No Glow plug light and not turning. ECM problem

[bobmerc45]

I have a 2008 111 extra long Vito. Just got the engine rebuild after the black death and now this. I think I know the problem but trying to find it is the biggest issue. ECM Relay? By the left foot? Under the dashboard? Soon I will have nothing left to take apart so can someone please tell me in English where I will find it. Next steps a clipper lighter and a gallon of fuel

 

[ajlsl600]

Have you hooked it up to any diagnostics yet?

 

[bobmerc45]

That's another problem because the ECM is part of the system and not talking to the diagnostic

 

[bobmerc45]

I have renewed the Glow plug relay but still have no Glow plug light and not turning over. All the other lights are coming on except the Glow plug light

 

[bobmerc45]

After many restless nights of reading it was pointed out that the reason is the ECM Relay is knackered

 

[bobmerc45]

All injectors are New and the Glow plugs

 

[M80]

Glow plug / relay fault wouldn't affect it turning over.

Tbh I don't know what the ECM is
Is this auto or manual? An issue with the auto selector can prevent it turning over.

 

[bobmerc45]

Glow plug / relay fault wouldn't affect it turning over.

Tbh I don't know what the ECM is
Is this auto or manual? An issue with the auto selector can prevent it turning over.

It's a manual

 

[bobmerc45]

It's a manual

 

[curious]

Does the glowplug light fail to come on every time you try to start?

I had something similar that was temperamental but getting worse. With no glowplug light, it wasn't interested in turning over. With a glowplug light it would turn over and start.
It turned out to be an ECU software problem in the end. Although in a C-class it was the OM646 engine, which you may well have in your Vito.

Still got problems with intermittent starting

I started a thread a while back where I thought my intermittent starting problems were related to going through deep(ish) water. I no longer think the water aspect is relevant but, I still have starting problems. First thing in the morning the car will start 1st time (2005 C220cdi coupe)...

forums.mercedesclub.org.uk

 

[bobmerc45]

Does the glowplug light fail to come on every time you try to start?

I had something similar that was temperamental but getting worse. With no glowplug light, it wasn't interested in turning over. With a glowplug light it would turn over and start.
It turned out to be an ECU software problem in the end. Although in a C-class it was the OM646 engine, which you may well have in your Vito.

Still got problems with intermittent starting

I started a thread a while back where I thought my intermittent starting problems were related to going through deep(ish) water. I no longer think the water aspect is relevant but, I still have starting problems. First thing in the morning the car will start 1st time (2005 C220cdi coupe)...

forums.mercedesclub.org.uk

No Glow plug light and not turning. Not long ago I had a bloke from rygors sort it out and was running like a new Van. After spending £4000 on the rebuild I was happy. 470 miles from a £100 note

 

[M80]

There is a fuse board beneath the passenger seat, to the left of the battery, but no relays.

I didn't read all the links, lunch is ready, but assuming this is an engine management relay I would expect to find it in the under bonnet fuse box.
Maybe the attached is useful,
if not now it is likely to be in future.

 

[bobmerc45]

Thanks for your reply and will definitely come in handy. What I really need is a good quality photo of a fuse box so that I can get relevant relay numbers for the relays. Fuses are ten a penny now days for replacement but getting the correct one is not easy. A hundred people can tell you what to buy but they don’t know where you put them and that’s the problem for me. Where as a good quality photo has all the information you need for destination and what you need to buy but sadly as much as I try I can’t find one. One bloke is saying that the relay required is down by the driver’s left foot. Bugger to find but replacing it fixes the issue. I have pulled the van apart and can’t find it. I am thinking that R4 is the most probable candidate for this job? But I just don’t know for certain. Now a quality photo would answer that question for me. Bob

 

[M80]

Compare my diagram to your fuse tray. I'm pretty sure it will serve as well as a photo.