Morning all, hope everyone is well and happy. My 90 has developed an issue. It used to lock/unlock all doors from the fob and the keys, however now it locks/unlocks both front doors but not the back door, it has to be manually unlocked with the key. Last weekend I removed the spare wheel and replaced all three hinges, but I'm certain this has nothing to do with it and have also replaced the fob batteries recently. Has anyone had the same issue? Thanks, Nick.