interior light does not come on when any door opens
 

I the interior light use to come on for a few seconds once I opened and closed the doors but now it only comes on when I switch it on above the mirror.
Any suggestions would be appreciated.

your swtches could all be flakey...I went through the same thing last year on my W116, they would work if you fiddles with it when doors were open...switches were like $5.00 each...cured my problem...

Try jiggling the door switch and see it they come on.

Model would help here, as many have a switch position feature that keeps the door lamps from coming on.. it is just you may have it set to this feature/setting . but I do not know for sure b/c you have not included a chassis/model .

well I'd see the sense in that but it does it with all 4 doors not just one

thanks it is a 1984 300 TD chassis 123

Very Good.. you do have that feature, so I would look and see if the switch has different positions .. they usually can be felt as they click in to each setting. Try each setting and then open a door..
The feature is for those who do not want the interior lamps to come on when opening any door.

Mine did it on all four doors as all 4 switches were equally flakey....

As Arthur says, there are three positions to that switch, always on, always off and on when the door opens.

Len

and if its on the right setting wiggle the switchs...........if even one comes on that way you found the problem.

Thanks. I have tried the 3 positions and that did not work. Any other suggestions?

thanks

Manny

I have tried wiggling the switch as well and still no cigar.....

is the bulb burned out? and is it getting power at all? It should come on in one of the three positions regardless of any other issues...

You may have a bad delay relay in the Dome Control module. that is in the door/light delay circuit. It is fused , so try the fuse box for power.

yes it comes on but just on the position that just lets you turn it on but not with the doors open...

thanks

manny

I was just going to start a thread about the same subject and will just add here. I have a 1994 E320 and the dome light doesn't work anymore with the drivers door only, all other door switches work nornally, along with the dome light this switch seems to run the key buzzer and lets the power seat have power if the engine is off. I have jumpered the switch and it is OK, is there a relay? I can't find any bad fuses and the dome works fine anyway. Thanks for the help.

Dan