Mercedes 1995 S320 Weird set of problems

My 1995 S320 suddenly developed these problems ? all at once

1 Central locking does not work with key or remote or inside lock switch on console 2 When you open trunk the small lift handle does not pop out 3 When you open the front door ( or others) the foot lights do not come on 4 No rear seat light operate and no trunk light 5 When you turn on the rear reading lamp it turns on the front overhead console lights adn not the reading lamp 6 When you turn the engine off the key buzzes without the door being open 7 Sometimes there is a stuttering sound from the starter when you start the engine 8 The front center console light stay on after you manually turn them off for a short period as if you had opened the door and closed it. 9 There is a clicking noise in the right glove box area sort of a relay sound 10 The right front door is not closing very smoothly at the 2 normal hold open areas and is a little noisy Any ideas from anyone. My mechanic seems flustered.