re activating door lock remote key pendant

Does any one know how to re activate the door lock remote control pendant after changing the battery

I believe you need to carryout a special procedure to reactivate the electronic code in the pendant once the battery has been changed

I have a 1997 Primera
And the pendant is a
Siemens 5WK4 782

Does any one know the procedure, currently my Nissan dealers want me to pay £90 pounds!!!!!!!! To change a battery !!!!!!
(they want me to buy a new unit, and I have two dead ones)


My e-mail is chrisherrington@hotmail.com


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