1999 Subaru Forester Owner's Manual - Page 170
1999 Subaru Forester Manual
Page 170 highlights
Interior equipment HS6014BB B Standard elevation mode The "MODE" switch changes the barometer to the standard elevation mode of the altimeter. The altimeter indicates the "sea level" elevation. Range: -660 to 9200 ft (-200 to 2800 m) at a pitch of 20 ft or 10 m in metric measurement units. Adjustment: In order to get a precise elevation, manually correct the altimeter when the current elevation is known. "YSET": 20 ft increase or 10 m increase in metric measurement units. "B": 20 ft decrease or 10 m decrease in metric measurement units. NOTE D The indication may change during air-conditioner operation, window operation, driving in a tunnel, and so forth. D Adjustable elevation is ±780 ft (±300 m). D To cancel the adjustment and return to the default altimeter reading, press the "YSET" and "B" switch together for 1 second or more. - CONTINUED - 6-17