Open the driver side door.
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. *This must be done fairly quickly. If you have done it correctly, you will hear a chime.
Turn the ignition switch to 'OFF' position.
Remove the key from the ignition.
To program the transmitter, press any key within ten seconds. **If it worked, you should hear another chime.
Close the door.
Open the key fob and see what battery it contains.
Yes, you can buy a key fob for a 2017 Jaguar XE, but programming it typically requires specialized equipment or software that is often available only at dealerships or authorized locksmiths. It's advisable to purchase a key fob from a reputable source and then take it to a Jaguar dealer or a qualified automotive locksmith for programming. Attempting to program it yourself may not be possible due to the vehicle's security features.
To program a key fob for a 2000 Jaguar XK8, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Within five seconds, press and hold the "Unlock" button on the fob while simultaneously pressing the "Lock" button three times. After that, release the "Unlock" button and turn the ignition off. The fob should now be programmed; test it to ensure it functions correctly.
How do you program a key fob to a 2003 Chevy Malibu
To program any kind of key fob you have to take it to a dealership.
Ford Outcode/Incode Calculator +SW Dongle support older Jar but not newer
CR2032
How do I re program my key fob for renault laguna estate 1997?
To program the key fob for a 1996 Jaguar XK8, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Within five seconds, press and hold the "Lock" button on the key fob for about 10 seconds. Release the button, turn the ignition off, and then turn it back to the "On" position. Repeat this process for any additional fobs. Ensure the battery in the fob is fresh to ensure proper programming.
To add a new key fob, take the vehicle and the key fob to an authorized dealer. To re-program a key fob after replacing it's battery, open the key fob, then read and follow the instructions inside.
http://www.ehow.com/how_7456283_program-key-fob-harley-davidson.html
The key fob programing requires the dealer's scan tool.