steering Acura MDX 2019 Repair Manual

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uuTowing a Trailer uTowing Preparation
Driving
■To estimate the tongue load
Excessive tongue load reduces front tire traction and steering control. Too little
tongue load can make the trailer unstable and cause it to sway.
You can estimate the tongue load by meas uring the trailer hitch height from the
ground in the following steps:
1. Park the vehicle on level ground.
2. Measure the distance between the ground and the bottom of the trailer hitch.
3. Connect the fully loaded trailer to the hitch.
4. Measure the distance between the ground and the bottom of the trailer hitch
again.
5. Subtract the second measurement from th e first measurement, then refer to the
following table.
If the difference becomes more than indicated in the table, distribute the load or
remove cargo as needed.
If the difference isAWD models2WD models
1 inches (2.5 cm)150 lbs (68 kg)
1 1/2 inches (3.8 cm)250 lbs (114 kg)
2 inches (5.1 cm)350 lbs (159 kg)
2 3/8 inches (6.0 cm)450 lbs (205 kg)—
2 5/8 inches (6.7 cm)500 lbs (227 kg)—
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462
uuTowing a Trailer uTrailer Stability Assist
Driving
Trailer Stability Assist
Helps to stabilize the vehicle and tra iler when the trailer severely sways.
■How trailer stability assist works
When the vehicle and trailer become unstab le while driving, trailer stability assist
determines the cause. If the trailer oscill ation is detected as the cause, and the
swaying increases, the system applies the brak es or controls engine output to reduce
vehicle speed.
Both the vehicle and trailer brake lights come on automatically if you brake to
reduce vehicle speed.
1 Trailer Stability Assist
Trailer stability assist is not a function that prevents
the vehicle and trailer from swaying. Avoid high
speeds, abrupt steering, improper trailer load, and
sudden braking to keep the trailer from swaying.
When swayed too severely, the system becomes
ineffective, and you may lose control of your vehicle,
causing the trailer to roll over or get damaged. 2 Driving Safely with a Trailer P. 463
Trailer towing sway is caused by:
•Crosswinds
•Improper towbar down load
•Excessive Speed
The VSA ® system indicator blinks during the trailer
stability assist operation. 2 VSA ® Operation P. 520
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Continued471
uuWhen Driving uStarting the Engine
Driving
1Remote Engine Start with Vehicle Feedback*
While the engine is running, the vehicle will
automatically preconditi on inside the vehicle.
When it is warm outside:
•The climate control system is activated in
recirculation mode.
•The seat ventilation* is activated.
When it is cold outside:
•The defroster is activated at a moderately warm
temperature.
•The rear defogger and door mirror heaters are
activated.
•The seat heaters and heated steering wheel are
activated*.
2 Heated Steering Wheel* P. 217
2 Front Seat Heaters and Seat
Ventilation
* P. 218, 219
* Not available on all models
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473
uuWhen Driving uPrecautions While Driving
Driving
Precautions While Driving
Utility vehicles have a significantly higher rollover rate than other types of vehicles.
To prevent rollovers or loss of control:
• Take corners at slower speeds than yo u would with a passenger vehicle.
• Avoid sharp turns and abrupt maneuvers whenever possible.
• Do not modify your vehicle in any way th at you would raise the center of gravity.
• Do not carry heavy cargo on the roof.
Never carry more than 165 lbs (75 kg) of ca rgo on the roof rack (Acura accessory).
Avoid driving in deep water and on flooded roads. This can damage the engine or
driveline, or cause electrical component failure.
If there is a strong impact with something under the vehicle, stop in a safe location.
Check the underside of the vehicle for damage or any fluid leaks.
■Driving Guidelines for Your Utility Vehicle
■In Rain
■Other Precautions
1 Precautions While Driving
NOTICE
Do not change the gear position while pressing the
accelerator pedal. You could damage the
transmission.
NOTICE
If you repeatedly turn the steering wheel at an
extremely low speed, or hold the steering wheel in
the full left or right position for a while, the system
heats up. The system goes into a protective mode,
and limits its performa nce. The steering wheel
becomes harder and harder to operate. Once the
system cools down, the EPS system is restored.
Repeated operation under these conditions can
eventually damage the system.
If the power mode is set to ACCESSORY while
driving, the engine will shut down and all steering
and brake power assist functi ons will stop, making it
difficult to control the vehicle.
Do not change the gear position to
( N, as you will
lose engine braking (and acceleration) performance.
During the first 600 miles (1,000 km) of operation,
avoid sudden acceleration or full throttle operation so
as not to damage the engine or powertrain.
Avoid hard braking for the first 200 miles (300 km).
You should also follow this when the brake pads are
replaced.
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481
uuWhen Driving uShifting
Continued
Driving
Use the paddle shifters to change between 1st and 9th gears without releasing your
hands from the steering wheel. The transmission will switch to the sequential mode.
■When the transmission is in (D:
The vehicle will go into th e sequential mode momentarily , and the sequential mode
gear selection indicator will come on.
Once you start traveling at a constant speed, the sequential mode will automatically
switch off, and the sequential mode gear selection indicator will go off.
Hold the
(+ paddle shifter for two seconds or push the button to return to
normal drive.
■When the transmission is in (S
The vehicle will go into th e sequential mode, and the M (sequential mode) indicator
and sequential mode gear selection indicator will come on.
If the vehicle speed increases and the engi ne speed reaches near the tachometer’s
red zone, the transmission automatically shifts up to the next gear.
You can cancel this mode by holding the
(+ paddle shifter for two seconds or push
the button. When the se quential mode is canceled, the sequential mode
indicator and sequential mode gear selection indicator will turn off.
■Sequential Mode
D/S
D/S
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486
uuWhen Driving uAuto Idle Stop
Driving
■Auto Idle Stop may not activate when:
• The vehicle is stopped by braking suddenly.
• The steering wheel is operated.
• The fan speed is high.
• Altitude is high.
• The vehicle is repeated ly accelerated and dece lerated at a low speed.
• The climate control system is in use, and there is a significant difference between
the set temperature and the actual interior temperature.
• The climate control system is in use, and humidity in the interior is high.
• The rear fan is set to maximum speed.
u Auto Idle Stop may not ac tivate under other conditions when the rear climate
control system is in use.
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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. 535
■The engine restarts even if the brake pedal is depressed*1 when:
• The Auto Idle Stop OFF button is pressed.
• A steering wheel is operated.
• The transmission is put into
(R or (S, or when it is set from (N to (D.
u If you put the tra nsmission into
(P after the Auto Idle Stop activates, the Auto
Idle Stop continues to operate. In this case, the engine restarts when you
change the gear position other than
(P. When changing the gear position, the
brake pedal must be firmly depressed.
• 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 electroni c device during Auto Idle
Stop, the device may tempor arily 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.
If the automatic brake hold system has been turned
off, or if there is a problem with the system, the
engine will restart automatically when you release
the brake pedal.
2 Automatic Brake Hold P. 535
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489
uuWhen Driving uIntegrated Dynamics System
Driving
Integrated Dynamics System
Modifies the dynamic characte r of the vehicle. There are three modes to select from:
Comfort, Normal, and Sport.
Press the Dynamic Mode button to select a mode. The mode you have selected
appears on the MID.
You can customize the mode default setting using the MID.
2 Customized Features P. 126, 360
Normal
Balanced driving
performance for most
driving situations.
Sport
Enhances vehicle response
feel through decreased
steering assist, heightened
throttle response, increased
SH-AWD
* torque bias, and
modified active sound
control. Comfort
Maximizes driver comfort
through increased steering
assist.
Dynamic Mode
Button
* Not available on all models
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Continued493
uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
Driving
■How to activate the system1Adaptive Cruise Control (ACC) with Low Speed Follow (LSF)
When the MAIN button is pressed, both ACC with
LSF and the Lane Keeping Assist System (LKAS) are
either turned on or off.
ACC with LSF may not work properly under certain
conditions. 2 ACC with LSF Conditions and Limitations
P. 498
When not using ACC with LSF: Turn off adaptive
cruise by pressing the MAIN button. This also will
turn off the Lane Keeping Assist System (LKAS).
Do not use ACC with LSF under the following
conditions.
•On roads with heavy traf fic or while driving in
continuous stop and go traffic.
•On roads with sharp turns.
•On roads with steep downhill sections, as the set
vehicle speed can be exceeded by coasting. In such
cases, ACC with LSF will not apply the brakes to
maintain the set speed.
•On roads with toll collection facilities or other
objects between lanes of traffic, or in parking
areas, or faci lities with driv e through access.
■Press the MAIN button on
the steering wheel. ACC
(green) is on in the
instrument panel.
ACC with LSF is ready to
use.
How to use
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uuWhen Driving uAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
500
Driving
Increase or decrease the vehicle speed using the RES/+/SET/– switch on the steering
wheel.
• Each time you press the switch up or do wn, the vehicle speed is increased or
decreased by about 1 mph or 1 km/h accordingly.
• If you keep the switch pressed up or down, the vehicle speed increases or
decreases by about 5 mph or 5 km/h accordingly.
■To Adjust the Vehicle Speed1 To Adjust the Vehicle Speed
If a vehicle detected ahead is going at a speed slower
than your increased set speed, ACC with LSF may not
accelerate your vehicle. This is to maintain the set
interval between your vehi cle and the vehicle ahead.
You can switch the displayed set speed
measurements on the MID between mph and km/h. 2 Customized Features P. 126, 360
To increase speed
To decrease speed
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