I have a 2006 s type jaguar the remote control does not work and the inside trunk release button does not work also.

Check your owners manual, there is usually a manual cable inside of the vehicle to release the trunk for just such an instance.

When you press the trunk open button, do you hear any "release" noise come from the trunk area? The issue may be a bad battery in the key fob OR there could be an issue with the transmitter located inside the vehicle. Do the doors lock and unlock properly? is the vehicle equipped with security or immobilizer? please advise

Jaguar in their wisdom did not put an internal release for the Boot (Trunk) inside the car.

assuming the lock system is working :-

You will need to locate IP5 pin 16 on the General Electronic Control Module that sits RH side behind your instrument panel (UK Car) .
IP5 is the large brown 23 way connector that goes into the ECM module.
Take this pin to ground then your boot will pop open.

Check out http://www.bluejag.co.uk for general infomation on Jaguar X type.

If there is not a key lock release on the rear, or a manual release on the inside, you could remove the bask seat and go into the trunk that way. Another trick you could do is wire a 12v battery to a plug that goes into the cegarette lighter outlet. That would give you power to pop the locks.

Well don't feel stupid. You just explained my problem

you can charge the battery from the engine compartment. check your owners manual that is the correct place to jump and to charge the battery.

There is no release inside the car  if you go to the dealer  with proof its youer car they will order a key thats the easy way D

This is the procedure from the service manaul:

JAGUAR
XJ8 Remote Control Programming
1. Unlock the Boot/trunk with key.
2. Turn Ignition on.
3. Warning light on dash comes on.
4. When they go out, lift arm rest, inside their is a valley button, Press 5 times within 5 secs of lights on dash going out, Horn & Lights Flash.
5. Press any button on remote, remote programmed.

Try re-programming the remotes, here is the procedure for your car.
JAGUAR
XJ8 Remote Control Programming
1. Unlock the trunk with key.
2. Turn Ignition on.
3. Warning light on dash comes on.
4. When they go out, lift arm rest, inside their is a valley button, Press 5 times within 5 secs of lights on dash going out, Horn & Lights Flash.
5. Press any button on remote, remote programmed

Use the trunk open button in the clove box.