R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Headlight relay?

Old Apr 13, 2014 | 04:15 AM
  #1  
GreigM's Avatar
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R320L CDI
Headlight relay?

Hopefully a quick question. I have a 2006 R320 and recently have been having issues with one of my headlights (standard lights, not Xenon).

When I switch on the headlight it sometimes doesn't come on, soemtimes I can wait 20 secs or so and it will start working, and sometimes I can see it flickering while driving along. Once on I can generally shake/move the headlight unit with no impact, so I don't think its a loose connection in the unit itself.

I've changed the bulbs and there is no difference, and in any other car I'd be looking to a sticking/faulty relay next but can't seem to locate one - does the R class have a headlight relay?

Any other suggestions?
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Old Apr 15, 2014 | 02:23 PM
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R500
Your user manual should have a layout for the fuse box. There are a number of relays in there
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