Question about 1998 Jeep Grand Cherokee

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Interference to RKE, immobilizer activates, cannot disarm immobil

My ZJ Australian delivery Grand Cherokee Laredo suffers from RKE interference in some locations such as shopping centre carparks. The vehicle is switched off ,the immobilizer activates and because of interference the imobilizer cannot be disarmed using RKE. The RKE is rendered useless. The car can be entered using the key but when attempting to start engine the immobilizer cuts the engine. The only solution is to have the car towed clear of the interference, sometimes only 100 yards untill RKE becomes active again. This is a total pain in the *** and has cost me heaps of money and time. An Achilles heel to an otherwise comfortable and reliable vehicle in excellent condition.

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  • cart7 Jan 29, 2009

    Australian delivery vehicle has no alarm system only engine immobilizer. Rendering remote doorlocks inoperative by grounding wires does not disarm immobilizer. There is no purple/yellow wire in door harness nor is there a light green with orange stripe as another source has suggested.
    Thanx for trying.

  • cart7 Jan 29, 2009

    Australian delivery vehicle has no alarm system only engine immobilizer. Rendering remote doorlocks inoperative by grounding wires does not disarm immobilizer. There is no purple/yellow wire in door harness nor is there a light green with orange stripe as another source has suggested.
    Thanx for trying.

  • Richard Scordino May 11, 2010

    Unfortunately, most transmitters and recievers must allow a certain amount of interference. It is possible that yours is not sufficiently shielded, or outside interference is too great in the areas where you park. Personally I'd probably just disable the system (we opened our doors manually for a hundred years,) You may want to have your dealer check and see if sensitivity can be changed, but bering computer chip based, it's doubtful.



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