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Any Merc Technicians out there ?

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John T:
I'm having a bit of trouble with my ML 270cdi  :cry:

The heater plug warning light was coming on, so I've swaped all the plugs for new ones and it's still coming on.

I read somewhere that it will be the timer/relay for the plugs.

Problem is.... Where is it ??  :?

BrumLee:
It's been a long time since I worked on Merc light commercials (Sprinter, Vito) but if I recollect the warning light also acted as an EDC warning.

You could PM Thrasher who could ask Alan who works at Merc UK HQ for any pointers  :wink:

Ashley:
there are some relays in the fuse box under the bonnet its on the right hand side at the back near the bulkhead, there should be a piece of paper telling you which relays/fuses are which, it may be in there, but ive never known this problem before at work.

Hope this helps

Ashley

kevinf:
try looking in the engine compartment?

maybe under the head lights
it will have one heavy live feed wire and a couple of multi plugs
one plug will have one wire per glow plug
sorry cant be any more help ask me the same question about a sprinter/vito





good luck kevin

kevinf:
UP DATE ON HEATER PLUG CONTROL UNIT LOCATION
TRY LOOKING ON THE N/S INNER WING AROUND THE AREA OF THE MAIN CONTROL UNIT,








 KEVIN

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