FORD TRANSIT CENTRAL LOCKING SYSTEM, PUZZLE, MYSTERY

[ALAN HOLDER]

I am in need of technical assistance as even the AA and 2 local garages can't explain this one!!!!
Taking that the NEW Transit has a central locking system, operated from buttons on the Key fob. In your opinion how (If at all) when these keys were left in the ignition could it be possible for the cab doors to lock , whilst the cab is empty and the driver is still in the rear of the vehicle unloading from the rear and side doors. Which out of interest remained unlocked.
I am told that this event is impossible, however I would be really greatful for some information or opinions on this ?

[APH]

My old works Mk6 van used to do that, due to a faulty microswitch withing the drivers door mechanism, if you rattled the handle outside it would then unlock the cab again!!

However on a Mk7 due to the complexity and stupidity of the CanBus system it is quite possibe that this could happen, could even have picked up a radio signal from something nearbye.

As for CanBus, as an electronics engineer it still puzzles me why it was ever used or needed on vehicles, as now more cabling and electronics is required to do a simple job such as turn on a light, it used to be so easy, switch put feed to bulb job done, but not anymore. Switch sends pulsed signal to microporcessor, which then interprets signal and operates correct output, which usually switches a relay, or direclty sources or sinks a supply to said light WHY, ok use engine management to control emissions etc, but why alter the rest of the wiring. Now the harness used to operate everything has to have another one run with it to carry the data from all the switches, and completely un repairable without the use of another computer!!

Enough of my ranting though, i'll start another thread one day about CanBus, and see if you can all convince me why its better, as god knows i'll take some convincing.

[Vee4]

On my Mk7, occasionally whilst driving along, I have heard a noise from the rear very much like one of the locks flicking. Normal locking when stationary, and the anti-hijack locking work as they should (for now).

As APH says, it's too complicated for its own good. I was quite happy with the mechanical locks (with additional security measures) as fitted to my Mk5.