300 CD Outside Door Lock

[300CE]

The passenger outside door lock does not lock while using the key on the passenger side but does lock using the key on the driver side. The passenger inside thumb locking lever does not move unless the driver’s side thumb lever is in the locked position, then to both the lock and unlock positions. The driver side thumb lever does actuate the passenger side lock both direction, so the vacuum system working just fine.

So my question is, is there a connection between the key not working and thumb lever not moving independently from the drivers door? Is the thumb levers designed to work this way if not what’s the fix?