2009 Acura MDX key

The master key fits all the locks on
your vehicle. The valet key works
only in the ignition and the driver's
door lock. You can keep the glove
box locked when you leave your
vehicle and the valet key at a parking
facility.
You should have received a key
number tag with your keys. You will
need this key number if you ever
have to get a lost key replaced. Use
only Acura-approved key blanks.These keys contain electronic
circuits that are activated by the
immobilizer system. They will not
work to start the engine if the circuits
are damaged.
●Protect the keys from direct
sunlight, high temperature, and
high humidity.●Do not drop the keys or set heavy
objects on them.●Keep the keys away from liquids.
If they get wet, dry them
immediately with a soft cloth.
The valet key does not contain a
battery. Do not try to take it apart.
Models without power tailgate KEY
NUMBER
TAG
MASTER KEY
WITH REMOTE
TRANSMITTER
VALET KEY
(Light Gray)
KEY
NUMBER
TAGMASTER KEY
WITH REMOTE
TRANSMITTER VALET KEY
(Light Gray)
Models with power tailgate
Keys and Locks12608/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Retractable Master KeyThe master key can be retracted into
the remote transmitter. To use the
key, push the release button to
release the key from the transmitter.
The key should be fully extended. To
retract the key, push the release
button and at the same time push the
key into the remote transmitter until
it is securely latched.Always use the fully-extended key
when you insert it to the ignition
switch. If the key does not fully
extend, the immobilizer system may
not operate properly and prevents
from starting the engine.
The key may come in contact with
your finger while being retracted or
extended. Make sure your fingers do
not touch the pivot of the key when
retracting or extending the key.RELEASE BUTTON
Models with power tailgate shown Push
Keys and Locks
127
Inst rument s and Cont rols
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2009 MDX

The Immobilizer System protects
your vehicle from theft. If an
improperly coded key (or other
device) is used, the engine's fuel
system is disabled.
When you turn the ignition switch to
the ON (II) position, the immobilizer
system indicator should come on
briefly, then go off. If the indicator
starts to blink, it means the system
does not recognize the coding of the
key. Turn the ignition switch to the
LOCK (0) position, remove the key,
reinsert it, and turn the ignition
switch to the ON (II) position again.
The system may not recognize your
key's coding if another immobilizer
key or other metal object (i.e. key
fob) is near the ignition switch when
you insert the key.If the system repeatedly does not
recognize the coding of your key,
contact your dealer.
Do not attempt to alter this system or
add other devices to it. Electrical
problems could result that may make
your vehicle inoperable.
If you have lost your key and you
cannot start the engine, contact your
dealer.
Always take the ignition key with you
whenever you leave the vehicle alone.
As required by the FCC:
This device complies with Part 15 of theFCC rules. Operation is subject to the
following two conditions: (1) This devicemay not cause harmful interference, and(2) this device must accept any
interference received, includinginterference that may cause undesiredoperation.
Changes or modifications not expresslyapproved by the party responsible for
compliance could void the user'sauthority to operate the equipment.
This device complies with IndustryCanada Standard RSS-210.
Operation is subject to the following twoconditions: (1) this device may not causeinterference, and (2) this device must
accept any interference that may causeundesired operation of the device.
Immobilizer System12808/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

The ignition switch has four
positions: LOCK (0), ACCESSORY
(I), ON (II), and START (III).
LOCK (0)－You can insert or
remove the key only in this position.
To turn the key to the LOCK (0)
position, the shift lever must be in
Park, and you must push the key in
slightly.
If the front wheels are turned, the
anti-theft lock may make it difficult to
turn the key. Firmly turn the steering
wheel to the left or right as you turn
the key. ACCESSORY (I)
－You can operate
the audio system and the accessory
power sockets in this position.
ON (II) －This is the normal key
position when driving. Several of the
indicators on the instrument panel
come on as a test when you turn the
ignition switch from the
ACCESSORY (I) to the ON (II)
position.
START (III) －Use this position
only to start the engine. The switch
returns to the ON (II) position when
you let go of the key. You will hear a reminder beeper if
you leave the key in the ignition
switch in the LOCK (0) or the
ACCESSORY (I) position and open
the driver's door. Remove the key to
turn off the beeper.
The shift lever must be in Park
before you can remove the key from
the ignition switch.
Ignition Switch
129
Inst rument s and Cont rols
08/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

To lock all doors and the tailgate,
press the bottom of the master door
lock switch on either front door, pull
the lock tab above the driver's door
handle, or use the key on the outside
lock on the driver's door.
Pressing the top of either master
door lock switch will unlock all doors
and the tailgate.
The lock tab on any passenger's door
locks and unlocks that door.
All doors and the tailgate can be
locked from the outside by using the
key in the driver's door lock. To
unlock only the driver's door, insert
the key, turn the key, and release it.
The remaining doors and the tailgate
unlock when you turn the key a
second time within a few seconds.To change the
‘‘KEY AND REMOTE
UNLOCK MODE ’’setting, see page
109.
When the vehicle speed reaches
about 10 mph (about 16 km/h) or
more, all the doors lock
automatically.
To change the ‘‘AUTO DOOR
LOCK ’’setting, see page106.
When you shift to P after driving, the
driver's door unlocks.
To change the ‘‘AUTO DOOR
UNLOCK ’’setting, see page107.
UNLOCK
LOCK
LOCK
UNLOCK
Door Locks13008/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Lockout PreventionWith any door and the tailgate open
and the key in the ignition, both
master door lock switches are
disabled. They are not disabled if all
the doors and the tailgate are closed.
If you try to lock an open driver's
door by pulling the lock tab rearward
the lock tab on the driver's door pops
out.Childproof Door Locks
The childproof door locks are
designed to prevent children seated
in the rear from accidentally opening
the rear doors. Each rear door has a
lock lever near the edge. With the
lever in the LOCK position (lever is
down), the door cannot be opened
from the inside regardless of the
position of the lock tab. To open the
door, push the lock tab forward and
use the outside door handle.Tailgate
To open the tailgate, push up inside
the handle, then lift up. To close the
tailgate, use the inner handle to pull
it down, then press down on the back
edge.
Keep the tailgate closed at all times
while driving to avoid damaging the
tailgate and to prevent exhaust gas
from getting into the interior. See
Carbon Monoxide Hazard
on page
58.
LOCK
Door Locks, Tailgate
131
Inst rument s and Cont rols
08/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

Models without power tailgateIf you cannot open the tailgate,
remove the cover on the back of the
tailgate (see page134).Push the
release lever to the right as shown,
then pull the outer handle to open
the tailgate.Remote Transmitter
LOCK
－Press this button once to
lock all doors and the tailgate. Some
exterior lights will flash. When you
push LOCK twice within 5 seconds,
you will hear a beep to verify that the
doors and tailgate are locked and the
security system has set. This button
does not work if any door or tailgate
is not fully closed.
To change the ‘‘KEYLESS LOCK
ACKNOWLEDGEMENT ’’setting,
see page110.
Models without power tailgate
UNLOCK
BUTTON LOCK
BUTTON
PANIC
BUTTON
Models with power tailgate
UNLOCK
BUTTON LOCK
BUTTON
PANIC
BUTTON
TAILGATE
BUTTON
CONTINUED
Tailgate, Remote Transmitter
135
Inst rument s and Cont rols
08/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX

UNLOCK－Press this button once
to unlock the driver's door. Push it
twice to unlock the other doors.
Some exterior lights will flash twice
when you push the button. If you do
not open any door or the tailgate
within 30 seconds, they will
automatically relock.
To change the ‘‘KEY AND REMOTE
UNLOCK MODE ’’setting, see page
109.
To change the ‘‘SECURITY RELOCK
TIMER ’’setting, see page111. When you press the UNLOCK
button, the front and rear individual
map lights and the cargo area light,
depending on their switch positions,
will come on (see page160).If you
do not open any door or the tailgate,
the lights stay on for about 30
seconds, then go out. If you relock
the doors and the tailgate with the
remote transmitter before 30 seconds
have elapsed, the lights will go off
immediately.
Models with power tailgateTAILGATE
－Press and hold the
TAILGATE button to open or close
the power tailgate. When the tailgate
begins to move, you will hear a beep,
and some front and rear lights will
flash. If you push the same button again
while the tailgate is opening or
closing, three beeps sound, the
tailgate stops moving, reverses
direction and stops in the fully
opened or fully closed position.
PANIC
－Press and hold this
button for about 1 second to attract
attention; the horn will sound, and
the exterior lights will flash for about
30 seconds. To cancel panic mode,
press any other button on the remote
transmitter, or turn the ignition
switch to the ON (II) position. Panic
mode does not work when the key is
in the ignition switch.
Remote Transmitter13608/06/06 16:58:07 09 ACURA MDX MMC North America Owner's M 50 31STX620 enu
2009 MDX