Hi Dave

I doubt if Adrian's suggestion would cause you any problems. I have disconnected the battery on my 2002 Plus 8 for a similar period of time(but not for this reason),with no ill-effects.

Is the battery on the PLIP (remote fob, but not key) getting tired ? Replacement of the battery (CR 2032 3V) in the Lucas 17TN PLIP worked successfully for me, using the instructions found on this page :

www.mgrovercodes.com/accessories

Both actions could be worth a try until there is a more authoritative response, but with a similar disclaimer to Adrian !

Andrew Green
2002 Le Mans 62 Plus 8