Hahah. Yes phase one is now complete. Car doesn’t start ever now

So is the temp gauge now always jumping to red when you turn on ignition? Can you connect to all modules with diagnostics and what are the trouble codes? If DDE is powered and you can connect normally with diagnostics that temp gauge behaviour must be caused by failed CAN-bus connection between DDE and instrument cluster.

Yes temp gauge goes straight to red. 12v was showing on cam sensor when turning the ignition to position 2. I have a Foxwell scanner. I have not scanned for codes since the fault has become permanent. I will do what you suggested tomorrow and see what comes of it. It also (not everytime though) has a gearbox overhearing warning flashing up which I hadn’t had before.

Could it have anything to do with the temp sensor?

The gauge showing could of course be caused by failed temp sensor but that is very very rare on these and it would not cause any other symptoms.

Run the auto scan on foxwell. It does a better job of finding module erorrs.

Rescanned today on a few recommendations and below is what I found.

I did a scan and heaps of codes popped up so I deleted and scanned again.

Another thing I noticed today was when I turned it over to try and start the temperature gauge started to drop back down to cold.

-EGS Transmission management 5140 No message receiver EGS transmitter DME-DDE. I think is is related to the trans fail safe warning that is coming on as a result of the original issue.

-IKE instrument cluster electronics- IKE signal line disturbed


Do these codes offer any possible reasons to anyone?

It's saying there is a wiring problem. Short or open


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Ok still no luck. How the hell do I find a “wiring” problem?

Start with cleaning the connectors everywhere. TCM DME and importantly the transmission connector. Not sure how different those are on the diesel model but everything relies on them. You may find a bundle of wires that mice have turned into a nest


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