2024 MAZDA CX90 cruise control

Radar Sensors*
The radar sensor detects objects by
sending radio waves in a specific
direction and receiving the reflected
waves back.
Ve h i c l e f ro n t
1. Front radar sensor*
2. Front side radar sensors*

Ve h i c l e rea r
1. Rear side radar sensors*
CAUTION
 Heed the following cautions so that
the radar sensors can function
normally.
 Do not modify the suspensions.
 Always use tires of the specified
size and the same manufacturer,
brand, and tread pattern on all 4
wheels. In addition, do not use
tires with significantly different
wear patterns or tire pressures on
the same vehicle (including
temporary spare tire).
Do not spray highly pressurized
water against the radar sensors or
rub them strongly.
 Do not apply stickers on parts near
the radar sensors.
 If foreign matter adheres to parts
near the radar sensors, remove it
and switch the vehicle power OFF.
The foreign matter detection status
is reset by switching the vehicle
power OFF.
 Consult an Authorized Mazda
Dealer if you need to repair,
replace, or paint parts near the
radar sensors.
 Do not install any parts that cover
the front of the radar sensors.
 Do not replace the radiator grille
and emblem with anything other
than genuine products.
 If strong force is applied to parts near
the radar sensors, the direction of
the radar sensor may become
deviated and each system may not
operate normally. Stop each system
immediately and have the vehicle
inspected by an Authorized Mazda
Dealer.
NOTE
The radar sensors include a function
for detecting abnormalities in the
sensor, soiling of the sensor’s front
surface, and informing the driver. If a
message appears on the screen that
can be addressed, follow the
directions of the message.
Front radar sensor
The following systems utilize the front
radar sensor.
Distance & Speed Alert (DSA)Mazda Radar Cruise Control
(MRCC)
Cruising & Traffic Support (CTS)
Driving
Radar Sensors
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Mazda Radar CruiseControl (MRCC)
*
MRCC is a system that reduces load on
the driver through constant speed and
headway control. The function
performs headway control to maintain
the distance with a vehicle ahead at a
constant preset speed without you
having to depress the accelerator or
brake pedal.
Warnings and Cautionsfor Using the Mazda
Radar Cruise Control
(MRCC)
WARNING
Do not rely completely on the MRCC.
The MRCC may not be able to detect a
vehicle ahead depending on the type
of vehicle ahead and its conditions, the
weather conditions, and the road
conditions. Additionally, the system
might be unable to decelerate
sufficiently if the vehicle ahead applies
the brakes suddenly or another vehicle
cuts into your lane, which could result
in an accident.
Always check the surrounding
conditions and depress the brake
pedal or accelerator pedal while
keeping a safe distance from a vehicle
ahead or a vehicle following behind
you.
Do not use the MRCC under the
following conditions. Otherwise, it
may result in an accident.
The vehicle is driven on roads other
than highways.
 The vehicle is driven on roads with
sharp curves or with heavy traffic
where sufficient distances between
vehicles cannot be kept.
 The vehicle is driven on roads where
acceleration and deceleration are
frequently repeated.
 The vehicle is exiting the main lane
on an expressway to enter an
interchange, a rest area, or a parking
area.
Driving
Mazda Radar Cruise Control (MRCC)
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The vehicle is driven on slippery
roads such as icy roads,
snow-covered roads, and unpaved
roads.
 The vehicle is driven on a long
downslope.
 The vehicle is driven on a steep
slope.
 A two-wheeled vehicle such as a
motorcycle or bicycle is traveling
ahead.
Switch the MRCC off when it is not
being used.
Leaving the MRCC on when it is not in
use is dangerous as it could operate
unexpectedly, resulting in an accident.
Do not leave the vehicle while the
vehicle is stopped by the MRCC
control.
Getting out of the vehicle while the
stop hold control is operating is
dangerous as the vehicle may move
unexpectedly and result in an accident.
Before leaving the vehicle, switch the
MRCC off, shift the selector lever to
the P position, and apply the parking
brake.
CAUTION
 If the vehicle is towed or you are
towing something, switch the MRCC
off.
 Turn off the MRCC when the vehicle
is running on a chassis roller.
Driving
Mazda Radar Cruise Control (MRCC)
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How to Use the Mazda Radar Cruise Control (MRCC)
MRCC operation conditions
The MRCC can be set when all of the following conditions are met.
The brake pedal is not depressed.The vehicle speed is about 0 km/h (0 mph) to 145 km/h (90 mph).The Hill Descent Control is not operating.
Setting the MRCC
1. Press the MRCC switch to turn the system on.
When the system is on, the MRCC standby indication (white) is displayed on
the screen.
2. Accelerate to the desired speed.
3. Set the vehicle speed by pressing the RES switch up (SET+) or down (SET-).
Constant speed driving starts when the vehicle speed is set. In addition, the set
speed is displayed on the screen, and the MRCC standby indication (white)
changes to the MRCC set indication (green) .
If a vehicle ahead is detected while traveling at a constant speed, the system
switches to headway control. The vehicle ahead indication is displayed on the screen
while in headway control.
Driving
Mazda Radar Cruise Control (MRCC)
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Driving condition Instrument cluster display Active driving display indication
During travel at constant
speed
During travel under head-
way control
1. Set speed
2. Vehicle ahead indication
NOTE
While in EV mode, acceleration may be restricted and the vehicle may not be able
to be driven at the set speed.
Refer to Mazda intelligent Drive Select (Mi-Drive) on page 5-95.
If there is a structure on the road or an obstruction at a low height off the ground
in front of the vehicle, the system may recognize it as a vehicle ahead.
Acceleration and deceleration by accelerator pedal operation takes priority while
traveling at a constant speed or in headway control. When the accelerator pedal is
released, the vehicle returns to driving at a constant speed or headway control at
the set speed.
If a vehicle ahead is traveling at an extremely low speed, the system may not
detect it correctly.
While driving using the MRCC, intended engine braking is not applied even if the
selector lever is operated.
The brake lights turn on while the brakes are operating by the MRCC control.The MRCC is also turned off automatically when the vehicle power is switched
OFF.
Driving
Mazda Radar Cruise Control (MRCC)
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If the distance between vehicles control is disabled using Mazda Connect, the
system switches to the cruise control. At this time, the MRCC switch functions as
the cruise control switch.
Refer to the Settings section in the Mazda Connect Owner's Manual.
If the vehicle power is switched OFF while the distance between vehicles control is
disabled, the distance between vehicles control is enabled automatically the next
time the vehicle power is switched ON.
If the vehicle ahead stops during headway control, your vehicle in headway control
also stops. When the vehicle is stopped, the MRCC indicator light
in the
instrument cluster turns on.
When the vehicle ahead accelerates from a stop and one of the following operations
is performed, your vehicle starts driving.
Press the RES switch.Depress the accelerator pedal.
If you do not start driving the vehicle af ter the vehicle ahead has resumed driving,
the system urges the driver to resume driving.
NOTE
If the vehicle ahead resumes driving within 3 seconds after the vehicle was
stopped by the system, your vehicle also resumes driving automatically.
If the vehicle is stopped by the system continuously for 10 minutes or longer, the
parking brake is applied automatically. At this time, the MRCC is canceled.
Even if the MRCC is canceled while the vehicle is stopped, the vehicle is held in its
stopped position.
Refer to AUTOHOLD on page 5-63.
If the MRCC is canceled while the vehicle is stopped and there is no vehicle
ahead, you cannot resume driving the ve hicle using the RES switch. Depress the
accelerator pedal and start driving the vehicle.
Changing the set vehicle speed
Changing the set vehicle speed using the RES switch
Press the RES switch up (SET+) or down (SET-) to the desired speed.
Press and release immediately: 1 km/h (1 mph)Press and hold: 10 km/h (5 mph)
Changing the set vehicle speed using the accelerator pedal
Depress the accelerator pedal until the vehicle speed reaches the desired speed,
then press the RES switch up (SET+) or down (SET-).
Reading the set vehicle speed from the speed limit sign using the RES switch
Press the RES switch when the speed limit sign set indication
turns on.
Driving
Mazda Radar Cruise Control (MRCC)
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CAUTION
The function which recognizes speed limit signs has limitations. Always check the
set vehicle speed that was read.
 Set the speedometer display unit to the sa me unit as the speed limit sign. Differing
units will capture speeds not intended by the driver.
NOTE
The Speed Limit Assist operates only when the navigation system's SD card is
inserted.
The Speed Limit Assist uses the Tra ffi c Sign Recognition system (TSR).
Refer to Traffic Sign Recognition System (TSR) on page 5-150.
The Speed Limit Assist cannot read sp eeds of less than 30 km/h (19 mph).Set vehicle speeds read from speed limit signs can be adjusted.
Refer to the Settings section in the Mazda Connect Owner's Manual.
The Speed Limit Assist can be turned
off.
Refer to the Settings section in the Mazda Connect Owner's Manual.
Setting the distance-between-vehicles during headway control
1. Press the CANCEL switch up (longer distance) or down (shorter distance).
Driving
Mazda Radar Cruise Control (MRCC)
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MRCC is not operating (white)
Distance-between-vehicles guide-line
(at 80 km/h (50 mph) vehicle speed) Instrument cluster display
Active driving display indica-
tion
Long (about 50 m (164 ft))
Medium (about 40 m (131 ft))
Short (about 30 m (98 ft))
Extremely short (about 25 m (82
ft))
Driving
Mazda Radar Cruise Control (MRCC)
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