Can anyone offer any advise on the title, my rear doors or fuel cover will not lock!!   I have done a fault check and the only faults to show are LEFT/RIGHT Cabin Heaters No Signal, in the (09) Central Electrics code B149F31 which is not showing anything on a search. The alarm still works, but the little red indicator light flashes rapidly for a few seconds then steady on for 30 odd seconds then resumes normal rhythm. My car is a 64 (2015 model) Vrs Tdi Estate, no other issue