engine Acura MDX 2011 Service Manual

4. Insert a key into the shift lockrelease slot.
5. Push down on the key while you press the release button on the
front of the shift lever and move
the shift lever out of Park to
neutral. 6. Remove the key from the shift lock
release slot, then reinstall the
cover. Make sure the notch on the
cover is on the driver's side. Press
the brake pedal, and restart the
engine.
If you need to use the shift lock
release, it means your vehicle is
developing a problem. Have the
vehicle checked by a dealer. Using the Paddle Shifters in the D
position (D-Paddle Shift Mode)
When you are driving in the D
position, pulling either paddle shifter
switches from the ordinary automatic
transmission [drive mode (D)] to the
D-paddle shift mode. You can shift
the transmission up or down
manually with the paddle shifters.
Downshifting gives you more power
when climbing, and provides engine
braking when going down a steep
hill.RELEASE
BUTTON
SHIFT LOCK RELEASE SLOT
PADDLE SHIFTERS
CONTINUED
Automatic Transmission, Driving with the Paddle Shifters
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To shift up or down, use the＋
(right) or －(left) paddle shifter on
either side of the steering wheel.
Each time you pull ＋(right), the
transmission shifts to a higher gear.
Pull －(left) to downshift. You will
see the selected gear number on the
instrument panel.When you pull either paddle shifter,
the gear position indicator shows you
the selected gear number. The transmission control system
monitors the accelerator pedal use
and your driving conditions. When
you press the accelerator pedal as in
normal driving, the system judges
that you are driving at a constant
cruising speed without using the
paddle shifters. Under these
conditions, D-paddle shift mode is
canceled, and the transmission
automatically returns to drive mode
(D).
Hold the
＋(right) paddle shifter for
2 seconds to return to drive mode
(D).
When the transmission returns to
drive mode (D), the displayed gear
number goes out.
The transmission remains in the
selected gear if you do not
accelerate. Each time you pull either paddle
shifter, the transmission shifts one
gear up or down. If you want to shift
up or down more than two gears, pull
the paddle shifter twice, pause, and
then pull it again.
The automatic transmission will not
allow you to shift up or down if:
●
You downshift before the engine
speed reaches the highest
threshold of the lower gear.
If you try to do this, the gear
position indicator will flash the
number of the lower gear several
times, then return to a higher gear.
●
You upshift before the engine
speed reaches the lowest
threshold of the higher gear.
●
You press both paddle shifters at
the same time.
GEAR POSITION INDICATOR
Driving with the Paddle Shifters44210/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

To upshift, pull the＋(right) paddle
shifter. To downshift, pull the －
(left) paddle shifter.
When you accelerate from a stop, the
transmission starts in first gear, and
shifts from first to second
automatically. You must manually
upshift between second and sixth
gears. Make sure you upshift before
the engine speed reaches the
tachometer's red zone.
The transmission remains in the
selected gear (6, 5, 4, 3, or 2). There
is no automatic downshift when you
push the accelerator pedal to the
floor.
When you are driving, the
transmission downshifts to the lower
gear under the following conditions:●
The vehicle slows down to a
certain speed.
●
You press the brake pedal. Downshifting with the paddle shifter
allows you to increase the engine
braking when going down steep or
long hills, and provides more power
when climbing uphills. You can
upshift the transmission manually to
reduce the rpm.
The transmission also shifts
automatically as the vehicle comes to
a complete stop. It downshifts to first
gear when the vehicle speed reaches
6 mph (9 km/h) or less.
The automatic transmission will not
allow you to shift up or down if:
●
You downshift before the engine
speed reaches the highest
threshold of the lower gear.
If you try to do this, the gear
position indicator will flash the
number of the lower gear several
times, then return to a higher gear.
●
You cannot upshift with the paddle
shifter before the engine speed
reaches the lowest threshold of the
higher gear.
●
You try to shift to third or a higher
gear when the vehicle is
stationary.
●
You press both paddle shifters at
the same time.
●
You press one of the two paddle
shifters while another paddle
shifter is being pressed.
●
The vehicle detects that you are
driving uphill or downhill.
Driving with the Paddle Shifters44410/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

Starting in Second GearWhen you are in sequential shift
mode, and the vehicle is stopped,
pull the＋(right) paddle shifter to
shift to second gear. You will see ‘‘2’’
in the display. Starting in second
gear helps to reduce wheelspin in
deep snow or on a slippery surface. Recommended Shift Points
Drive in the highest gear that lets the
engine run and accelerate smoothly.
This will give you good fuel economy
and effective emissions control. The
following shift points are
recommended:
Shift Up Normal acceleration
1st to 2nd
2nd to 3rd
3rd to 4th4th to 5th
5th to 6th 15 mph (24 km/h)
25 mph (40 km/h)
40 mph (64 km/h)
45 mph (72 km/h)
50 mph (80 km/h)
Driving with the Paddle Shifters
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The super handling-all wheel drive
(SH-AWD) system is a full time all-
wheel-drive system that
automatically controls and transfers
varying amounts of engine torque to
all wheels independently, according
to the driving conditions.
While the SH-AWD system helps to
enhance the vehicle's driving
stability in all situations, it is still
your responsibility to drive and
corner at reasonable speeds and to
leave a sufficient margin of safety.SH-AWD Torque Distribution
Monitor
The SH-AWD torque distribution
monitor on the multi-information
display shows you the amount of
torque being sent to the wheels.
Each wheel-right front (RF), left front
(LF), right rear (RR), and left rear
(LR)-has its own torque indicator.Each torque indicator is displayed as
a bar graph divided into 5 segments.
The number of segments represents
the amount of torque distributed to
each wheel.
When there is only a slight change in
torque distribution while driving,
such as cruising on level roads at the
same speed, the torque distribution
monitor may stop displaying the
amount of torque. This is not a
system problem. The monitor will
show the amount if the system
senses any change in torque
distribution.
TORQUE INDICATOR
TORQUE INDICATOR
Super Handling-All Wheel Drive
™(SH-AWD
®) System
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If the SH-AWD indicator blinks while
driving, it indicates the differential
temperature is too high. You will also
see an‘‘SH-AWD DIFF TEMP.
HIGH ’’message on the multi-
information display. If this happens,
pull to the side of the road when it is
safe, shift to Park, and let the engine
idle until the indicator goes out. If
the indicator does not go out, take
your vehicle to a dealer to have it
checked.
If the SH-AWD indicator on the
instrument panel stays on, and the
‘‘ CHECK SH-AWD SYSTEM ’’
message also appears on the multi-
information display, there is problem
with the SH-AWD system. Your vehicle still has normal front-
wheel drive with vehicle stability
assist (VSA), but does not have the
advantages of SH-AWD. Have your
vehicle checked by a dealer as soon
as possible.
Super Handling-All Wheel Drive
™(SH-AWD
®) System
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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 545).
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.
CONTINUED
Tire Pressure Monitoring System (TPMS)
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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 forcompliance could void the user's
authority to operate the equipment.This device complies with IndustryCanada Standard RSS-210.
Operation is subject to the following twoconditions: (1) this device may not cause
interference, and (2) this device mustaccept any interference that may causeundesired operation of the device.
Braking System
Your vehicle is equipped with disc
brakes at all four wheels. A power
assist helps reduce the effort needed
on the brake pedal. The emergency
brake assist system increases the
stopping force when you depress the
brake pedal hard in an emergency
situation. The anti-lock brake system
(ABS) helps you retain steering
control when braking very hard.
Resting your foot on the pedal keeps
the brakes applied lightly, builds up
heat, and reduces their effectiveness
and reduces brake pad life. In
addition, fuel economy can be
reduced. It also keeps your brake
lights on all the time, confusing
drivers behind you. Constant application of the brakes
when going down a long hill builds
up heat and reduces their
effectiveness. Use the engine to
assist the brakes by taking your foot
off the accelerator and downshifting
to a lower gear.
Check the brakes after driving
through deep water. Apply the
brakes moderately to see if they feel
normal. If not, apply them gently and
frequently until they do. Be extra
cautious in your driving.
Tire Pressure Monitoring System (TPMS), Braking System45410/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

OverviewIf equippedThe collision Mitigation braking
system™(CMBS ™) can assist the
driver when there is a possibility of
colliding with the vehicle in front of
yours. It is designed to reduce the
speed of your vehicle before an
unavoidable collision occurs and, if
possible, to alert you to a potential
collision while there is time for the
driver to prevent it. Here is a brief
description of what the CMBS can
do: When your speed is above 10 mph
(15 km/h), the CMBS is monitoring
the vehicle ahead of you with radar.
When your vehicle is approaching
the vehicle ahead of yours too
quickly, the system may activate one
or more of the following: a visual
alert, an audible alert, apply the
brakes and e-pretensioners to tighten
the front seat belts - first as a
warning, then to prepare for an
impending crash. (see page 24).
The CMBS consists of a radar sensor
in the front grille, a brake actuator in
the engine compartment, an
indicator on the instrument panel,
seat belt e-pretensioners on the front
seats, and an on/off button on the
dashboard.RADAR SENSOR
BRAKE
ACTUATOR SEAT BELT
e-PRETENSIONERS
CONTINUED
Collision Mitigation Braking System
™(CMBS™ )
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The vehicle stability assist (VSA)
system helps to stabilize the vehicle
during cornering if the vehicle turns
more or less than desired. It also
assists you in maintaining traction
while accelerating on loose or
slippery road surfaces. It does this by
regulating the engine's output and by
selectively applying the brakes.
When VSA activates, you may notice
that the engine does not respond to
the accelerator in the same way it
does at other times. There may also
be some noise from the VSA
hydraulic system. You will also see
the VSA system indicator blink.
The VSA system cannot enhance the
vehicle's driving stability in all
situations and does not control your
vehicle's entire braking system. It is
still your responsibility to drive and
corner at reasonable speeds and to
leave a sufficient margin of safety.
VSA Off Indicator
When VSA is off, the VSA off
indicator comes on as reminder.Vehicle Stability Assist
(VSA) System Indicator
When VSA activates, you will see the
VSA system indicator blink.
If this indicator comes on while
driving, pull to the side of the road
when it is safe, and turn off the
engine. Reset the system by
restarting the engine. If the VSA
system indicator stays on or comes
back on while driving, have the VSA
system inspected by your dealer.
NOTE: The main function of the VSA
system is generally known as
Electronic Stability Control (ESC).
The system also includes a traction
control function. If the indicator does not come on
when the ignition switch is turned to
the ON (II) position, there may be a
problem with the VSA system. Have
your dealer inspect your vehicle as
soon as possible.
CONTINUED
Vehicle Stability Assist (VSA
®), aka Electronic Stability Control (ESC), System
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