Power Down Warning Light aka the Turtle

If this warning light illuminates, the power provided
by the electric motor will be reduced and the
vehicle will be only able to move at low speeds.

This warning light will illuminate;
1. When the energy level in the main drive lithium-
ion battery is near empty.

2. When temperature of the electric motor unit
or the main drive lithium-ion battery is too
high or too low.

3. When voltage of the main drive lithium-ion
battery becomes low.

If the energy level gauge shows 0 bar, the main
drive lithium-ion battery is near empty and must
be charged as soon as possible.

If the warning light illuminates when the outside air temperature
is very low, move the vehicle to a warmer location.
If the warning light illuminates after the vehicle has been
driven continuously uphill or when the outside air temperature
is very high, stop the vehicle in a safe place so the electric
motor unit and/or the main drive lithium-ion battery can cool
down. When they have cooled down, the warning light will go
off. If the warning light does not turn off, contact a certified i-
MiEV dealer.

ADDITIONAL NOTES
1. When the power down warning light illuminates, avoid
rapid starts and aggressive acceleration.
2. Illumination of the power down warning light does not
indicate a malfunction.
3. If the power down warning light illuminates while the air
conditioning is used, the cooling or heating may stop
operating and only the fan will operate.

ref. owner's manual

The problem is when the car can't evaluate correctly its capacity (thinks that it has 10% more). It will show turtle and stop immediately.