The Dispatch | Expert | Scudo Hub

I'll admit  didn't follow the vid that closely and the OP is pretty vague about what he has exactly and doesn't provide any pics so we can only make guesses.
If it were mine I'd be examining wiring diagrams to determine the possibility of externally hacking it.
 
Going by the pic just posted, that grey part may be a relay which has power but will only feed the solenoid say on a short internal lead under the armour when enabled by the control unit after a code is input on the panel.
This would make breaking into the box necessary in order to jump the relay.
I'd have it gone anyway even if I had the code cos inputting a code every time you want to nip to the shops
would be a chore and I'd fit a more modern remote alarm system and maybe a hidden switch too.

Mine has 3 x M6  Countersunk screws with a T30 socket but normal hex screws could be used of course
These M6x16mm HT 10.9 Hex head ones are £2.53 for 5

https://www.ebay.co.uk/itm/183666055465?

Common rail DI pumps running at higher pressures tend to impart more heat to the returning fuel
than conventional pumps which lowers its density and viscosity, so the coolers try and compensate for this
by keeping the fuel within an acceptable temperature range.
The higher temps can also have an effect on plastics if not kept within certain bounds.

I read somewhere that 40-50C is an optimum fuel temp for deisel and if it rises significantly above this,
efficiency drops away in relation to the lower density.
I does occur to me that the ECU should be able to alter electronic injector timings to correct for this but
not sure if this is done on these engines or not.

Wouldn't a 2005 be post face lift like this one?

This is a pre face lift

I don't have the wiring diagram for this engine but if the fans are low side switched
((ie permanent voltage to motor and relay between motor and ground)
It's possible the contacts have fused together or being held together by mechanical failure
or have a fixed 12v on the coil side due some other fault.
if i find a diagram I'll post it up.

Now I have a Lexia PP2000 thingy too
I installed the software/VMware and have only done some basic tests to read fault codes so far
and none reported.
I could already do this with Delphi/DS150e to be fair so time will tell if it will get further under the hood
and be worth the time, cost and faffing about

I've collected so much various OBD stuff for car and bikes I knocked up a wee box
to keep it all together

I'd suggest you check and clean the existing ones
IMO Its rarely the cables but the terminals that go bad
Diagrams show these vans have various searth/ground points
The main one near the battery another just in front behind the headlight
One on the driver side near the ECU
in the cab there are points under the dash either side with 2 near the heater motor and fuse box and this is where the heater motor and it controllers get a ground.

A can of contact//switch cleaner and squishing it into any connectors you come across will do no harm either

Send them a registered letter saying the van (goods) are overdue for collection
and becoming a nuisance as you need the space for a new vehicle.
If not collected in good time or fixed date arranged and held to for collection
the good will be disposed of probably by scrap vehicle collection.

The fact they've 'gone dark' works in your favour IMO as you held up your end of the deal and they are at fault
by them making no attempt to communicate with you to arrange collection

This page is not quite the same situation but may help

https://www.lawgistics.co.uk/blog/legal … collected/

did you try to see if you had any control over the fan speed before switching off
or were you target fixated on retail therapy? 

It does sound as if you have erratic connections or grounding issues though

As we have what appears to be the same model/engine
I'd be interested in the alarm removal process as I have an alarm on mine which is non functional
and Id like to remove it in case it causes problems

I'm reminded of Triggers broom that was many years old and had umpteen heads and handles 

I have the same van and had the dash off umpteen times when
sorting the heater out.
Its pretty easy to do with a T20 driver IIRC and the heater looks easy enough to access