Polaris IDD Quick Start Manual page 32

IDD Power Sources
On snowmobiles equipped with an electric start battery
and IDD, always turn the key off when the IDD is not in
use. If the key remains in the RUN position after using
the auxiliary engine stop switch to stop the engine, the
IDD remains active, drawing power from the battery.
The IDD is not dependent on the battery while the engine
is running, but the battery supplies a constant power
source when the engine is off or when the engine is
transitioning between forward and reverse operation. If a
battery is not installed, the IDD reboots when the engine
is started and when electronic reverse (PERC) is used.
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