W124T interior courtesy lights

[peter01443]

Front interior light cluster works ok when front doors open.

Don't work when either back door is opened, and rear loadspace lights don't come on at any time - whether for open doors or tailgate. Bulbs are okay.

Is there an in-line fuse somewhere? Any other ideas.

 

[BlackC55]

Have a look at the interior light switch. You might find the problem there.

 

[bolide]

The rear four interior lights have three possibilities: off, on and switched by the rear doors and/or tailgate. If they don't work in any switch position I'd check both sides of the switch for volts or earth. I'd also check at the bulbs for a live feed. The door switches may light the bulbs by providing an earth or by providing a live feed - I don't know which but it'll be pretty easy to find out

If a combination relay is used for this then I'd suspect the relay before anything else

Nick Froome
www.w124.co.uk

 

[peter01443]

Ummm??? Embarrassed of Wales here. Put the dash switch to the "on" position and they all work as they should do!!!! "Thick as a Ditch" saying oops!