On my one which is grey the numbers atop it are 05293163AA. Below that 21911C. Then below that Made in Canada ? !..Wow never knew anything was made in Canada but Snow.

And these numbers are same as 2004 car parts catalogue.
OOps my car 2003 2.5CRD LTD..

Mine is black so i suspect the person who owned it before put same relay as the fan relays and that might explain the white smoke :mad:

∀ndy, what does your 'key dance' give you ? I'd expect at least a P0380 or a P0381 on bog standard ODB's.

Glowplug relay
 

Well if the socket fits on relay I think it's okay , you could try messure with a clamp Amp.meter to see the current, Each glowplug draw around 15-20 Amps.if I remember correct. High Amp.(20A) from cold & a bit lower when hot(15A).

70% of auto electrical fails only show when you got load on the harness.Typical fail could be broken wire , corrode socket or broken isolation with a corrode wire. Bad earth conection. You can messure with a volt meter and you think it's okay but with load on the harness the volt will drop.Messure the current and you know for sure .

If you get around it , try disconnect battery and turn fuse box upside down and look at all the connectors . I have seen a few where connectors was corroded and had a lot of strange errors.

RG diesel version is also common to faults in harness in engine bay becourse of vibrations it can take hours to split up the harness to finde the broken wire.

And the 2.8CRD got the transmission box out in the left fender and thay corrode away like a painkiller in a glass of water.

My relay is grey, and checked that first, easiest part to check, and in testing I took it out, applied 12v to the coil terminals and passed load through the switched contacts, that way you can be sure it's not corroded, etc.

QinteQ, good point on the codes, just did the dance and only have P0100 showing up (MAF error?) and yep as you say I'd expect a P code from the plugs, however all my electrical tests now show the glow plugs aren't working at all (plugs rather than wiring or ign trigger), so I've ordered some and going to change them probably this weekend.

Ok ∀ndy lad, I hope the 'offline' tests were correct and the new set sort out your starting. Best of luck.

Success!

Spent a bit of time yesterday and today and managed to replace 3 out of 4 plugs so far (The one behind the alternator I've not managed to yet, will need a flexi to get that out).

QinteQ, it's starting a treat now even with only 3 out of 4, no huge cloud of smoke. And yep, all four plugs were completely dead, so the electrical test of checking resistance on the tip of the plug to ground whilst still in the block is a decent test, did the job!

If anyone wants it, i've done a basic video on what I did to replace them. Feel free to drop comments or laughter at my lack of mechanical prowess!

Just shows to be what I've always said is the truth. Want it done right - do it your self. There's loads of anecdotal evidence to say that fitters and mechanics never test or change the hard to get at one .. .. even when you have asked for and paid for four.

Good man Andy, they are good cars, get it right and it will look after you.

Well don Andy ! Glowplugs is a service part like brakepads :)