Can anyone tell what this light bulb behind the dash is for?
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Super Member
Joined: May 2002
Posts: 540
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From: Suburban Washington DC
1995 S280 5-speed
Can anyone tell what this light bulb behind the dash is for?
I took the instrument cluster out on my '95 E320 to install chrome rings and when I went to put it back in the car I found this one extra bulb that doesn't fit anywhere on the back of the cluster. It's much bigger than all the others. Anybody know what it's for?
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Joined: Mar 2011
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88 W124 300CE
Looka lot like the one I found but it was the warning light (last socket on far right) for problems in the headlight/interior light circuit. Had been deliberately left out as it was receiving a "low voltage" signal and therefore illuminated all the time.
Are you positive it doesn;t fit into the bottom row of indication lights ?
Are you positive it doesn;t fit into the bottom row of indication lights ?
Thread Starter
Super Member
Joined: May 2002
Posts: 540
Likes: 39
From: Suburban Washington DC
1995 S280 5-speed
Positive. Look at the scale next to the ignition switch. The sockets in the cluster are no bigger than a pencil eraser, this one is probably over 1/2 inch diameter.
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Joined: Mar 2011
Posts: 555
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88 W124 300CE
Run a check of illuminated points by turning headlight switch on.
Check areas like "headlight surround panel. I haven't pulled that area off myself but that's a fair size panel that is illuminated from behind so that the images all show up.
Is there much cable attached - if not I would suggest it's in that general vicinty. Is there an interior footwell light in your model perhaps that shines down.
Try to work out when it illuminates - ie when getting in, when ignition is on ? etc
That should help boil it down
Check areas like "headlight surround panel. I haven't pulled that area off myself but that's a fair size panel that is illuminated from behind so that the images all show up.
Is there much cable attached - if not I would suggest it's in that general vicinty. Is there an interior footwell light in your model perhaps that shines down.
Try to work out when it illuminates - ie when getting in, when ignition is on ? etc
That should help boil it down
