Wheel Bearings; Service Brake Test; Parking Brake Test; Exterior Lighting Verification With Test Mode - PREVOST H3-45 VIP Owner's Manual

8-14 Care and Maintenance
The TPMS presents pressure readings of each tire
as a +/- deviation from the wanted target.
If a tire reads within +/- 3 PSI no adjustment is
needed.
If a tire reads -4 PSI and below, re-inflate by the
marked amount.
If a tire reads +4 PSI and above, deflate by the
marked amount.
Relying on the TPMS system is better than relying
on a hand gage since the TPMS is temperature
compensated and remain accurate no matter if the
tires are cold or hot.
Tires take up to 3 hours to get down to ambient
temperature after a ride. A common mistake
consists of checking pressure while the tires have
not fully cooled down which leads into under-inflated
tires. Relying on the TPMS eliminate this mistake.
Running tires at optimal pressure reduce tire wear,
improve safety and fuel economy.

WHEEL BEARINGS

Check wheel bearing
(especially after using the service brakes) during fuel
stops by touching the wheel bearing cover.

SERVICE BRAKE TEST

Check for correct pressure build- up. Stop engine
and check pressure gauge. Pressure loss should not
exceed 3 psi/min (21 kPa/min) with engine stopped
and without brake pedal applied. Air loss should not
exceed 7 psi/min (48 kPa/min) with engine stopped
and brake pedal fully applied.
A convenient way to proceed to the service brake
test is with the use of the DID menu "Air Leakage
Monitor". For more information, refer to
INFORMATION DISPLAY" on page 32
Other Features.

PARKING BRAKE TEST

Release parking/emergency brake. Pump service
brake pedal until air pressure drops to 65 psi (448
kPa). Make sure the warning buzzer operates and
that the emergency brakes apply (the control valve
knob lifts up). Allow air pressure to reach 95 psi (655
kPa) before releasing parking brake.
Driving the vehicle while the parking brake is applied
should not be possible.
cover for overheating
"DRIVER
in Section 5
PA-1638 Owner's Manual X3-45 VIP
EXTERIOR LIGHTING VERIFICATION WITH
TEST MODE
This useful function allows quick verification of the
vehicle exterior lights.
Activating The Test Mode:
When the vehicle is stationary (parking brake
applied), pull up the multi- function lever 3 times
within 3 seconds to activate the test mode. This test
can be done when the engine is not running providing
that the battery charge is sufficient (above 24.0
volts).
The telltale panel alarm emits a sound each second
to remind that the test mode is in progress.
NOTE
Lighting test mode can also be initiated and
stopped using the DID menu "Exterior Lamp
Inspection". For more information,
"DRIVER INFORMATION DISPLAY" on page 32
in Section 5 Other Features.
Stopping The Test Mode:
To stop the test mode, pull up the multi-function lever
once or turn the ignition OFF or remove the parking
brake.
NOTE
The test mode is useful to check the operation of
the multiplex outputs and the exterior lights. It
doesn't test the functionality of the commands
related to the exterior lighting. For a complete
testing, the directional signal commands, the
headlights commands and the brake pedal have to
be checked before. Once these commands tested,
activate the test mode to check the exterior
lighting.
refer to