I have a similar issue, apart from mine appears to extend to the rear doors too - the boot appears to lock and unlock ok.
So far i've disconnected the battery, fully charged it and re-connected it, no difference. I pulled fuse 12 out, all seemed fine.
I can hear a click from the drivers door and driver rear door, and no clicks from either door on the passenger side. Odd
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Did you get anywhere with the garage? Was it a fault with the actuators after all?