All central switches get light from a single source (a bulg that distruibutes light through a series of reflective cables that hook up on the back of each switch. The main bulb that provides the light for the central panel might be too old or burnt out and should be replaced. Panel bulbs age considerably and provide much less light than when new.

Your sun visor vanity mirror gets its power from the central attachtment at the ceiling (the one you unhook to move the sun visor to the side. Notice there is a couple o metal plaques that make contact to transfer electricity to the bulbs on the mirror. This plates, because of constant lowering of the sun visor, tend to warp and hence to not pass electricity correctly.

About the doors locking themselves after turning off the engine, I would recommend a licensed exorcist.

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A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]