My 1989 xjs has been laid up for while and now the central locking will not work. I believe there is a battery to replace in the central locking control unit but I do not know where this unit is located. Can you please help? Thank you

 

It has ?? The only extra battery l can think of sits behind the right rear light. And is for alarm backup. But that's not been available for hundreds of years now.....

 

Thank you, but do you know where the central locking remote receiver is located?

 

This might help. . . .
https://www.jaguarforums.com/forum/x...how-faq-22274/

Mines a 92 and is different.