Glowplug replacement on Vito, how difficult?

[Vito V6]

Hey everyone

The glow plug light comes on for a minute after starting engine so likely a bad plug or two so thinking to replace them all

it's a 2009 Vito V6 3litre 120cdi (w639)

cant seem to find much info on my vehicle about it, how difficult is this job to do and what tools would be needed??
Thanks

 

[zenman63]

Its well covered if you look at any 642 engine, just the inlet pipe is different.

 

[Vito V6]

oh ok i will check it out, thanks