2002 SANTE keypad unused buttons

[Alcottawa]

On the keypad there is an 'up' arrow key and a 'down' arrow key but I haven't found mention of it in the manual and didn't find a wiring diagram... I'm assuming they are for ad ins that weren't included/used for this particular year or model?
Thinking they are a momentary button but haven't taken a look in behind to test yet, thinking I may use it as the fill/drain for the recently added bow sac,,, any info greatly appreciated ,

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[Neptune442]

I think those were to adjust an optional power seat

[Alcottawa]

I think those were to adjust an optional power seat

Thanks a ton, I do see a sliding stern seat noted on the harness wiring diagram, that gives me a place to start

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[NautiqueJeff]

That keypad was used on prior-year boats too, and some of them had the engine cover that used a powered lift strut. Those would control that.