inflation pressure Acura MDX 2009 Owner's Manual

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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2009 MDX

For example, if you check and fill
your tires in a warm area, then drive
in extremely cold weather, the tire
pressure will be lower than
measured and could be underinflated
and cause the low tire pressure/
TPMS indicator to come on. Or, if
you check and adjust your tire
pressure in cooler conditions, and
drive into extremely hot conditions,
the tire may become overinflated.
However, the low tire pressure/
TPMS indicator will not come on if
the tires are overinflated.
Refer to page415for tire inflation
guidelines.
If there is a problem with the TPMS,
this indicator begins to flash. It stops
flashing after approximately 1
minute, then stays on. You will also
see a‘‘CHECK TPMS SYSTEM’’
message on the multi-information
display (see page 82). Although your tire pressure is
monitored, you must manually check
the tire pressures monthly.
Each tire, including the spare, should
be checked monthly when the
vehicle is cold, and set to the
recommended inflation pressure as
specified on the vehicle placard and
in the owner's manual (see page
416).
Tire Pressure Monitor
To select the tire pressure monitor,
press the INFO button several times
with the ignition switch in the ON
(II) position.
You will see the above display on the
multi-information display when all
tire pressures are normal.
Tire Pressure Monitoring System (TPMS)35208/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

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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2009 MDX

To safely operate your vehicle, your
tires must be the proper type and
size, in good condition with adequate
tread, and correctly inflated.
The following pages give more
detailed information on how to take
care of your tires and what to do
when they need to be replaced.
Using tires that are excessively
worn or improperly inflated can
cause a crash in which you can
be seriously hurt or killed.
Follow all instructions in this
owner's manual regarding tire
inflation and maintenance.Inflation Guidelines
Keeping the tires properly inflated
provides the best combination of
handling, tread life, and riding
comfort.
●Underinflated tires wear unevenly,
adversely affect handling and fuel
economy, and are more likely to
fail from being overheated.●Overinflated tires can make your
vehicle ride more harshly, are
more prone to damage from road
hazards, and wear unevenly.
The tire pressure monitoring system
(TPMS) warns you when a tire
pressure is low. See page351for
more information.
Even though your vehicle is
equipped with TPMS, we
recommend that you visually check
your tires every day. If you think a
tire might be low, check it
immediately with a tire gauge. Use a gauge to measure the air
pressure in each tire at least once a
month. Even tires that are in good
condition may lose 1 to 2 psi (10 to
20 kPa, 0.1 to 0.2 kgf/cm
2) per
month. Remember to check the
spare tire at the same time.CONTINUED
Tires
415
Maint enance
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2009 MDX

Tire Inspection
Every time you check inflation, you
should also examine the tires for
damage, foreign objects, and wear.
You should look for:●Bumps or bulges in the tread or
side of the tire. Replace the tire if
you find either of these conditions.●Cuts, splits, or cracks in the side of
the tire. Replace the tire if you can
see fabric or cord.●Excessive tread wear.
Your tires have wear indicators
molded into the tread. When the
tread wears down, you will see a 1/2
inch (12.7 mm) wide band across the
tread. This shows there is less than
1/16 inch (1.6 mm) of tread left on
the tire.
A tire this worn gives very little
traction on wet roads. You should
replace the tire if you can see three
or more tread wear indicators.Tire Service Life
The service life of your tires is
dependent on many factors,
including, but not limited to, driving
habits, road conditions, vehicle
loading, inflation pressure,
maintenance history, speed, and
environmental conditions (even
when the tires are not in use).
In addition to your regular
inspections and inflation pressure
maintenance, it is recommended that
you have annual inspections
performed once the tires reach five
years old. It is also recommended
that all tires, including the spare, be
removed from service after 10 years
from the date of manufacture,
regardless of their condition or state
of wear.
The last four digits of the TIN (tire
identification number) are found on
the sidewall of the tire and indicate
the date of manufacture (See
Tire
Labeling on page456).
INDICATOR LOCATION MARKS
TREAD WEAR INDICATORS
CONTINUED
Tires
417
Maint enance
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2009 MDX

Tire Maintenance
In addition to proper inflation, correct
wheel alignment helps to decrease
tire wear. If you find a tire is worn
unevenly, have your dealer check the
wheel alignment.
Have your dealer check the tires if
you feel a consistent vibration while
driving. A tire should always be
rebalanced if it is removed from the
wheel. When you have new tires
installed, make sure they are
balanced. This increases riding
comfort and tire life. For best results,
have the installer perform a dynamic
balance.Improper wheel weights can damage
your vehicle's aluminum wheels. Use
only Acura wheel weights for
balancing.Tire Rotation
To help increase tire life and
distribute wear more evenly, rotate
the tires according to the
maintenance messages displayed on
the multi-information display. Move
the tires to the positions shown in
the illustration each time they are
rotated. If you purchase directional
tires, rotate only front-to-back.
Replacing Tires and Wheels
Replace your tires with radial tires of
the same size, load range, speed
rating, and maximum cold tire
pressure rating (as shown on the
tire's sidewall).
Mixing radial and bias-ply tires on
your vehicle can reduce braking
ability, traction, and steering
accuracy. Using tires of a different
size or construction can cause the
ABS and vehicle stability assist
system (VSA) to work inconsistently.
The ABS works by comparing the
speed of the wheels. When replacing
tires, use the same size originally
supplied with the vehicle. Tire size
and construction can affect wheel
speed and may cause the system to
activate.
When the tires are rotated, make
sure the air pressures are checked.
Front Front
(For Non-directional
Tires and Wheels) (For Directional
Tires and Wheels)
Tires41808/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Use the compact spare tire as a
temporary replacement only. Get
your regular tire repaired or
replaced, and put it back on your
vehicle as soon as you can.
Check the inflation pressure of the
compact spare tire every time you
check the other tires. It should be
inflated to:
60 psi (420 kPa, 4.2 kgf/cm
2)
Follow these precautions:
●Never exceed 50 mph (80 km/h).●This tire gives a harsher ride and
less traction on some road
surfaces. Use greater caution while
driving.
●Do not mount snow chains on a
compact spare.●Do not use your compact spare tire
on another vehicle unless it is the
same make and model.●After the flat tire is replaced with
the spare tire, the low tire
pressure/TPMS indicator stays on.
After several miles (kilometers)
driving with the spare, this
indicator begins to flash, then
stays on again. You will also see a
‘‘ CHECK TPMS SYSTEM’’
message on the multi-information
display (see page354).
Replace the tire when you can see
the tread wear indicator bars. The
replacement should be the same size
and design tire, mounted on the
same wheel. The spare tire is not
designed to be mounted on a regular
wheel, and the spare wheel is not
designed for mounting a regular tire.INDICATOR LOCATION MARK
TREAD WEAR INDICATOR BAR
Compact Spare Tire42408/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label.
(If your vehicle has tires of a different
size than the size indicated on the
vehicle placard or tire inflation
pressure label, you should determine
the proper tire inflation pressure for
those tires.)As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale
when one or more of your tires is
significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure.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.
Please note that the TPMS is not a
substitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correct tire
pressure, even if under-inflation has
not reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
Tire Pressure Monitoring System (TPMS)
－Required Federal Explanation45808/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Indicators, Instrument Panel
........
63
ABS (Anti-lock Brake)
..............
66
Active Damper System
......
71, 361
A/T Temp
................................
68
Brake (Parking and Brake System)
.........................
65, 438
Charging System
..............
65, 436
Cruise Control
..........................
70
Cruise Main
.............................
70
Fog Lights
................................
70
High Beam
...............................
70
Key (Immobilizer System)
.......
70
Lights On
.................................
70
Low Fuel
..................................
71
Low Oil Pressure
..............
65, 436
Low Tire Pressure
....................
68
Maintenance Minder
...............
383
Malfunction Indicator Lamp
...................................
437
Passenger Airbag Off
.. .............
34
Seat Belt Reminder
.............
20, 64
Security System
.......................
71
SH-AWD
®.................................
69
Side Airbag Off
............ .............
66
SRS
.....................................
33, 66
System Message
.................
69, 80 Tire Pressure Monitor
..............
68
Turn Signal and Hazard Warning
...............................
67
VSA Activation
.........................
67
VSA System
.............................
67
Individual Map Lights
................
160
Infant Restraint
............................
42
Infant Seats
..................................
42
Tether Anchorage Point
...........
51
Inflation, Proper Tire
..................
415
Inside Mirror
.............................
154
Inspection, Tire
..........................
417
Installing a Child Seat
..................
46
Instrument Panel
..........................
63
Instrument Panel Brightness
..............................
123
Instruments and Controls
.............
61
Interface Dial
.............................
200
Interior Lights
............................
159
Introduction
...................................
i
J
Jacking up the Vehicle
...............
425
Jack, Tire
...................................
425 Jump Starting
.............................
432
K
Keyless Memory Settings
..........
139
Keys
...........................................
126
L
Label, Certification
.....................
450
Lane Change, Signaling
.............
118
Lap/Shoulder Belt
.................
15, 21
LATCH Anchorage System
..........
47
Light Control Switch
..................
159
Lights Bulb Replacement
...................
403
Indicator
.......... .........................
63
Interior
....................................
159
Parking
...................................
118
Load Limit
...........................
333, 364
LOCK (Ignition Key Position)
.................................
129
Locks Anti-theft Steering Column
......
129
Childproof Door
......................
131
IndexVI08/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Tire Chains
................................
420
Tire, How to Change a Flat
........
425
Tire Information
.........................
456
Tire Labeling
..............................
456
Tire Pressure Monitoring System (TPMS)
.......................
351,458
Low Tire Pressure Indicator
........................
68, 351
Tire Pressure Monitor
.......
77, 352
Tires
..........................................
415
Air Pressure
............................
415
Checking Wear
.......................
417
Compact Spare
........................
424
DOT Tire Quality Grading (U.S. Vehicles)
.............................
454
Inflation
...................................
415
Inspection
...............................
417
Labeling
..................................
456
Maintenance
...........................
418
Pressure Monitoring System
................................
351
Replacing
................................
418
Rotating
..................................
418
Snow
.......................................
419
Specifications
..........................
453
Tire Chains
.............................
420 Tools, Tire Changing
.................
425
Towing A Trailer
..................................
363
Emergency Wrecker
...............
446
Equipment and Accessories
.........................
369
Trailer Loading
.......................
364
Trailer Stability Assist
.............
377
Trailer Towing Tips
.................
373
Weight Limit
...........................
364
TPMS (Tire Pressure Monitoring System)
..............................
351
Required Federal Explanation
.........................
458
Trailer Stability Assist
................
376
Transmission Checking Fluid Level
..............
399
Fluid Selection
........................
399
Identification Number
.............
450
Shifting the Automatic
.............
341
Treadwear
..................................
417
Trip Computer
.............................
78
Trip Meter
...................................
75
Turn Signals
.................................
67 U
Unexpected, Taking Care of
the
..........................................
423
Uniform Tire Quality Grading
..................................
454
Unleaded Gasoline
.....................
322
Used Oil, How to Dispose of
......
395
V
Vanity Mirror
.............................
166
Vehicle Capacity Load
................
333
Vehicle Dimensions
...................
452
Vehicle Identification Number
..................................
450
Vehicle Stability Assist (VSA
®),
aka Electronic Stability
Control (ESC),System
...... ..................
359
VSA Activation Indicator
.....
67, 81
VSA System Indicator
.........
67, 81
Vehicle Storage
..........................
422
Ventilation
..................................
177
VIN
............................................
450
CONTINUED
Index
XI
INDEX
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2009 MDX