1999 xk8 convertible..When I now lock using remote the alarm is set but door not locking..help please! There is no button on the door. No clicking noise as before indicating the doors have locked. Have changed remote battery but no change. Car battery did get very low before this started to happen. Any ideas please?

 

If you post more details, you'll get responses. What year and model? When you use the remote, does the door lock button go down?
the more info the better !