Hi everyone,have just upgraded to 2002 td5 from 93 v8 disco.My owner trainer is complaining that when she unlocks it using the buttons on the key fob,the back door will not unlock even though the button pops up. Then 15 minutes later it works. Just wondering is there a simple fix for this.We have put up with the old disco and all its idiosyncrasies in the central locking,but the back door was always fine.This one is a pain because its hard to get the shopping and all the kids crap into the back of the car!Thanks.Steve.