Some mothers do ave em don't they
1 Tv remote?
2 Topbox remote?
3 Video remote?
4 DVD remote?
5 Camera remote? ( rear veiw)
6 Caravan mover remote?
7 TV Aerial remote?
8 Statelite dish remote?
9 Doorlock remote?
10 Operators remote? oops slipped that one in.
Try disconnecting battery main power to the control box in otherwords take leads off the powering battery if mover, then wait 5mins re-connect then try remote. if not remove remote batteries for 5mins put them back then try, all failing, contact the manufacturer.
bob
May 2013