New Jaguar owner here. I’ve searched through the forum and haven’t found what I’m looking for. I recently bought a 1991 XJ6 Sovereign with a factory security system. I think the module has failed because the marker lamps blink every 5 seconds or so when the ignition is off which eventually drains the battery. I’d like to remove the module and delete the security system entirely. Does anyone know where the module is and if it can simply be removed? I’ve looked all through the trunk and it’s not there. It’s also not anywhere under the steering column that I can tell. Any assistance would be most welcome. We’re fixing the car up and intend to raffle it off for charity at our show in June, but I can’t send it out like this

 

I took a 94 apart and as I recall the alarm module was under the driver seat. Could be same for 91?

 

Could the emergency flasher switch be on or the relay that controls that function be stuck? just a WAG!

Larry

 

No, it's definitely the alarm module. The previous owner disconnected the siren under the hood. If I reconnect it, I get a chirp each time the lights blink. Everything I've read points to the alarm module

 

Hi saabstory2003,

You can download the wiring diagrams for your XJ40. On the page before each schematic is a list of all the components and connections and their locations. I know the Security Module connects to the Central Microprocessor (CPU), which controls Central Locking. Hopefully the location of the Security Module is given somewhere in the Electrical Guide:

Jaguar XJ40 Electrical Guide 1991

I am attaching a few TSBs related to the security system.

Cheers,

Don