The Mountain Mode optimizes driving performances in alpine terrain. Ideally, the Mountain Mode should be activated right at the beginning of a long uphill in order to take advantage of the optimized performance. The Mountain Mode is activated via a software update by your local OHM dealer. To engage, hold the + button from any level of (A) or (G) for 2 sec. The four assist levels will flash, MOUNTAIN will appear briefly. Press – to disengage. The Mountain Mode sustains your power up to the top of the hill. It is not a “level 5″ of assistance, but a different setting.