Corner and back sensor locations
There are two corner sensors (A) at the corners of the rear bumper, and two back sensors (B) in the centre of the rear bumper.

See also:
Meter, gauge and indication/ warning lamp operation
Run the engine to check the operation of all meters, gauges, and indication/warning
lamps.
If there is anything wrong, take the vehicle to an authorized MITSUBISHI dealer
for inspection. ...
Overview
Mitsubishi Motors extends the concept one notch below (C-segment) with the
introduction of a smaller and sportier sibling: the all-new Mitsubishi ASX
compact crossover. Another "global car fo ...
Lamp monitor buzzer
[When the engine was started using the key] If the driver’s door is opened when
the key is in the “LOCK” or “ACC” position or removed from the ignition switch while
the lamps are on, a b ...
