Walaikum asalam, it's Ect (electronic control transmission) tranny switch,
PWR mode makes the gear shift gears much later than usual. The car is also more prone to downshifting to gain more power.pwr mode usually use in snow (using for traction)
MANU mode Fairly straight forward, this mode HOLDS your gear and will not release the gear until this mode is off. Means you can also drive your car manually,
Sent from my HTCONE using PW Forums mobile app