1st gear switch on Auto Prado. What does it do?

[StormyKnight Advanced Member Find all posts View Profile Close StormyKnight]

OK, I know on my Auto gearbox there is a switch to let the Engine Control Unit know that the car is in first gear. Suggestions are that it limits either horsepower or rpm to reduce the torque through the driveline whilst in first. Anyone know what it really does? Is it for use in 4WD lowrange only or all the time?

Thanks
Richard

[Snaga Wishing I was lost Find all posts View Profile Close Snaga]

Don't know how it works Richard but apart from when in low range I also use it (2nd and 1st gears) to engine brake on long down hill runs.

Coming down from Mt Tamborine behind the Gold Coast is a loooong 15'od degree descent so 1st and 2nd get a work out rather than the brakes.

Is that what your asking :? :?:

Unless there is another switch on the diesel or later models that I'm not aware of.
I have a 2nd start switch but that's all I am familiar with.

[StormyKnight Advanced Member Find all posts View Profile Close StormyKnight]

Nup, there is a switch on the actual gearbox, that tells the ECU that the gearbox is in 1st gear. However I don't know what the ECU does with this information. Thats what i'm trying to find out.

Cheers
Richard

[Snaga Wishing I was lost Find all posts View Profile Close Snaga]

ops:

My bad :lol: