sensor Acura MDX 2009 Owner's Guide

The floor mats that came with your
vehicle hook over the floor mat
anchors. This keeps the floor mats
from sliding forward, possibly
interfering with the pedals, or
backwards, making the front
passenger's weight sensors
ineffective.
If you remove a floor mat, make sure
to re-anchor it when you put it back
in your vehicle.
If you use a non-Acura floor mat,
make sure it fits properly and that it
can be used with the floor mat
anchors. Do not put additional floor
mats on top of the anchored mats.
Front
Rear
Floor Mats41008/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Onboard Refueling Vapor
Recovery
The onboard refueling vapor
recovery (ORVR) system captures
the fuel vapors during refueling. The
vapors are adsorbed in a canister
filled with activated carbon. While
driving, the fuel vapors are drawn
into the engine and burned off.
Exhaust Emissions Controls
The exhaust emissions controls
include four systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These four systems work
together to control the engine's
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate from the crankcase and
evaporative emissions control
systems.
PGM-FI SystemThe PGM-FI system uses sequential
multiport fuel injection.It has three
subsystems: air intake, engine
control, and fuel control. The
powertrain control module (PCM)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
fuel to inject under all operating
conditions.Ignition Timing Control SystemThis system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.Exhaust Gas Recirculation (EGR)SystemThe exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manifold. Adding exhaust gas to the
air/fuel mixture reduces the amount
of NOx produced when the fuel is
burned.
Three Way Catalytic ConverterThe three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine's exhaust
to carbon dioxide (CO
2), nitrogen
(N
2), and water vapor.
Replacement Parts
The emissions control systems are
designed and certified to work
together in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Acura replacement parts or their
equivalent for repairs. Using lower
quality parts may increase the
emissions from your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more
information.
Emissions Controls
461
T echnical Inf ormat ion
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2009 MDX

Door Locks
..............................
11
Head Restraints
........................
14
Seat Belts
.................... ..........
8,15
Seats & Seat-Backs
..............
12, 13
Safety Labels, Location of
.............
59
Safety Messages
...........................
iii
Satellite Radio, XM
®............
185, 210
Seat Belts
.................................
8, 15
Additional Information
.............
20
Advice for Pregnant Women
....
18
Automatic Seat Belt Tensioners
.............. .............
22
Cleaning
...................... ............
409
Lap/Shoulder Belt
..............
15, 21
Maintenance
............................
23
Reminder Indicator and Beeper
.............................
20, 64
System Components
................
20
Use During Pregnancy
.............
18
Wearing a Lap/Shoulder Belt
.......................... .............
21
Seats
..........................................
140
Adjusting the Second Seat
.......
144
Folding the Second Seat
..........
144
Folding the Third Seat
............
145
Head Restraints
.......................
141 Heaters
...................................
148
Position Memory
....................
157
Third Row Access
...................
145
Seats, Adjusting the
...................
140
Security System
.........................
269
Sensors Driver's Seat Position Sensor
..................................
29
Front Passenger's Weight Sensors
............ ....................
29
Impact Sensors
...................
24, 25
Sequential SportShift Mode
........
343
Serial Number
............................
450
Service Intervals
.........................
383
Service Manual (U.S. only)
........
469
Service Station Procedures
........
323
SH-AWD
®
Indicator
...................................
69
Shifting the Automatic Transmission
..........................
341
Shift Lever Position
Indicators
...............................
341
Shift Lock Release
......................
346
Side Airbags
.................................
30
How the Side Airbag Off Indicator Works
...................
33 How Your Side Airbags
Work
....................................
30
Off Indicator
.............................
33
Side Curtain Airbags
....................
32
How Your Side Curtain Airbags Work
....................................
32
Side Marker Lights, Bulb Replacement in
.......................
404
Signaling Turns
........ ....................
67
Snow Tires
.................................
419
Sound System
.....................
180, 200
Spare Tire
................ ..................
424
Inflating
...........................
415, 424
Specifications
..........................
453
Spark Plugs
................................
453
Specifications
.............................
452
Speed Control
............................
270
Speed Limiter
.............................
346
Speedometer
................................
72
CONTINUED
Index
IX
INDEX
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2009 MDX

SRS, Additional Information
.........
24
Additional Safety Precautions
..........................
35
Airbag Service
..........................
35
Airbag System Components
.....
24
How the Side Airbag Off Indicator Works
...................
33
How the SRS Indicator Works
..................................
33
How Your Front Airbags Works
..................................
27
How Your Side Airbags
Work
....................................
30
How Your Side Curtain Airbags Work
....................................
32
SRS Indicator
.........................
33, 66
START (Ignition Key Position)
.................................
129
Starting the Engine
....................
339
Auto Control Mode
.................
339
In Cold Weather at High
Altitude
................................
340
With a Dead Battery
................
432
State Emissions Testing
.............
463
Steam Coming from Engine
.......
434 Steering Wheel
Adjustment
..............................
124
Anti-theft Column Lock
...........
129
Buttons
....................
233, 270,280
Position Memory
....................
157
Stereo Sound System
....................
180, 181,200
Storage Compartment................
164
Storing Your Vehicle
..................
422
Sunglasses Holder
.....................
165
Sun Visor
...................................
166
Super Handling-All Wheel Drive ™
(SH-AWD
®) System
................
348
Supplemental Restraint System
..............................
9,24
Servicing
.............. ....................
35
SRS Indicator
......................
33, 66
System Components
................
24
Synthetic Oil
..............................
394
T
Tachometer
..................................
72
Tailgate
......................................
131
Opening the
............................
131 Open Monitor
......................
....
11
Power
......................................
132
Taillights, Changing Bulbs in
............................................
406
Taking Care of the Unexpected
............................
423
Technical Descriptions DOT Tire Quality Grading (U.S. Vehicles)
.............................
454
Emissions Control Systems
.....
460
Three Way Catalytic Converter
............................
462
Tire Pressure Monitoring System (TPMS) －Required Federal
Explanation
......................
458
Temperature Gauge
.....................
72
Temperature, Inside Sensor
.......
179
Temperature, Outside
..................
76
Tensioners, Seat Belts
..................
22
Tether Anchorage Points
.............
51
Theft Protection, Radio
..............
235
Three Way Catalytic Converter
...............................
462
Tilt/Telescopic Steering Wheel
.....................................
124
Timing Belt
................................
402
IndexX08/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX