PREVOST X3-45 COACH 2018 Operator's Manual page 179

 Press the headlights rocker switch in first
position and confirm that the instrument
panel illuminates. Press the headlights rocker
switch in second position and confirm that
the headlights illuminate.
 Turn on the high beams and check that the
corresponding cluster telltale light illuminates.
Once these commands tested, activate the test
mode to check the exterior lighting by pulling up
the multi-function lever 3 times within 3 seconds.
Go to the front of the vehicle and check the
lights:
 Left and right directional signals.
EXTERIOR LIGHTING
 Identification lights and clearance lights.
 Low beams.
 High beams.
Left side and right side of the vehicle:
 Directional signals.
 Marker lights.
Rear of the vehicle:
 Directional signals.
 Identification lights and clearance lights.
 Stoplights and taillights.
 Back-up lights.
PA1627 X3-45 Operator's Manual
Care and Maintenance
8-15