inflation pressure Acura RDX 2011 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 page 454).
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.
Tire Pressure Monitoring System (TPMS)39010/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

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 page 444 for 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 393). 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
445).
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.
INFO BUTTON
CONTINUED
Tire Pressure Monitoring System (TPMS)
391
Driving
10/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

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.
When any of the tires have low
pressure, the tire pressure monitor
shows a ‘‘TIRE PRESS. ERROR
SYSTEM FUNC NORMAL ’’
message.
When you continue driving after
installing the spare tire, you will also
see this message on the multi-
information display.
U.S.
Canada SEL/RESET BUTTON
This shows that front left tire is
losing pressure.
Tire Pressure Monitoring System (TPMS)39210/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

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) will warn you when a tire
pressure is low. See page 390 for
information on the TPMS. 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.
Check the air pressures when the
tires are cold. This means the vehicle
has been parked for at least 3 hours,
or driven less than 1 mile (1.6 km).
Add or release air, if needed, to
match the recommended cold tire
pressures.
Tires44410/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

If you check air pressures when the
tires are hot (driven for several
miles/kilometers), you will see
readings 4 to 6 psi (30 to 40 kPa, 0.3
to 0.4 kgf/cm
2) higher than the cold
readings. This is normal. Do not let
air out to match the recommended
cold air pressure. The tire will be
underinflated.
You should get your own tire
pressure gauge and use it whenever
you check your tire pressures. This
will make it easier for you to tell if a
pressure loss is due to a tire problem
and not due to a variation between
gauges.
While tubeless tires have some
ability to self-seal if they are
punctured, you should look closely
for punctures if a tire starts losing
pressure. Recommended Tire Pressures
The following charts show the
recommended cold tire pressures for
most normal driving conditions.
Tire Size Cold Tire Pressure
for Normal Driving
P235/55R18 99V Front/Rear:
32 psi (220 kPa ,
2.2 kgf/cm
2)
The compact spare tire pressure is:
60 psi (420 kPa , 4.2 kgf/cm
2)
For convenience, the recommended
tire sizes and cold tire pressures are
on a label on the driver's doorjamb.
For additional information about your
tires, see page 484. 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.
CONTINUED
Tires
445
Maintenance
10/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

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 page 484). 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.
INDICATOR LOCATION MARKS
TREAD WEAR INDICATORS
Tires44610/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

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 the
compact spare tire.●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 page 393).
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 MARKS
TREAD WEAR INDICATOR
Compact Spare Tire45410/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

Glossary of Tire Terminology
Cold Tire Pressure－The tire air
pressure when the vehicle has been
parked for at least three hours or
driven less than 1 mile (1.6 km).
Load Rating －Means the maximum
load that a tire is rated to carry for a
given inflation pressure.
Maximum Inflation Pressure －The
maximum tire air pressure that the
tire can hold.
Maximum Load Rating －Means the
load rating for a tire at the maximum
permissible inflation pressure for that
tire.
Recommended Inflation Pressure －
The cold tire inflation pressure
recommended by the manufacturer.
Treadwear Indicators (TWI) －
Means the projections within the
principal grooves designed to give a
visual indication of the degrees of
wear of the tread. Tire Pressure Monitoring System
(TPMS)
－Required Federal
Explanation
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.
CONTINUED
Tire Labeling, Tire Pressure Monitoring System (TPMS)
－Required Federal Explanation
485
Technical Information
10/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

Driving on a significantly under
inflated tire causes the tire to
overheat and can lead to tire failure.
Underinflation 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.Your vehicle has also been equipped
with a TPMS malfunction indicator to
indicate when the system is not
operating properly. The TPMS
malfunction indicator is combined
with the low tire pressure telltale.
When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated.
This sequence will continue upon
subsequent vehicle start-ups as long
as the malfunction exists.
When the malfunction indicator is
illuminated, the system may not be
able to detect or signal low tire
pressure as intended.TPMS malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the
vehicle that prevent the TPMS from
functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more
tires or wheels on your vehicle to
ensure that the replacement or
alternate tires and wheels allow the
TPMS to continue to function
properly.Tire Pressure Monitoring System (TPMS)
－Required Federal Explanation48610/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu

Infant Restraint
............................
41
Infant Seats
..................................
41
Tether Anchorage Point
...........
51
Inflation, Proper Tire
..................
444
Recommended Pressures
.......
445
Inside Mirror
.............................
146
Inspection, Tire
..........................
445
Installing a Child Seat
..................
45
Instrument Panel
..........................
63
Instrument Panel Brightness
.....
120
Instruments and Controls
.............
61
Intercooler
.................................
439
Interface Dial
.............................
216
Interior Care
..............................
452
Interior Lights
............................
151
Introduction
...................................
i
iPod
®...................................
197, 260
iPod
®Error Messages
.........
203, 269
J
Jacking up the Vehicle
...............
455
Jack, Tire
...................................
455
Jump Starting
.............................
461 K
Keys
...........................................
122
L
Label, Certification
.....................
478
Lane Change, Signaling
.............
116
Lap/Shoulder Belt
.................
15, 21
LATCH Anchorage System
..........
46
Lights Bulb Replacement
...................
431
Indicator
...................................
63
Interior
....................................
151
Parking
...................................
116
Turn Signal
.............................
116
Load Limit
...........................
365, 397
LOCK (Ignition Key Position)....
125
Locks Anti-theft Steering Column
......
125
Childproof Door
......................
127
Fuel Fill Door
..........................
353
Glove Box
...............................
155
Lockout Prevention
.................
127
Power Door
.............................
126 Tailgate
...................................
128
Low Coolant Level
......................
357
Lower Anchors
.............................
46
Low Fuel Indicator
.......................
68
Low Oil Pressure Indicator
...........................
65, 465
Low Tire Pressure/TPMS Indicator
...........................
71, 390
Lubricant Specifications Chart...
480
Luggage, Storing (cargo)
...........
364
M
Maintenance
..............................
409
Main Items and Sub Items
......
415
Minder
....................................
411
Owner's Maintenance Checks
................................
417
Safety
......................................
410
Schedule
.................................
418
Malfunction Indicator Lamp
................................
65, 466
Memory, Driving Position
..........
148
Meters, Gauges
............................
73
Methanol in Gasoline
.................
352
IndexVI10/06/08 17:42:32 11 ACURA RDX MMC North America Owner's M 50 31STK640 enu