sensor Acura MDX 2009 Owner's Guide

There is also a sensor on the back of
the mirror. Items hung on the mirror
may block this sensor and affect its
performance.Adjusting the Power Mirrors
1. Turn the ignition switch to the ON
(II) position.
2. Move the selector switch to L (driver's side) or R (passenger's
side). 3. Push the appropriate edge of the
adjustment switch to move the
mirror right, left, up, or down.
4. When you finish, move the selector switch to the center (off)
position. This turns the adjustment
switch off to keep your settings.SELECTOR
SWITCH
CONTINUED
Mirrors
155
Inst rument s and Cont rols
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2009 MDX

Always run the engine when you use
the AC power outlet.
The maximum capacity for this
power outlet is 115 volt AC at 100
watts or less. If you use an appliance
which requires more than 100 watts,
it automatically stops supplying the
power. If this happens, turn the
ignition switch off and turn it on
again.NOTE:
The AC power outlet is not
designed for electric appliances
which require high initial peak
wattage such as cathode-ray tube
type televisions, refrigerators,
electric pumps, etc. It is also not
suitable for devices that process
precise data such as medical
equipment or measuring
instruments. Any appliances that
require an extremely stable power
supply such as microcomputer-
controlled electric blankets, touch
sensor lamps, etc., should not be
connected to this outlet.Interior Convenience Items16808/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

When you set the temperature to its
lower limit (
) or its upper limit
(
), the system runs at full cooling
or heating only. It does not regulate
the interior temperature.
When you press a fan control button,
the fan is taken out of AUTO mode.
When the indicator in the dual
button is on, the driver's side and
passenger's side temperature can be
controlled independently (see page
177).
When the indicator in the rear button
is on, the temperature of the rear
passenger compartment can be
controlled independently (see page
177).
On models with navigation systemIn the Auto mode, the vehicle's
interior temperature is independently
regulated for the driver, front
passenger, and rear passengers
according to each adjusted
temperature. The system also
regulates each temperature based on
the information of the sun light
sensor and the sun's position which
is updated automatically by the
navigation's global positioning
system (GPS). For example, if the
driver's side of the vehicle is getting
too much sun, the system will adjust
to a lower temperature.
Dual ButtonYou can set the temperatures for the
driver's side and the passenger's side
separately when this button is
pressed (indicator is on). When the
indicator in the DUAL button is off,
the temperatures for both sides are
synchronized to the driver's side set
temperature. When defrost mode is
selected, dual mode operation is
canceled.
Climate Control System17208/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Sunlight and Temperature
SensorsTo regulate the interior temperature
and humidity, the climate control
system has two sensors. A sunlight
sensor is located in the top of the
dashboard and a temperature/
humidity sensor is next to the
steering column. Do not cover the
sensors or spill any liquid on them.
SUNLIGHT SENSOR
TEMPERATURE/HUMIDITY SENSOR
Climate Control System
179
Feat ures
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2009 MDX

Carrying Cargo in the Passenger
Compartment●Store or secure all items that could
be thrown around and hurt
someone during a crash.●Be sure items placed on the floor
behind the front seats cannot roll
underneath and interfere with the
proper operation of the seats, the
sensors under the seats, or the
driver's ability to operate the
pedals.
Also, keep all cargo below the
bottom of the windows. If it is
higher, it could interfere with the
proper operation of the side
curtain airbags.●Keep the glove box closed while
driving. If it is open, a passenger
could injure their knees during a
crash or sudden stop.Carrying Cargo in the Cargo Area
or on a Roof Rack
●Distribute cargo evenly on the
floor of the cargo area, placing the
heaviest items on the bottom and
as far forward as possible. Tie
down items that could be thrown
about the vehicle during a crash or
sudden stop.●If you fold down the second or
third row seats, tie down items that
could be thrown about the vehicle
during a crash or sudden stop.
●If you carry large items that
prevent you from closing the
tailgate, exhaust gas can enter the
passenger area. To avoid the
possibility of
carbon monoxide
poisoning, follow the instructions
on page58.●If you carry any items on a roof
rack, be sure the total weight of
the rack and the items does not
exceed 165 lbs (75 kg).
If you use an accessory roof rack,
the roof rack weight limit may be
lower. Refer to the information that
came with your roof rack.
CONTINUED
Carrying Cargo
335
Bef ore Driving
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2009 MDX

Your vehicle is equipped with a tire
pressure monitoring system (TPMS)
that turns on every time you start the
engine and monitors the pressure in
your tires while driving.
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes significantly low, the sensor
in that tire immediately sends a
signal that causes the low tire
pressure/TPMS indicator in the
instrument panel to come on. If this
happens, you will see which tire is
losing pressure on the multi-
information display along with a
‘‘CHECK TIRE PRESSURE ’’
message.
Low Tire Pressure/
TPMS Indicator
When the low tire pressure/TPMS
indicator is on, one or more of your
tires is significantly underinflated.
You should stop and check your tires
as soon as possible, and inflate them
to the proper pressure as indicated
on the vehicle's tire information
placard.
It is possible that the pressures
shown on the multi-information
display and the pressures you
manually measure are slightly
different.
If the difference is significant or you
cannot make the low tire pressure/
TPMS indicator and message on the
multi-information display go out after
inflating the tires to the specified
values, have your dealer check the
system as soon as possible. If you think you can safely drive a
short distance to a service station,
proceed slowly to the station, then
inflate the tire to the recommended
pressure.
If the tire is flat, or if the tire pressure
is too low to continue driving, replace
the tire with the compact spare tire
(see page425).
Driving on a significantly under-
inflated tire causes the tire to
overheat and can lead to tire failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle's handling and
stopping ability.
Because tire pressure varies by
temperature and other conditions,
the low tire pressure/TPMS
indicator may come on unexpectedly.
CONTINUED
Tire Pressure Monitoring System (TPMS)
351
Driving
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To see the inflation pressures of all
four tires, press the SEL/RESET
button. The display changes as
shown above.
Each tire pressure is shown in PSI
(U.S. models) or in kPa (Canadian
models).
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes significantly low, the sensor
in that tire immediately sends a
signal that causes the low tire
pressure/TPMS indicator in the
instrument panel to come on. If this
happens, you will see which tire is
losing pressure on the multi-
information display along with a
‘‘CHECK TIRE PRESSURE ’’
message.
U.S. model
Canadian model
This shows that front left tire
is losing pressure.
CONTINUED
Tire Pressure Monitoring System (TPMS)
353
Driving
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If the low tire pressure/TPMS
indicator comes on, or the multi-
information display shows a‘‘CHECK
TPMS SYSTEM ’’message, the VSA
system automatically turns on even
when the VSA system is turned off
by pressing the VSA OFF switch
(see page360).If this happens, you
cannot turn the VSA system off by
pressing the VSA OFF switch again.
When you restart the vehicle with
the compact spare tire, the TPMS
system message will also be
displayed on the multi-information
display after several miles
(kilometers) driving.
Changing a Tire with TPMS
If you have a flat tire, the low tire
pressure/TPMS and tire monitor
indicators will come on. Replace the
indicated flat tire with the compact
spare tire (see page425). After the flat tire is replaced with the
spare tire, the low tire pressure/
TPMS indicator stays on while
driving. After several miles
(kilometers) driving, this indicator
begins to flash, then stays on again.
You will also see a
‘‘CHECK TPMS
SYSTEM ’’message on the multi-
information display. This is normal;
the system cannot monitor the spare
tire pressure. Manually check the
spare tire pressure to be sure it is
correct. This indicator and the warning
message on the multi-information
display will go off, after several miles
(kilometers) driving, when the spare
tire is replaced with the specified
regular tire equipped with the tire
pressure monitor sensor.
Each wheel is equipped with a tire
pressure sensor mounted inside the
tire behind the valve stem. You must
use TPMS specific wheels. It is
recommended that you always have
your tires serviced by your dealer or
a qualified technician.
Never use a puncture-repairing agent
in a flat tire. If used, you will have to
replace the tire pressure sensor.
Have the flat tire repaired by your
dealer as soon as possible.
CONTINUED
Tire Pressure Monitoring System (TPMS)
355
Driving
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VSA and Tire Sizes
Driving with varying tire or wheel
sizes may cause the VSA to
malfunction. When replacing tires,
make sure they are of the same size
and type as your original tires (see
page419).
If you install winter tires, make sure
they are the same size as those that
were originally supplied with your
vehicle. Exercise the same caution
during winter driving as you would if
your vehicle was not equipped with
VSA.
U.S. Sport Packages and Canadian ElitemodelsThe active damper system is always
on, constantly adjusting your
vehicle's dampers to the best settings
for current road conditions along
with vehicle speed and handling
inputs.
The system uses electrically
controlled dampers to enhance
handling precision, vehicle
composure, tire to road adhesion and
rough road ride comfort isolation.
The system reacts to inputs from
various electronic sensors to give
exactly the right amount of
suspension damping to provide
optimal ride comfort and handling. The system provides two selectable
modes.
Sport mode: The system prioritizes
handling response, vehicle body
control and tire-to-road adhesion to
allow for higher performance
handling.
Comfort mode: The system
prioritizes road isolation to allow for a
more comfortable ride.
Either mode can be used in any type
of operating conditions.
CONTINUED
Vehicle Stability Assist (VSA
®), aka Electronic Stability Control (ESC), System, Active Damper System
361
Driving
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Your vehicle is equipped with trailer
stability assist function. This function
works on the same sensors as the
vehicle stability assist (VSA) system.
This function helps to stabilize the
vehicle/trailer combination when the
trailer severely sways or oscillates.
For more information on the VSA
system, see page359.
If the function detects vehicle/trailer
instability, it checks if the swaying is
caused by the trailer, and if the
trailer swaying or oscillation is
increasing.
The vehicle/trailer combination is
more affected by crosswinds,
buffeting, and improper tongue load.
These conditions can make the
trailer unstable, and cause it to sway.Under these conditions, trailer
stability assist begins to stabilize the
vehicle/trailer combination by
reducing the vehicle speed. The
control unit sends signals to
selectively apply the brakes and
regulate the engine output. The
brake lights of your vehicle will be
turned on automatically by the
system even if you do not keep the
pressure on the brake pedal.
When the brakes are applied, the
trailer's brake lights come on along
with the vehicle brake lights.
When the trailer stability assist
activates, you will see the VSA
activation indicator blink. There may
also be some noise from the VSA
hydraulic system.Trailer stability assist cannot prevent
a loss of control. Always reduce the
vehicle speed and steer firmly. Do
not brake suddenly or make quick
steering motion. It could cause the
trailer to jackknife or turn over and
the system becomes ineffective.
Trailer stability assist cannot prevent
swaying that can occur in crosswinds
and in normal and emergency
driving maneuvers. It helps only to
stabilize the vehicle/trailer
combination in these conditions,
after the oscillation becomes severe.
Trailer stability assist will also be
ineffective while driving at high
speed or towing a trailer with a high
center of gravity.
Always obey the recommended
speed limits for towing a trailer, see
page374.Trailer Stability Assist37608/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX