[silver_scooby]

You just met the love-child of legal & accounting. Dumb fuck juice +litigation gives us clutch start. Bean counters refuse to let engineering install a neutral position sensor inside the gearbox.

That one sensor would allow us to have a neutral start AND remote start on manuals so we don't boil in summer. But nooo, that's too expensive, so we get 2 clutch sensors which probably cost the same.

Bottom clutch sensor is for crank enable. Top is for gear position. When the pedal is fully released, gauge cluster guesses your gear based on wheel speed & engine rpm.

 

[silver_scooby]

Nope, I have the same one & I went through the shop manual and parts diagram multiple times. There's no position switch inside gearbox other than reverse for the camera.

Cruise control disengages because it compares engine rpm to wheel speed and realizes something is off. Also if you powershift without clutch, you won't have a gearbox eventually.

 

[silver_scooby]

See attached wiring diagram.

Yeah I saw that in the shop manual and went hunting around the actual trans on oil changes, it's not there.

The parts diagram also shows the neutral position and "up light" sensors. Not present on the transmission and there's some mixup between wrx & sti sensors in shop manual.

MT, TRANSFER & EXTENSION. 2021 Subaru WRX 2.0L 6MT Base | Subaru Parts Online

2021 Subaru WRX 2.0L 6MT Base MT, TRANSFER & EXTENSION TRANSFER

parts.subaru.com

 

[silver_scooby]

I'm pretty sure the parts diagram and shop manual are confusing wrx & STi gearboxes. The parts diagram shows those sensors on the front end. I found some pictures of the wrx trans:

There are no electrics anywhere other than the one reverse sensor. The STi gearbox has more wiring so it's possible that it has neutral sensor.

If you stall at a light (which, of course, none of us do), would you take the time to shift to neutral, start, then into first, or simply push the clutch in, start, and go?

Ideally it would be an either/or situation. Press clutch or put in neutral to start. Easy enough to do.

 

[silver_scooby]

Interesting I'll have to look again. Last time I checked I saw the reverse switch in the position you've shown it. No neutral switch. Ideally a neutral switch should allow for remote start on manuals with the oem parts.

That location is also right at the back next to center diff, not sure how you could possible get a neutral position reading there.