Setting the System

Operation conditions

Headway control function

The TJA operates when all of the following conditions are met.

  • Vehicle speed is 0 km/h (0 mph) to 145 km/h (90 mph)

  • The headway control function of the Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) is set to operable (if it was set to inoperable, set it to operable using the personalization function).

  • The selector lever is in the D or M position (manual mode).

  • The TJA is operating.

  • The brake pedal is not depressed.

  • The parking brake is released (Electric Parking Brake (EPB) indicator light is turned off).

  • There is no problem with the DSC.

  • All the doors are closed.

  • The driver's seat belt is fastened.

 

 

  • Under the following conditions, the TJA cannot be used when the vehicle speed is 30 km/h (19 mph) or slower.

    • The Forward Sensing Camera (FSC) cannot detect target objects (There is problem with the Forward Sensing Camera (FSC) or windshield is dirty).

    • There is a problem with the stop hold control function.

    • There is a problem with the Electric Parking Brake (EPB).

  • The TJA may not launch directly after the engine starts.

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Steering assist function

The steering assist function operates when all of the following conditions are met.

  • Your vehicle is moving and less than about 56 km/h (35 mph).

  • White (yellow) lane lines on both sides are detected and you are driving near the center of the lane, or your vehicle detects a vehicle ahead.

  • The steering wheel is not turned sharply.

  • The turn signal lever is not operated.

  • The headway control function is operating.

  • The Off-Road Traction Assist is not operating.

  • When Off-road mode is not selected using Mazda intelligent Drive Select (Mi-Drive).

 

  • The steering assist function operates so that the vehicle remains near the center of the driving lane, however, depending on conditions such as the road curvature, road slope and undulations, and vehicle speed, the function might not be able to keep the vehicle near the center of the driving lane.

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Setting method

  1. Press the TJA switch.

    The TJA standby indication (white) turns on. In addition, the TJA display indication is displayed on the multi-information display at the same time.

  2. Adjust the vehicle speed to the desired setting using the accelerator pedal and press the SET+ switch or SET- switch to start headway control.

    The set speed is indicated on the display. At the same time, the TJA standby indication (white) changes to the TJA set indication (green).

  3. The headway control is operable when all of the conditions for it to operate are met, or the steering assist function is operable when all of the conditions for it to operate are met.

 

  • If a vehicle ahead is detected while traveling at a constant speed, the vehicle-ahead indication is displayed and headway control is performed. Additionally, when a vehicle ahead is no longer detected, the vehicle-ahead indication turns off and the system switches back to travel at constant speed.

  • The lowest possible speed which can be set on the TJA is 30 km/h (19 mph).

  • Headway control is not possible if the vehicle ahead is driving faster than your vehicle's set speed. Adjust the system to the desired vehicle speed using the accelerator pedal.

  • When the ignition is switched OFF, the system status before it was turned off is maintained. For example, if the ignition is switched OFF with the TJA operable, the TJA remains operational the next time the ignition is switched ON.

  • When the TJA switch is pressed while the Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) system is operating, the TJA operates. In addition, when the MRCC switch is pressed while the TJA is operating, the Mazda Radar Cruise Control with Stop & Go function (MRCC with Stop & Go function) system operates.

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Changing the set vehicle speed

To accelerate/decelerate using the SET switch

When you press the SET+ switch, the vehicle accelerates and when you press the SET- switch, it decelerates.

Short press

1 km/h (1 mph)

Long press

10 km/h (5 mph)

 

For example, the set vehicle speed is changed by pressing the SET switch four times as follows:

The vehicle speed accelerates or decelerates by 4 km/h (4 mph).

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To increase speed using accelerator pedal

Depress the accelerator pedal and press and release the SET+ switch or SET- switch at the desired speed. If the switch is not operated, the system returns to the set speed after you release your foot from the accelerator pedal.

 

The warnings and brake control do not operate while the accelerator pedal is depressed.

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  • When accelerating using the SET+ switch while in headway control, the set vehicle speed can be adjusted but acceleration is not possible. If there is no longer a vehicle ahead, acceleration continues until reaching the set vehicle speed. For the set vehicle speed, check the set vehicle speed indication in the display.

  • When depressing the accelerator pedal, the inter-vehicle distance indication in the display changes to the white-line indication.

  • The setting speed can be changed by operating the SET+ switch or SET- switch during stop hold control.

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Changing the distance between vehicles during headway control

The distance-between-vehicles can be set to 4 levels; Long, medium, short, and extremely short distance.

The distance-between-vehicles is set to a shorter distance by pressing the switch. The distance-between-vehicles is set to a longer distance by pressing the switch.

Distance-between-vehicles guideline

(at 80 km/h (50 mph) vehicle speed)

Indication on multi-information display

Indication on active driving display*1

Type A

Type B

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))

  1. Displays a pop-up image in the active driving display only when the driver operates the switch.

 

  • The distance-between-vehicles differs depending on the vehicle speed, and the slower the vehicle speed, the shorter the distance.

  • When the ignition is switched to ACC or OFF and then the engine is started again, the system automatically sets the distance-between-vehicles to the previous setting.

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The function is temporarily canceled

Headway control function

When the following operations are performed, the headway control function is temporarily canceled and the TJA set indication (green) changes to the TJA standby indication (white) at the same time.

  • The CANCEL switch is pressed.

  • The brake pedal is depressed.

  • The parking brake is applied.

  • The selector lever is in the P, N, or R position.

Under the following conditions, the TJA cancel indication is displayed in the multi-information display and a single beep sound is heard.

  • The DSC has operated.

  • The Smart Brake Support (SBS) has operated.

  • The Smart City Brake Support [Forward] (SCBS F) or Advanced Smart City Brake Support (Advanced SCBS) has operated.

  • When traveling on a downslope for a long period of time.

  • There is a problem with the system.

  • The engine has stalled.

  • Any of the doors is opened.

  • The driver's seat belt is unfastened.

  • The radar sensor (front) cannot detect target objects (during rain, fog, snow or other inclement weather conditions, or when the radiator grille is dirty).

  • The parking brake is automatically applied during stop hold control.

Steering assist function

If any of the following conditions occurs, the steering assist function is temporarily canceled.

  • The headway control function is canceled.

  • White (yellow) lane lines cannot be detected or a vehicle ahead cannot be recognized.

  • Your vehicle speed is more than about 64 km/h (40 mph).

  • The accelerator pedal is operated.

  • The turn signal lever is operated.

  • The Off-Road Traction Assist has operated.

  • When Off-road mode is selected using Mazda intelligent Drive Select (Mi-Drive).

  • The vehicle is being driven on a sharp curve.

  • The width of a lane is excessively narrow or wide.

  • The vehicle crosses a lane line.

  • The driver takes his/her hands off the steering wheel.

  • The steering wheel is operated abruptly.

  • There is a problem with the system.

  • The temperature in the Forward Sensing Camera (FSC) is too high or too low.

  • The windshield around the Forward Sensing Camera (FSC) is foggy.

  • The windshield around the Forward Sensing Camera (FSC) is blocked by an obstruction, causing poor forward visibility.

 

 

  • If you take your hands off the steering wheel, a warning is indicated on the multi-information display and the active driving display. Then, if you continue to leave your hands off the steering wheel, a warning is indicated on the multi-information display and the active driving display and a warning sound is activated.

  • If the steering wheel is held lightly, or depending on the road conditions, the system determines that you have released the steering wheel (not holding the steering wheel) even if you are holding it, and an alert is indicated on the multi-information display and the active driving display.

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To resume operation

If the TJA is temporarily canceled, it will resume operation at the previously set speed by pressing the RES switch after all of the operation conditions have been met.

 

  • If the set speed is not indicated on the display, the system does not operate even if the RES switch is pressed.

  • After the operation, the steering assist operation may not operate for a period of 5 seconds at the most until the lane lines are detected or a vehicle ahead is recognized.

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Turning off

When the TJA switch is pressed while the TJA is operating, the TJA turns off.

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