my 99 jeep grand cherokee wouldn't stay running. now it won't do anything....light on dask with a key symbol with an X thru it...

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  • Terry Apr 28, 2010

    it has no lock on the rear hatch. the battery went dead while i was on a 3 week trip. i took the battery out and replaced it with a new one. then the truck would start, run a few seconds then shut off.... finally i get a light on the dash that has the synbol of a auto ket with an X thru it and now it won't try to start at all.....

  • Terry Apr 28, 2010

    tried the driverside door lock 7-8 times. still won't crank. dealer wants a min. of 250.00 to fix it. gotta try to do it myself.

  • Richard Scordino May 11, 2010

    And the drivers door has no lock either? If it does did you try it? If you don't have any luck, call a dealer ...there may be a different way to access the security system on yours.

  • Richard Scordino May 11, 2010

    Try locking and unlocking the drivers door using the key. If nothing, try again same thing, tailgate lock.


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I have a serious dislike for any system that is not user friendly. Though the system does prevent many thefts, it also causes problems like yours, that make $ for the dealers for no real reason.
Though the older systems did work as I outlined, the ones with a chip in the key do not.(from my research, it seems like the key is like a small flash drive that serves as a removable part of the computer) Supposedly all are different and cannot be bypassed, unlike many GM cars that use a resistor that can be installed as a bypass. Therefore, 'though you don't want to, it seems that a visit to the dealer is your best option.
One thing I'd try first is attempting to start the engine twenty times in a row. This was mentioned as how the system is armed when the car comes from the factory.
Also, if you have a different key, I'd also try using that one.
When I replace any battery on newer vehicles, providing it is not "stone dead" I attach another battery to the cable ends via a small version of jumper cables (normal house wire with clip ends) Attachment is same as using large cables. When using this, I cover the ends with a short section of an old heater hose as a "sock" to keep from inadvertently shorting to ground. This keeps the system from dropping out while you are working. I have seen ones for sale that plug into a cigarette lighter but they wont help unless the lighter is "hot" with the key off. (they use a 9v battery)
Though this won't help you now, it may in the future. Hopefully some computer guy will figure out a bypass that's permanent so all of us aren't at the mercy of these people!

Posted on Apr 28, 2010

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