Coolant level sensor (or lack of one)

[roozle]

Only one relay tucked up under the dash - no idea what this one does but don't think its for level sensor, as its the same as the one in port 3
Its been there since day one as well.

[MidLifeCrisis]

Only one relay tucked up under the dash - no idea what this one does but don't think its for level sensor, as its the same as the one in port 3
Its been there since day one as well.

Yes - that's a normal relay (probably the relay for the radiator fan).
The coolant sensor 'relay' is a bit taller than a standard relay ......
... that's where it should be .... very strange .....
... you might have to go for a bit of a search ...
... you could trace the wire from the dashboard coolant gauge and try to figure out where it goes ....

[itchyfeet]

All the vans have DIN standard wiring as far as I know so the colours are what to look for
You need blue/green and brown for tge sensor connector in the engine bay
If its not that colour then its not a level sensor connector

If it is then you are looking for blue/green brown black and yellow red to a relay holder up front