Thursday, 1 November 2012

How to replace the battery in a Jag X-Type Key Fob, and reprogramming the key fob

http://www.jaguarforums.com/forum/s-type-s-type-r-supercharged-v8-15/key-fob-battery-replacement-write-up-faq-54380/
NOTE: MAKE SURE YOU DO THIS SOON AFTER THE BATTERY DIES ON YOUR KEY FOB. IF YOU LEAVE IT TOO LONG THE MEMORY ON THE CHIP WILL BE WIPED, AND JUST REPLACING THE BATTERY IN THE KEY FOB WONT BE ENOUGH!!!
See the reprogramming information further down this page for the solution for reprogramming the key fob should this happen.

Replacing the battery

Here is just a quick write-up on how to replace the battery in the key fob. The only tool you need is a small flat head screwdriver.
First you can use the small flat head in this small tab to pull the fob into two pieces.

It should look like this after getting it apart.

Then taking the part with the buttons on it you will see a spot to use the flat head to start to work your way around to make that come apart into 2 pieces.

Once that's in two pieces you will see a small screw on the circuit board in the top left corner in the pic. The small flat head will allow you to unscrew this.

Then you will be able to pull the circuit board out and will allow you access to the battery.

Now you just use the flat head again to help pull the battery out and replace. Note: At this step I also used a cotton bud doused in some alcohol (Rum as there was some in the cupboard) to clean the contacts on the circuit board.

Once the new battery is in its just a matter of screwing the circuit board back in and everything else will just click back together. Now you have a fresh battery. You shouldn't have to reprogram the key fob it should just start working again if the battery was dead so just click the buttons to test. However if the battery has been dead a long while you will most likely have to reprogram the key fob.
Hope this helps some people out.

Reprogramming the key fob

Action:
To program the remote transmitter(s) without using Worldwide Diagnostic System (WDS), follow the procedure outlined below.
Note: When carrying out the alarm remote programming, ensure that
no other vehicles within a 50 meter radius are undergoing the same
programming procedure, as this could affect the programming
operation.
Note: All required remote transmitters must be available when carrying out this procedure.
1. Open driver's door using the metal part of the key.
2. Turn the ignition switch to the 'auxiliary' position, then turn the ignition switch to the 'ON' position and back to the 'auxiliary' position four times quickly (about one turn each half a second).
Note: A chime from the Generic Electronic Module (GEM) will indicate
programming status has been enabled.
3. Turn the ignition switch to 'OFF' position.
4. Remove the key from the ignition switch.
5. To program the transmitter, press any key within 10 seconds.
Note: If the remote transmitter has been accepted, the GEM will
make a chime.
6. If any other remote transmitters are to be programmed, press any button once on each transmitter within 10 seconds.
Note: A maximum of four remote transmitters can be programmed to the vehicle at any one time.
7. Close driver door.

4 comments:

  1. Did this tonight, and it worked a charm. Had to push the button on both key fobs to ensure that they both worked after step 5 of the reprogramming guide.

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  2. hi!How do I change the key chip?thanks

    ReplyDelete
  3. Hi my friend! I wish to say that this post is awesome, great written and include almost all significant infos. I would like to peer more posts like this.

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  4. Excellent - I'm now sorted.
    Thanks

    ReplyDelete

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