First try some Caig Deoxit into the gap between the rocker and casing of the switch. Spray, wiggle switch many times, repeat. If that doesn't do it, the console wood has to come off. Basically you remove the ashtray, remove the ashtray frame (2 screws), remove the panel bewteen the ashtray and console wood (if there are seat heater switches, I've never had to deal with that), then pull forward and up on the console wood. No need to remove the console wood completely.

Sixto
95 S420
87 300SDL