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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Hi there: The 1996 Jeep Grand Cherokee Laredo Anti-Theft System is equipped with Vehicle Theft Security System (VTSS). VTSS system monitors vehicle doors, hood, liftgate and ignition. If an attempt is made to enter or operate vehicle without proper disarming of system, vehicle horn will sound, headlights, taillightsand parking lights will flash, and engine will be prevented from running.
The following wiring diagram and electronics circuit contains detail schematics of The 1996 Jeep Grand Cherokee Laredo Anti-Theft System. Here in you will find interconnection between electronics parts of the system such as body control module, auto headlamp light sensor. VTSS led, driver door module, passenger door module, cylinder lock switch, junction block, power distribution center, and grounding. HERE In you will learn also how the Vehicle Theft Security System works, removal, installation, testing and troubleshooting procedures.
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Switch ignition ON and OFF within 15 seconds. Using second programmed key, proceed as follows: Switch ignition ON and OFF within 15 seconds. Within 10 seconds: Immobilizer LED flashes. Programming mode activated (acoustic signal will be heard). Proceed as follows: Within 50 seconds: Insert first key to be programmed into ignition switch. Switch ignition ON and OFF. Within 10 seconds: Single acoustic signal will be heard and immobilizer LED stops flashing and illuminates for 3 seconds to indicate correct programming. Repeat complete procedure to program remaining keys. Keys can also be programmed using diagnostic equipment. NOTE: A maximum of 8 keys can be programmed.
Alarm Module Reset Procedure NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.
when you say "the immobilizer will not go off" that mean you can still drive the car or not,when the immobilizer goes on you can start the car but will not run, so what do you need a spear key for .you may need the valet key, is a gray key . I am professional car alarm and remote start installer so I deal with this kind of problems if you have any question email me email@example.com