Precaution [10/2014 - 09/2017]

Keep in mind the following points when inspecting the dynamic radar cruise control system.

• As there is a limitation on the vehicle-to-vehicle distance controlling capability, do not overly rely on the dynamic radar cruise control system.
• Do not neglect to pay constant attention to the vehicle-to-vehicle distance and the traffic conditions when using the dynamic radar cruise control system. Decelerate with the brake pedal, or accelerate with the accelerator pedal, according to the situation, to keep an appropriate distance with the preceding vehicle.
• When the preceding vehicle decelerates rapidly or another vehicle moves in front of the vehicle, decelerating in time to avoid a collision may not be possible without additional braking.
• The dynamic radar cruise control system is designed to assist in maintaining an appropriate distance with the preceding vehicle. However, the system alone is not sufficient. It is imperative that the driver pays attention at all times.
• The millimeter wave radar sensor assembly can automatically detect dirt on the sensor face and inform the driver, but dirt may not always be detected. Keep the sensor face clean.
• The dynamic radar cruise control system does not work, or give vehicle-approaching warning, for vehicles which are stopped or driving at significantly slower speeds. Always pay attention to other vehicles.
• The millimeter wave radar sensor assembly detection area is narrow at close range, so detection of a vehicle moving just in front may be delayed, or a motorcycle travelling near the side of the same lane may not be detected. The distance to the preceding vehicle may not be maintained properly due to these reasons.
• While driving with vehicle-to-vehicle distance control mode controlling vehicle speed (follow-up cruising), if + (ACCEL) is operated to increase the set vehicle speed when there is a preceding vehicle, even though the switch is operated, the vehicle will not accelerate because the speed is being controlled in accordance with the speed of the preceding vehicle. However, as the set vehicle speed has been increased by + (ACCEL) operation, the vehicle will accelerate to the set speed when there is no preceding vehicle. Check the set speed with the cruise control SET indicator light on the multi-information display in the combination meter assembly.
• The controlled vehicle distance may be shorter than the set vehicle distance when cruising on a long downhill road.
• The dynamic radar cruise control system must be turned off and then back on again using the cruise control main switch if all of the following occur: 1) the cruise control indicator light (vehicle-to-vehicle distance control mode) goes off, 2) a "pong" sound is heard, and 3) a message is shown on the multi-information display in the combination meter assembly.
• The vehicle approach warning buzzer provided for the dynamic radar cruise control system does not sound in constant speed control mode because the presence of a preceding vehicle and the distance to it are not judged as they are in vehicle-to-vehicle distance control mode. Pay attention to the distance with the preceding vehicle.
• The dynamic radar cruise control system has 2 cruise control modes: constant speed control mode and vehicle-to-vehicle distance control mode. Confirm which mode is selected when using the dynamic radar cruise control system.
• For additional precautions related to constant speed control mode, refer to Precautions for conventional cruise control system.

  Refer to PRECAUTION [10/2014 - 09/2017]

When replacing the driving support ECU assembly, make sure to replace it with a new one. If a device which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle, and as a result, a DTC may be stored.

When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

If the ECM is replaced, initialization must be performed.

After the brake actuator assembly (skid control ECU) is replaced, perform the yaw rate sensor and G sensor zero point calibration and store the system information.