I have a 1996 Jaguar XJS 2+2 Convertible. Car was on alarm with Red Console Light Flashing all normal. Then Remote Transmitter Lock/Unlock Device doesn't work. (Battery or?). Followed the Emergency Alarm Disarm Instructions in Jag Security System Manual. Full Alarm didn't go off, but Red Console Light is now "on" solid and the Car won't start. Car is somehow locked out from starting.
Suggestions???

 

Hi John

Although I have not had this problem myself the very first thing that I would do, would be to put a new battery in the Key Fob.

If that doesn't work, then you could try disconnecting and re-connecting the Cars Battery, which either may or may not re-set the Car Alarm/Immobiliser.

Then try the key again.

 

Battery in the remote FOB is not the problem. According to Jaguar's Security System Manual for my car, disconnecting and reconnecting the battery before disarming the Alarm will just reset the Alarm.


What I did "that worked" was to manually lock and unlock the Car using the Driver's Door Keyway say 6 times. Then go into Car and turn Key "on" to position 11 (2) without trying to start the car.
Wait a short time and the Red Alarm light on Console went "out" and I could the start the car

 

Does anyone know how to change the programming on a 96 XJS alarm to make it auto arm after 30 seconds? My old alarm did this (Dealer programmed it when new, but they won't touch it anymore) but has since died and the used one I got isn't set to do this.

Thanks,
Steve

 

Steve. In the '92 - '93 MY there are 2 yellow wires right side of the trunk, behind the rear light near the alarm module. these need to be plugged together. Not sure about your MY.

 

I'm certain that's not related, due to the different year models, AND the fact that it worked on the other module, so if they did need to be connected to function, they would have been already, no?

But thanks for the thought. I will now go dig through the harness and look for those wires! Maybe they were pulled loose.

 

They are not plugged together as standard. but easy to do if you want that option. Again '92 -'93