Question about 2003 Mercedes-Benz CL-Class

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Change glow plugs on mercedes vito 2.2 cdi

Apparently the plugs on my van need replacing to turn off the pre heat light on my dashboard .im not silly but im not a mechanic plus i dont have a workshop manual .is it to risky to attempt?

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This is a Diesel van -- Glow plugs are not too terribly hard to replace, and as long as you disconnect the battery first when replacing them you shouldn't have a problem (except for maybe some access issues - It is a Van) - So yeah, if you can get to them - go for it - you won't hurt anything (Provided you do not cross thread anything) and you can always stop or put them back if you feel uncomforttable...Best of luck...

Posted on Sep 12, 2009

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In the past the head had to come off a previous van, I have been told that if they have not been changed in a long time they may not come out. I'm using easy start at present as I can't afford the head off.

Posted on Nov 18, 2011

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Merc glowplugs have a tendency to "mushroom" inside the cylinders, making removal a full head-off job.

Posted on Oct 14, 2009

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1 Answer

Replace dashboard light on 2003 buick century


this isn't something I would recommend unless you have extensive mechanical experience as you'll have to carefully disconnect plugs on the back side of the instrument panel... plus isn't that a digital dash ???

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Hi i have a m reg vauxhall cav 1.9 turbo diesel im haveing trouble starting in the morning and i have changed the following, battery and the glow plugs. engine is turning over for about 8 mins on and off...


if you have changed the glow plugs and it still plays up try changing the leads that run to each glow plug if that doesnt help theres a pre heat box relay which is for the glow plugs should be somwhere near inner wing check it is clicking over after you turn the ignition to start position youll get the pre heat light on the dash once that goes listen ans you should here the box click .hope i could help

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I have a 1998 1.8 diesel van, once its running its ok, but getting it started can be difficult (esp in cold/damp) Have you got any tips for starting, does this model have a heater plug, if so what symbol...


Sounds like the glow plugs are frazzled. There is one electrical wire going to a plug, then each plug is connected in sequence. The glow plugs are heating devices used to get the fuel up to temperature before ignition.

They are fiddly to replace, but are relatively inexpensive and the most common source of issues with cold-starting diesel engines (first thing to fail).

Some cars had a 'pre-heat' available with glow plugs, where you simply turn the key part-way to 'on' and you would see a glow plug light come on (looks a bit like a picture of a spring). If you see this light on your van, you can turn the key to turn on the glow plugs and they will pre-heat your engine slightly and make starting easier

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Hard to start by sub zero temp


oh oh oh, thats why father christmas uses a horse,,,
dieal engines dont get very good starting when its realy cold,,,
the heater light may go out but are they getting realy hot???? if not it wont start very well, my trick is give it twice the heat turn the kye to pre heat when the light go's out very quikly turn it off and back to pre heat again,,, when you have dont this the second time start her up,,,
now watch her go??? the heater relay should hold the heaters on for a minuet or so even though the light has gone out, so your could be fulty and it turning them off to soon, and a biseal with out heat is a dead duck if its cold,,,do as i all ways do if its cold,,,,twice the heat then start her up, it takes far less out of the battery that cranking up twice

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1 Answer

Have a problem with my dashboard lights they dont light up.


Is the headlight switch turned all the way to illuminate the dashboard lights? If it is, check the fuse for instrument panel, also marked as instrument cluster.

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