After changing the battery I lost the radio code and I don't know the number as I bought the Jaguar second hand

You have to contact a Nissan dealership.

I had to change the battery in my 1999 S-Type, you will need the radio code, I also needed to reprogramme the board computer which is easy if you have your manual at hand, also the car might act strangely for a while, but this is explained in your users manual, nothing to worry about.

qyes usually u can call the jaguar dealership and give the last 6 digits of your vin and they normally will just look it up.it will be a 4 digit pin.

Simple contact you local Jag dealership and ask them, they will need the VIN No and there is a small charge (about £8). Then follow the instructions on http://www.bluejag.co.uk to enter code.

Procedure:

01. Turn the ignition ON (The radio displays LOC)

02. Hold down the Radio Presets 2 and 3 buttons for six seconds

03. The radio display changes from LOC to a three-digit number. Write this number down. Don’t take forever, fifteen seconds max before the next step.

04. Press the AM/FM button

05. The radio display changes to another three-digit number. Write this number to the right of the first one.

06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05

07. Call 1 800 537 5140

08. Press 1 then # (pound). You’ll hear “Invalid Code, try again”

09. Press 139010 then # (pound). You will be asked to enter your four or six digit code followed by * (start)

10. Enter the number from STEP 6 then * (star)

11. Listen to the four-digit number and write it down. It will be repeated twice

12. Turn the ignition ON (The radio displays LOC)

13. Use the MN and HR buttons to enter the code from STEP 11

14. Press the AM/FM button. The radio display changes to SEC Your radio is now “un-locked” and usable. The Theft-Deterrent feature is STILL active! If you want to disable it, use the instruction on page 3-27 in your Y2K Owner’s manual. Use the code from STEP 11 instead of your personal code.


This tip originated from LOTZAHP

Check for a sticker with the radio code inside the glove box. Some dealers fixed a second sticker in the owners manual. If not available, get the code from a Honda dealer, and be prepared to show VIN number, and proof of vehicle ownership.

if you ring a jag dealer with the reg or vin num
they should be able to give you the code if its the original unit

look under your hood on at the top there should be a four digit code

Check the driver's manual for the code. Sometimes it's on a card that is in with the manual. Put in the code with the numbered buttons on the radio and the radio will work again. This is to prevent theft.

radio code does not finish. only three digits entered, then wait comes up....code from jaguar main dealer
jaguar xj 6 4cc 1997