central locking w126 500 sel

[amg500]

hi my central locking is only working from my boot with key........and only locks drivers door on with the key....... think the pump is in the boot ??but why is it only locking doors,, boot and petrol cap from boot????

any idears please..

 

[television]

The fault could be that the PSE pump has failed, and or the switch in the drivers door handle that needs to be cleaned I will post back more info later