1996 Jeep Grand Cherokee Logo
Posted on Aug 31, 2010
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Hi,immobiliser problem?battery went flat,,managed to disable alarm on the fob,recharged battery,put new batterys in fob,ok for 2 days,fine in morning wouldnt immobilise in afternoon,put good second battery on,fob wont immobilise but have power?is it auto electrician time? thanks

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  • Master 4,102 Answers
  • Posted on Aug 31, 2010
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Hi it sounds like you have done everything you can do, it now looks like your going to need to get the immobilizer reset, this can be done at most garages but its best if you shop around to see the best price you can get as its not cheap.

have you tried locking the door with the key and then opening it with the key then try the car see if it will work.

failing that its going to need the imob re-programming so that it accepts your key fob, it may just be that you need the fob replacing as the chip inside could have failed they will be able to test all this for you.

let me know if you need further assistance, not that theirs much more i can do without being their with the equipment to test the immobilizer, hopefully it will just be the fob that needs replacing.

you could just try one last thing when you get in the car and put the key in the ignition try holding the fob as close as you can to the ignition barrel as this is where it picks the signal up from so try holding it close to their and see if that then lets you start the car

failing that its going to be a trip to the garage.

plz rate this solution as i have a whole page of unrated posts, thanks

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Spelling was fine, along with grammar and punctuation-you should see some of the mangled illegible questions we have to decipher, or try to!

But thanks for the follow-up on your problem and the solution. Who would have thought was just the battery? Responses like yours are great encouragement to keep going.
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Hi, i had this problem with my 96 model.. i let the battery go flat, then recharged it.

Although disconnecting the battery my work.

Assuming that the batteries dont need replacing in the fobs.
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