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ok my old man's cef has this as well... along with a power button... its a 3 way switch...

POWER -> AUTO -> HOLD

it should be on auto most of the time. Hold is when you don't want the car to start boosting n stuff, it keeps your revs under a certain amount. Power is where you want as much revs as possible so it holds the gears a bit longer than usual.

There's also overdrive which should be a button next to your gear shift button...

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Power button hold gears to about 5000 rpm so it gives you more responsive driving. Also, with POWER button ON it will downshft very quickly when you press the pedal.

The Hold button will help you not to spin the wheels in slippery conditions. When you move of the line it will start in second gear and it will upshift thru the gears quickly. With HOLD button ON the acceleration will be very slow and the RPM's wont go over 3000 unless it has reached the final gear. Also, when you press the pedal it will not downshift, so no power will kick in and no slipping and sliding will occur.

O/D button lets you select between 3rd and the 4th gear once you're up the speed. OFF = 3rd, ON = 4th

Hope that helps.

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https://www.sau.com.au/forums/topic/65330-r32-hold-button/#findComment-1221822
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