Start button Acura MDX 2017 Service Manual
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Continued383
uuWhen Driving uAuto Idle Stop*
Driving
The vehicle stops with the gear position in (D and the brake pedal depressed.
■Auto idle stop does  not activate when:
• The driver’s seat belt is not fastened.
• The engine coolant temperature is low or high.
• The transmission fluid temperature is low or high.
• The vehicle comes to a stop again befo re the vehicle speed reaches 3 mph (5 
km/h) after the engine starts.
• Stopped on a steep incline.
• A gear position other than 
(D.
• The engine is started with the hood open.
u Turn off the engine. Close the hood before  you restart the engine to activate 
Auto Idle Stop.
• The battery charge is low.
• The internal temperature of the ba ttery is 14°F (−10°C). or less.
• The climate control system is  in use, and the outside temperature is below −4°F 
(−20°C) or over 104°F (40°C).
• The climate control system temperature is set to the  Hi or  Lo.
•  is ON (indicator on).
• When the rear fan is set to maximum speed.
u Auto Idle Stop may not activate under  other conditions when the rear climate 
control system is in use.
■Auto Idle Stop Activates When:1 Auto Idle Stop Activates When:
When ACC with LSF is in operation, the vehicle stops 
without depressing the br ake pedal and Auto Idle 
Stop may activate.
Do not open the hood while the Auto Idle Stop 
function is activated. If  the hood is opened, the 
engine will not re start automatically.
In this case, restart the engine with the  ENGINE 
START/STOP button. 2 Starting the Engine  P. 367
Pressing the ENGINE START/STOP button changes 
the power mode to ACCESSORY even while Auto Idle 
Stop is in operation. Once  in ACCESSORY, the engine 
no longer restarts automatica lly. Follow the standard 
procedure to start the engine.
2 Starting the Engine  P. 367
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uuWhen Driving uAuto Idle Stop*
Driving
• The brake pedal is released (without the  automatic brake hold system activated).
• The accelerator pedal is depressed (with the automatic brake hold system 
activated).
2 Automatic Brake Hold  P. 432
■The engine restarts even if the brake pedal is depressed*1 when:
• The Auto Idle Stop  OFF button is pressed.
• When a steering wheel is operated.
• The gear position is change to 
(R or (S, or when it is change from (N to (D.
• The pressure on the brake pedal is reduced  and the vehicle starts moving while 
stopped on an incline.
• The pressure on the brake pedal is repeat edly applied and released slightly during 
a stop.
• The battery charge becomes low.
• The accelerator pedal is depressed.
• The driver’s seat belt is unlatched.
•  is ON (indicator on).
• The climate control system  is in use, and the difference between the set 
temperature and actual interior  temperature becomes significant.
• The climate control system  is being used to dehumidify the interior.
• The vehicle ahead of you starts again when  your vehicle stops automatically with 
ACC with LSF.
■The Engine Automatically Restarts When:1 The Engine Automatically Restarts When:
•If you are using an elec tronic device during Auto 
Idle Stop, the device may temporarily be turned off 
when the engine restarts.
1 The engine restarts even if the brake pedal is depressed*1 when:
*1: With the automatic brake hold system activated, 
you can release the brake pe dal during Auto Idle Stop 
is in operation.
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Continued413
uuWhen Driving uLane Keeping Assist System (LKAS)
Driving
3. Keep your vehicle near the center of the 
lane while driving.
u The dotted outer lines change to solid 
ones once the system starts operating 
after detecting the left and right lane 
markings.
To cancel the LKAS:
Press the  MAIN or LKAS button.
The LKAS is turned off every time you stop the 
engine, even if you turned it on the last time 
you drove the vehicle.
■To cancel
1 When the System can be Used
The LKAS temporarily deactivates when it fails to 
detect lane lines. When the system detects the lines 
again, it comes back on automatically.
1To cancel
Pressing the MAIN button also turns ACC with LSF 
on and off.
MAIN  Button
LKAS Button
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419
uuWhen Driving uVehicle Stability Assist (VSA ®), aka Electronic Stability Control (ESC), System
Driving
This button is on the driver side control panel. 
To partially disable VSA ® functionality/
features, press and hold it until you hear a 
beep.
The traction control stop s fully functioning, 
allowing the wheels to spin more freely at low 
speed. The VSA ® OFF indicator will also come 
on.
To restore VSA ® functionality/features, press 
the  (VSA ® OFF) button until you hear a 
beep.
VSA ® is turned on every time you start the 
engine, even if you turned it off the last time 
you drove the vehicle.
■VSA ® On and Off1 Vehicle Stability Assist (VSA ®), aka Electronic Stability Control 
(ESC), System
With the   button pressed, your vehicle will have 
normal braking and corn ering ability, but VSA® 
traction and stability  enhancement becomes less 
effective.
In certain unusual  conditions when your vehicle gets 
stuck in shallow mud or fr esh snow, it may be easier 
to free it with the VSA ® temporarily switched off.
When the   button is pressed, the traction control 
function becomes less effective. This allows for the 
wheels to spin more freely  at low speed. You should 
only attempt to free your vehicle with the VSA ® off if 
you are not able to free it when the VSA ® is on.
Immediately after  freeing your vehicle, be sure to 
switch VSA ® on again. We do not recommend driving 
your vehicle with the VSA ® system switched off.
You may hear a motor sound coming from the 
engine compartment while system checks are being 
performed immediately after starting the engine or 
while driving. This is normal.
VSA ® OFF Indicator
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uuBraking uBrake System
432
Driving
Keeps the brake applied after releasing the br ake pedal until the accelerator pedal is 
pressed. You can use this system while the vehicle is temporarily stopped, such as 
when you stop at a traffic light.
■Automatic Brake Hold1 Automatic Brake Hold
3WARNING
Activating the automatic brake hold system 
on steep hills or slippery roads may still 
allow the vehicle to  move if you remove 
your foot from the brake pedal.
If a vehicle unexpectedly moves, it may 
cause a crash resulting in serious injury or 
death.
Never activate the automatic brake hold 
system or rely on it  to keep a vehicle from 
moving when stopped on a steep hill or 
slippery roads.
3WARNING
Using the automatic brake hold system to 
park the vehicle may result in the vehicle 
unexpectedly moving.
If a vehicle moves unexpectedly, it may 
cause a crash, resulting in serious injury or 
death.
Never leave the vehicle when braking is 
temporarily kept by automatic brake hold 
and always park the vehicle by putting the 
transmission in 
( P and applying the parking 
brake.
■Turning on the system
Fasten your seat belt 
properly, then start the 
engine. Press the 
automatic brake hold 
button.
●The automatic brake 
hold system indicator 
comes on. The system 
is turned on.
■Activating the system
Depress the brake pedal 
to come to a complete 
stop. The transmission 
must be in 
( D or (N.●The automatic brake 
hold indicator comes 
on. Braking is kept for 
up to 10 minutes.
●Release the brake 
pedal after the 
automatic brake hold 
indicator comes on.
■Canceling the system
Depress the accelerator 
pedal while the 
transmission is in 
( D. 
The system is canceled 
and the vehicle starts to 
move.
●The automatic brake 
hold indicator goes 
off. The system 
continues to be on.
Accelerator PedalBrake PedalAutomatic Brake 
Hold Button
Goes 
Off
On On On
On
On
U.S.
Canada
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Continued439
uuBraking uCollision Mitigation Braking SystemTM (CMBSTM)
Driving
Press this button until  the beeper sounds to 
switch the system on or off.
When the CMBS
TM is off:
• The CMBSTM indicator in the instrument 
panel comes on.
• A message on the MID reminds you that the 
system is off.
The CMBS
TM is in the previously selected ON or 
OFF setting each time you start the engine.
■CMBSTM On and Off1 Collision Mitigation Braking SystemTM (CMBSTM)
The CMBS
TM may automatically shut off, and the 
CMBSTM indicator will come  and stay on under certain 
conditions:
2 CMBS
TM Conditions and Limitations  P. 440
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448
uuParking Your Vehicle uParking Sensor System*
Driving
■Parking sensor system on and off
With the power mode in ON, press the 
parking sensor system button to turn on or off 
the system. The indicator in the button comes 
on and the beeper sounds when the system is 
on.
The rear center and corner sensors start to 
detect an obstacle when  the transmission is in 
(R, and the vehicle speed is less than 5 mph 
(8 km/h).
The front corner sensors start to detect an 
obstacle when the transmission is not in 
(P, 
and the vehicle speed is  less than 5 mph (8 
km/h).
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501Continued
Maintenance
Remote Transmitter Care
Replacing the Button Battery
If the indicator does not come on when the button is pressed, replace the battery.
1. Remove the built-in key.
2. Remove the upper half of the cover by 
carefully prying on the edge with a coin.
u Remove carefully to avoid losing the 
buttons.
u Wrap a coin with a cloth to prevent 
scratching the transmitter.
3. Make sure to replace the battery with the 
correct polarity.
1Replacing the Button Battery
NOTICE
An improperly disposed of  battery can damage the 
environment. Always conf irm local regulations for 
battery disposal.
Replacement batteries are commercially available or 
at a dealer.
Models without remote control engine start system
Battery type: CR2032
Battery
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uuRemote Transmitter Care uReplacing the Button Battery
502
Maintenance
If the indicator does not come on when  the button is pressed, replace the battery.
1. Remove the built-in key.
u As a convenience, lightly place masking 
tape over the remote buttons to hold 
them in place.
2. Remove the upper half of the cover by 
carefully prying on the edge with a coin.
u Wrap a coin with a cloth to prevent 
scratching the transmitter.
3. Press down on the center of the assembly 
and remove the battery.
u When removing the button battery, be 
careful not to touch parts around it.
4. Make sure to replace  the battery with the 
correct polarity.
Models with remote control engine start system1 Replacing the Button Battery
NOTICE
The Remote transmitter  is equipped with two 
batteries: A standard  replaceable CR2032 coin 
button battery and an in tegral non-replaceable 
rechargeable battery. To prevent permanent damage 
to the rechargeable battery, replace the CR2032 
battery every three to four years.
Models with remote control engine start system
Battery type: CR2032
Battery
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uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire*
Handling the Unexpected
7. Press the inflator switch to turn on the 
compressor.
u The compressor starts injecting sealant 
and air into the tire.
u When the sealant injection is complete, 
continue to add air.
8. After the air pressure reaches 35 psi (240 
kPa), turn off the kit.
u To check the pressure, occasionally turn 
off the compressor and read the gauge.
9. Unplug the power plug from the accessory 
power socket.
10. Unscrew the sealant/ai r hose from the tire 
valve stem. Reinstall the valve cap.
11. Press the pressure relief button until the 
gauge returns to 0 psi (0 kPa).Pressure Gauge
ON
OFF
1Injecting Sealant and Air
If the required air pressure  is not reached within 10 
minutes, the tire may be too severely damaged for 
the kit to provide the necessa ry seal, and your vehicle 
will need to be towed.
See an Acura dealer for a replacement sealant bottle 
and proper disposal of an empty bottle.
Sealant/Air Hose
Valve Stem
Pressure Relief Button
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