I thought Members might be interested in how to recode or reprogram key fobs (also known a plips). At least, this is the procedure for my series 1 Discovery TDI 2.5 Diesel. (My big black baby and I love her deeply, hopelessly...no stop it!).
I got the procedure from Land Rover and confirmed it on www.programyourkeys.com
This assumes you have one or two of the correct fobs with good working batteries (Batteries CR2016 3volts).
Ideally, you need three persons for this. One in the drivers seat with keys in the ignition; one at the driver's door with spare keys in the door lock and one at the front of the car to work the bonnet switch.
Start with the ignition off and bonnet open with the bonnet switch pressed down.
Then you have to complete the following sequence within eight seconds:-
1. Ignition on - ignition off.
2. Lock doors - unlock doors.
3. Release bonnet switch.
4. Ignition on - ignition off.
Then, if alarm is set the horn will sound and the LED light on dash (in the middle of the dash under the radio compartment) will light.
Now, the programming of the fob or fobs can begin.
Press and hold down the button on the fob until the red LED flashes fast.
Then repeat for the second fob.
When finished wait for the LED to stop flashing or the alarm will go off. (This advice courtesy of Member Grantc).
The dash LED will go out if both fobs have been programmed successfully.
If the second fob does not work, you have to do the first fob again and then the second fob again as part of the same sequence. In other words, if you want two working fobs you must program them together.
I had some worries about what would happen if the coding procedure was unsuccessful and if it would cause any permanent problems but I have had some advice from other members of the forum and have been told it is OK to simply go on trying until successful. In addition, I have today spoken to a Land Rover Dealer (through Land Rover UK) and have been told it is OK to go on trying until successful but to wait 20 minutes or so before trying again.
Hope this helps someone.