Page 125 of 609
When your selection is successfully
completed, the display changes as
shown above, and then goes back to
the customize item screen.
If the‘‘SETTING INCOMPLETE ’’
message appears, go back to
‘‘ KEYLESS LOCK
ACKNOWLEDGMENT ’’and repeat
the procedure again.
Security Relock TimerIf you unlock the doors and the
tailgate with the remote transmitter,
but do not open any of the doors or
the tailgate within 30 seconds, the
doors and the tailgate automatically
relock and the security system sets.
You can change this relock time from
30 seconds to 60 or 90 seconds.
You can choose this customize item
from ‘‘DOOR/WINDOW SETUP ’’by
pressing the INFO (
/
) button
repeatedly.
Multi-Information Display12010/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu
Page 140 of 609

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.
KEY
NUMBER
TAG MASTER KEY
WITH REMOTE
TRANSMITTER VALET KEY
(Light Gray)
CONTINUED
Keys and Locks
135
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Page 141 of 609
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 may
prevent the engine from starting.
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
Push
Keys and Locks13610/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu
Page 144 of 609

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
118.
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 page 115.
When you shift to P after driving, the
driver's door unlocks.
To change the ‘‘AUTO DOOR
UNLOCK ’’setting, see page 116.
UNLOCK
LOCK
LOCK
UNLOCK
CONTINUED
Door Locks
139
Instruments and Controls
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Page 146 of 609

Power TailgateThe tailgate can be opened and closed
with the remote transmitter (see page
144) or the switch in the driver's door
pocket when both front doors are
unlocked.
Press and hold the tailgate button on the
remote transmitter or the switch for
about 1 second to open or close the
tailgate. Each time you press the button
on the remote transmitter or the switch,
you will hear a beep, and some front and
rear lights will flash.
If you push the same button or
switch again while the tailgate is
opening or closing, you will hear
three beeps, and the tailgate will stop
moving, reverse direction, and stop
at the fully opened or closed position.
The tailgate can also be closed by
pressing the button on the tailgate. If
you press the button again while the
tailgate is closing, you will hear three
beeps, and the tailgate will stop
moving, reverse direction, and stop
at the fully opened position.
POWER TAILGATE SWITCH
TAILGATE SWITCH
CONTINUEDTailgate
141
Instruments and Controls
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Page 149 of 609

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 page 119. 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
118.
To change the ‘‘SECURITY RELOCK
TIMER ’’setting, see page 120. The door activated spotlights come
on when you press the UNLOCK
button if the door activated position
is selected by pressing the light
control button (DOOR). If you do not
open any door within 30 seconds (or
whatever setting of the interior light
dimming time is set to), the lights
will fade out. If you relock the doors
with the remote transmitter before 30
seconds have elapsed, the lights will
go off immediately.
TAILGATE
-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.
UNLOCK
BUTTON LOCK
BUTTON
PANIC
BUTTON
TAILGATE
BUTTON
Remote Transmitter14410/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu
Page 150 of 609

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 Transmitter Care●
Avoid dropping or throwing the
transmitter.
●
Protect the transmitter from
extreme temperature.
●
Do not immerse the transmitter in
any liquid.
●
If you lose a transmitter, the
replacement needs to be
reprogrammed by your dealer.
Replacing the Transmitter Battery
If it takes several pushes on the
button to lock or unlock the doors
and the tailgate, replace the battery
as soon as possible.
Battery type: CR1616
To replace the battery:
1. Remove the screw at the base of the transmitter with a small
Phillips-head screwdriver.
NOTE: Be careful when removing
this screw as the head of the screw
can strip out.
2. Separate the keypad from the transmitter by pushing any button
from outside.
SCREW KEYPAD
CONTINUED
Remote Transmitter
145
Instruments and Controls
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Page 151 of 609

3. Place a cloth on the edge of thekeypad, and remove the upper half
by carefully prying on the edge
with a small flat-tip screwdriver. 4. Remove the old battery and note
the polarity. Make sure the
polarity of the new battery is the
same (- side facing up), then
insert it in the keypad.
An improperly disposed of battery
can hurt the environment.
Always confirm local regulations
for battery disposal.
5. Snap the two halves of the keypad, then install the parts in reverse
order.
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.
BATTERYRemote Transmitter14610/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu