It's worse than that really Neil because, if I understand correctly, the F125 switch is sort of reporting a combination of what the gearbox is physically doing (or being told) and where the selector switch is, neither of which really needs to be done from such an exposed position.
So potentially it can not only confuse the ECU (limp mode etc.) but also mis-inform the gearbox potentially causing internal damage.
And using magnetic reed switches, or (probably better) Hall sensors would be so much more reliable. No doubt someone more knowledgeable can suggest an even better solution. 
It only actually needs to read an angle (or finite number of ranges of angles) and translate that into a number of on/off signals via a table. 
__________________
2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! 
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course.  (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
Last edited by HPsauce; 8th December 2017 at 06:02 PM.
|