2009 Acura MDX climate control

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

Dust and Pollen Filter
This filter removes the dust and
pollen that is brought in from the
outside through the climate control
system.
Have your dealer replace the filter
when this service is indicated by a
maintenance message on the multi-
information display. It should be
replaced every 15,000 miles (24,000
km) if you drive primarily in urban
areas that have high concentrations
of soot in the air, or if the flow from
the climate control system becomes
less than usual.Cleaning the Seat Belts
If your seat belts get dirty, use a soft
brush with a mixture of mild soap
and warm water to clean them. Do
not use bleach, dye, or cleaning
solvents. Let the belts air-dry before
you use the vehicle.Dirt build-up around the openings of
the seat belt anchors can cause the
belts to retract slowly. Wipe the
openings with a clean cloth
dampened in mild soap and warm
water or isopropyl alcohol.
OPENING
Dust and Pollen Filter, Cleaning the Seat Belts
409
Maint enance
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2009 MDX

●Are you using the proper starting
procedure? Refer toStarting the
Engine on page339.●Do you have fuel? Check the fuel
gauge; the warning indicator may
not be working.●There may be an electrical
problem, such as no power to the
fuel pump. Check all the fuses (see
page440).
If you find nothing wrong, you will
need a qualified technician to find the
problem. See Emergency Towing on
page446. Jump Starting
Although this seems like a simple
procedure, you should take several
precautions.
A battery can explode if you do
not follow the correct
procedure, seriously injuring
anyone nearby.
Keep all sparks, open flames,
and smoking materials away
from the battery.
You cannot start your vehicle by
pushing or pulling it.
To Jump Start Your Vehicle:1. Open the hood, and check the physical condition of the battery.
In very cold weather, check the
condition of the electrolyte. If it
seems slushy or frozen, do not try
jump starting until it thaws.If a battery sits in extreme cold, the
electrolyte inside can freeze. Attempting
to jump start with a frozen battery can
cause it to rupture.
2. Turn off all the electricalaccessories: heater, A/C, climate
control, audio system, lights, etc.
Put the transmission in neutral or
Park, and set the parking brake.
If the Engine Won't Start, Jump Starting43208/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

4. If the temperature gauge stays atthe red mark, turn off the engine.
5. Look for any obvious coolant leaks, such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you find a leak, it
must be repaired before you
continue driving (see Emergency
Towing on page446).
6. If you do not find an obvious leak, check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
7. If there was no coolant in the reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the
temperature gauge, or lower,
before checking the radiator.
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
8. Using gloves or a large heavy cloth, turn the radiator cap
counterclockwise, without pushing
down, to the first stop. After the
pressure releases, push down on
the cap, and turn it until it comes
off. 9. Start the engine and set the
climate control to AUTO at ‘‘Hi. ’’
Add coolant to the radiator up to
the base of the filler neck. If you
do not have the proper coolant
mixture available, you can add
plain water. Remember to have the
cooling system drained and refilled
with the proper mixture as soon as
you can.
10. Put the radiator cap back on tightly. Run the engine, and check
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (see Emergency
Towing on page446).
11. If the temperature stays normal, check the coolant level in the
radiator reserve tank. If it has gone
down, add coolant to the MAX
mark. Put the cap back on tightly.
If the Engine Overheats
435
T aking Care of t he Unexpect ed
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2009 MDX

The tires on your vehicle meet all U.
S. Federal Safety Requirements. All
tires are also graded for treadwear,
traction, and temperature
performance according to
Department of Transportation (DOT)
standards. The following explains
these gradings.
Uniform Tire Quality Grading
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and
maximum section width. For
example:Treadwear 200
Traction AA
Temperature A
All passenger car tires must conform
to Federal Safety Requirements in
addition to these grades. Treadwear
The treadwear grade is a
comparative rating based on the wear
rate of the tire when tested under
controlled conditions on a specified
government test course. For
example, a tire graded 150 would
wear one and one-half (1 1/2) times
as well on the government course as
a tire graded 100. The relative
performance of tires depends upon
the actual conditions of their use,
however, and may depart
significantly from the norm due to
variations in driving habits, service
practices and differences in road
characteristics and climate.
Traction
The traction grades, from highest to
lowest, are AA, A, B, and C. Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on
specified government test surfaces of
asphalt and concrete. A tire marked
C may have poor traction
performance.
Warning: The traction grade
assigned to this tire is based on
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning, or peak
traction characteristics.DOT Tire Quality Grading (U.S. Vehicles)45408/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

The burning of gasoline in your
vehicle's engine produces several
byproducts. Some of these are
carbon monoxide (CO), oxides of
nitrogen (NOx), and hydrocarbons
(HC). Gasoline evaporating from the
tank also produces hydrocarbons.
Controlling the production of NOx,
CO, and HC is important to the
environment. Under certain
conditions of sunlight and climate,
NOx and HC react to form
photochemical‘‘smog. ’’Carbon
monoxide does not contribute to
smog creation, but it is a poisonous
gas. The Clean Air Act
The United States Clean Air Act
ꭧ
sets standards for automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
work and what to do to maintain
them. This section summarizes how
the emissions controls work.
Scheduled maintenance is on page
390.ꭧIn Canada, Acura vehicles comply
with the Canadian emission
requirements, as specified in an
agreement with Environment
Canada, at the time they are
manufactured. Crankcase Emissions Control
System
Your vehicle has a positive crankcase
ventilation system. This keeps
gasses that build up in the engine's
crankcase from going into the
atmosphere. The positive crankcase
ventilation valve routes them from
the crankcase back to the intake
manifold. They are then drawn into
the engine and burned.
Evaporative Emissions Control
System
As gasoline evaporates in the fuel
tank, an evaporative emissions
control canister filled with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is off. After
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
Emissions Controls46008/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

A
Accessories andModifications
..........................
330
ACCESSORY (Ignition Key Position)
.................................
129
Accessory Power Sockets
..........
166
AC Power Outlet
........................
167
Active Damper System
...............
361
AcuraLink
®(U.S. models
only)
.......................................
307
Additives, Engine Oil
.................
394
Advanced Airbags
.................. ......
29
Airbag (SRS)
............................
9, 24
Air Conditioning System
............
170
Rear A/C Control
....................
175
Air Outlets (Vents)
.....................
177
Air Pressure, Tires
.....................
415
Alcohol in Gasoline
....................
322
Antifreeze
...................................
396
Anti-lock Brakes (ABS) Indicator Light
..................
66, 357
Operation
................................
357
Anti-theft, Audio System
.............
235 Anti-theft Steering Column
Lock
.......................................
129
Audio System
..............
180, 181,200
Auto Control Mode, Starting
Engine
....................................
339
Automatic Climate Control
.........
170
Automatic Lighting
....................
118
Automatic Seat Belt Tensioners
.................. .............
22
Automatic Speed Control
...........
270
Automatic Transmission
............
341
Capacity, Fluid
........................
452
Checking Fluid Level
..............
399
Shifting
...................................
341
Shift Lever Position Indicators
............................
341
Shift Lever Positions
...............
342
Shift Lock Release
...................
346
Auxiliary Input Jack
...................
232
B
Battery Charging System Indicator
........................
65, 436 Jump Starting
..........................
432
Maintenance
...........................
421
Specifications
..........................
453
Before Driving
...........................
321
Belts, Seat
................................
8, 20
Beverage Holders
......................
163
Booster Seats
...............................
55
Brakes Anti-lock Brakes (ABS)
...........
357
Break-in, New Linings
.............
322
Bulb Replacement
...................
406
Fluid
.......................................
401
Parking
...................................
153
System Indicator
...............
65, 438
Wear Indicators
.......................
357
Braking System
..........................
356
Break-in, New Vehicle
................
322
Brightness Control, Instruments
............................
123
CONTINUED
Index
I
INDEX
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2009 MDX

Bulb ReplacementBack-up Lights
........................
407
Brake Lights
...........................
406
Front Parking Lights
...............
404
Front Side Marker Lights
........
404
Headlights
..............................
403
Rear Bulbs
..............................
406
Specifications
..........................
453
Taillights
.................................
406
Turn Signal Lights
..........
404, 406
Bulbs, Halogen
..........................
403
C
Cancel Button
............................
272
Capacities Chart
.........................
452
Carbon Monoxide Hazard
...... ......
58
Cargo
.........................................
332
Cargo Area Light
........................
161
Cargo Hook
................................
336
Cargo, How to Carry
..................
332
Carrying Cargo
..........................
332
CAUTION, Explanation of
...... .......
iii
CD Care
.....................................
229
Certification Label
......................
450 Chains, Tires
..............................
420
Changing a Flat Tire
..................
425
Changing Oil How to
....................................
394
When to
..................................
383
Charging System Indicator
...........................
65, 436
Checklist, Before Driving
...........
338
Childproof Door Locks
...............
131
Child Safety
..................................
37
Booster Seats
...........................
55
Child Seats
..........................
42, 45
Important Safety Reminders.....
41
Infants
......................................
42
Large Children
.........................
54
LATCH
.....................................
47
Risks with Airbags
...................
38
Small Children
.........................
43
Tethers
....................................
51
Where Should a Child Sit?
........
38
Child Seats
.............................
37, 45
LATCH Anchorage Points
........
47
Tether Anchorage Points
.........
51
Cleaning the Seat Belts
..............
409
Client Services
...........................
466
Climate Control System
.............
170 Clock
..........................................
236
Code, Audio System
...................
235
CO in the Exhaust
................
58, 460
Cold Weather, Starting in
...........
339
Compact Spare Tire
....................
424
Console Compartment
...............
164
Consumer Information (U.S. only)
.......................................
466
Controls, Instruments and
............
61
Coolant Adding
....................................
396
Checking
................................
326
Proper Solution
.......................
396
Temperature Gauge
.................
72
Crankcase Emissions Control System
...................................
460
Cruise Control Indicator
...............
70
Cruise Control Operation
...........
270
Cup Holders
...............................
163
Customize Settings
.. ....................
83
Door/Window Setup
...............
105
Lighting Setup
.........................
100
Meter Setup
.............................
89
Position Setup
..........................
97
Setting to Default
.....................
86
Wiper Setup
............................
113
IndexII08/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX