Light Out warning?

[PeteH]

Hi

2009, Rapido On 3L V6 Auto, Sprinter Base. I have a "tail light" error on the dash comes up when I switch the side (and head) lights on. All the lamps check out as working, but the error light remains. I have consulted several Mercedes online "forums". And suggestions range from mismatched lamps, to wiring faults.

So far I have removed and replaced the lamp (standard twin filament 21/5 Pilot and Brake) despite the fact the O/E lamp was not actually faulty. I still have this issue.

It is annoying rather than anything else, as I know I have a full working light set from physically examining the M-H when lit. and I can switch the error off on the steering wheel by cancellation, (it returns next time I fire up).

Any one come across this before?. I suspect it MAY be an earth issue, but finding and cleaning "earthing" points is a long and tedious job. So before I go that route I wondered if anyone had had the issue and a solution.?

Pete

P.S. The only other time I have seen this was many years ago on a Merc; Truck!!.

 

[BwB]

Have you changed any of the bulbs for LED ones recently?
or
This sort of thing can be a bad earth. Take all the bulbs out, clean off the contacts (bulbs and sockets) and stick them all back in and try that.

 

[mitzimad]

probably talking rubbish here but could you use a long fly lead with a croc clip to add a known good earth to each light cluster in turn to narrow it down

 

[tonyidle]

The first earth point to examine is the connection common to all rear lights, or all rear lights on each side of the van. Check also for a failed numberplate light - easily missed.

 

[PeteH]

Re-Check, this am, shows failed Number plate light Fitting. (Bad Earth). All fed from LH lighting!. I am certain it had been On when I last looked, But????. Repaired the fitting and now OK.

Whilst on this I found 3 of 5 High level brake lights out (tiny little bulbs) When I tried the replace them they broke in the fitting. Have bye passed the Existing lights, with 2 strips of LED`s. Works a treat!.

Thanks guys for input.

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[cranky]

that's why we love this forum , there is always someone to help