Subaru Forester: Warning and indicator / Auto Start Stop indicator light (green)

This indicator light illuminates when the
engine has been temporarily stopped by
the Auto Start Stop system. It will turn off
when the engine is restarted.
When a vehicle is stopped, the indicator
light illuminates when the operating condition
of idling stop are not meet. The light
will turn off when the vehicle starts driving...
Other information:
Check Driver Assistance system
If a operational issue or electrical problem occurs within the Parking Distance Warning system or its associated sensors and sub-components, the instrument cluster promptly alerts the driver by displaying a clear warning message...
Battery: Button battery CR1620 or
equivalent
Wrap a flat-head screwdriver with vinyl
tape or a cloth. Open the key head using a
flat-head screwdriver.
Remove the transmitter case from the
key head.
Open the transmitter case by releasing
the hooks...