Oh yea forgot to mention no light also. Batteries are good. Could it be a security module or door lock module?. My door lock cylinder will turn to lock but won't unlock?

 

How do I check what number fob I need?

 

what do you do to get the car in to learn mode im still stuck at that i reckon i have the correct fob

 

Thank David, this one worked for my 2002 XJR:
And another one:

Key in ignition without turning to any position.
Hold turn signal stalk in the flash to pass position, pulled towards you.
Turn key one position while holding the stalk.
Flash the stalk 4 or 5 times and you should hear a confirmation tone from the security sounder. It is not the horn, and in an area with high outside noise levels you may not be able to hear it, it is rather quiet.
After the tone press any button on the remote you wish to program and you will either hear a similar tone confirming programming or a different sounding error tone meaning that the programming did not work.

If you did not get the initial tone confirming programming mode there could be either a problem with the security module or a problem with the procedure.

The flashes after turning the key require a certain amount of feel. Very rapid or very slow flashing will not work. The 4 or 5 flashes should take a second or 2 not rapid fire.

 

Just goggled for you. And found this.

Fob Programming Instructions:
Jaguar Keyless entry key programming instructions - ProgramKeyFob.com

 

In programming the new fob looks like you need the lj......and not what you have....mine is a 2000xj8 long.....just received a purchased fob from e-bay....which i need to program....my question is, in programming the new fob.....do i( or you for that matter) have to do anything with the other fob that came with the car and currently use? wILL ATTEMPTING TO PROGRAM THE NEW FOB SCREW UP THE OLD?

 

Jagjunky....if you trace back a few postings you will see that you need both or all (depending on how many you have up to five fobs) available while coding.
As it all involves a series of clicks up to five, you need to press the first fob twice and when coding the second fob it needs to be pressed three times.....as I see it.

 

PROGRAMMING

Pull the headlight stalk towards the steering wheel and hold the headlights in the flash position.
Insert the ignition key and turn to the first position (to power the radio but not the ignition).
Release the headlight flasher and then flash the headlights four times to put the car in programing mode. The little red light to the left of P on the gear shift will briefly illuminate after the fourth flash.
Press any button on the key fob. With each press the same red light will briefly illuminate. You may have to hold the button in for a few seconds before the light flashes. This needs to be done 5 times to complete the job. Up to five fobs can be programmed. If you only have 1 fob press the button five times, if you have two you could press the button 3 times on one fob and 2 times on the other etc. If you don't get the red light you have a dead fob or perhaps just one dead button.
Remove the ignition key to complete the cycle.

CLEANING A DEAD FOB

Use a small flat blade screwdriver to prise the fob open.
Remove the circuit board and clean the button connecting surfaces which are gold plated metal on the circuit board and a carbon pad on the rear of each button. You will probably see black carbon deposits (which could cause a short circuit) between the thin gold contacts One internet source suggested using the rubber tip of a pencil eraser. I used cotton buds impregnated with 'Comma Contact Clean' before switching to dry buds. This worked a treat. Insert two CR2016 flat batteries with the smaller diameter flat surface facing the circuit board.
Reassemble.

 

just done this with mine and worked a treat, now have remote working

thanks
mark

 

did you say the xj8key fob has TWO batteries?
How are they situated?
Thanks, C Moses
1998 xj8

 

the key fob for 1998 xj8 has ONLY ONE BATTERY the number is CR 2032 someone had put two batteries in my key fob ( just bought car)I took them out put this one in reprogrammed fob works perfect

 

My 1998 (97 built) XJ8 has TWO batteries... As factory says... And handbooks...

 

Good info. here.

 

The FOB definitely needs TWO batteries (at least for my 1998).

I tested with both the one thicker, and 2 slimmer ones.
Both works, but the range with just one battery is rather limited, while with two batteries, I got some 15 meter, perhaps more.

By the way; clean the contacts with just a simple pencil-eraser.
It improves the FOB operation incredibly.

 

try your key fob using this one battery cr 2032 mine had two batteries in when I bought the car 4 weeks ago they DID NOT WORK was told by a mechanic to take them out and put this onemail battery in when I put it in worked perfect

 

XJ X350 4.2 with sick fobs, Oh dear bring back "hot wiring" can't stand this "intelligence" malarkie.
Both of my fobs gave up the ghost simultaneously and having read the advice on resetting (akin to War & Peace in effort) I have failed to to get them to work again, I have left doors open, flashed lights & listened for non-existing beeps, all to no avail. The keys still operate and I can drive the car but have lost the cache of opening the car remotely.
So maybe I will have to prostitute myself and get fleeced by the "Jaguar" agent, who can empty a bank account quicker than an ex with attitude.
Any advice gratefully received.

Greytop

 

Followed these instructions (I only have 1 FOB to program) I get the tone every time I hit the remote's button, yet still doesn't work afterwards ?! Every X308 I've owned has been slightly different programming(even if listed as the same year) lol.

 

This Jaguar owner made an excellent videotutorial. I can't watch it now because I am at work but as far as I remember, he said you have to flash the high beams 5 times.

 

I just wanted to let everyone know that the Ford Keyfobs available online work on our cars perfecectly.

 

Oh that looks interesting. I will try it tomorrow to see if it works. I have the same problem, replaces the batteries and then nothing on both remotes.

Funny part is before I switch the batteries. every time I was knocking the car with the remotes. the seat, mirrors and steering wheel will reset their positions.