DYNAMIC RADAR CRUISE CONTROL SYSTEM FAIL-SAFE CHART

Tech Tips

If any of the following auto cancel conditions are detected while the dynamic radar cruise control system is controlling vehicle speed, the system clears the stored vehicle speed and cancels control of vehicle speed by the dynamic radar cruise control system.

Automatic Cancel Control

Constant Speed Control Mode:
Auto Cancel Condition	Warning				Fail-safe Deactivation Condition
Auto Cancel Condition	Multi-information Display	Master Warning Light	Cruise Control Indicator	Warning Buzzer	Fail-safe Deactivation Condition
Open or short in stop light switch circuit	Cruise Control Malfunction Visit Your Dealer	Illuminates	Does not illuminate	Sounds	Dynamic radar cruise control system is turned off and back on again using the cruise control main switch (ON/OFF button).
Problem with stop light switch input circuit Problem with cruise control main switch cancel circuit Malfunction in the electronically controlled brake system Communication stop between skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU	Cruise Control Malfunction Visit Your Dealer	Illuminates	Does not illuminate	Sounds	Power switch is turned off and back to on (IG) again.
If the following condition occurs, the hybrid vehicle control ECU cancels control of vehicle speed by the dynamic radar cruise control system (stored vehicle speed is maintained): Vehicle speed is less than approximately 40 km/h (25 mph) while driving with the dynamic radar cruise control system controlling vehicle speed	-	Does not illuminate	Illuminates	-	Cruise control main switch is pushed to +RES
Malfunction in SFI system	-	Illuminates	Does not illuminate	-	Dynamic radar cruise control system is turned off and back on again using the cruise control main switch (ON/OFF button).
Vehicle speed is less than stored vehicle speed by approximately 16 km/h (10 mph) or more	-	Does not illuminate	Illuminates	-	Cruise control main switch is pushed to -SET
Electronically controlled brake system operates while driving with dynamic radar cruise control system controlling vehicle speed TRC system operates for a certain period of time while driving with dynamic radar cruise control system controlling vehicle speed. TRC is turned off VSC is turned off Drive start control is performed Electric parking brake is applied	-	Does not illuminate	Illuminates	-	Cruise control main switch is pushed to +RES

Vehicle-to-vehicle Distance Control Mode:
Auto Cancel Condition	Warning				Fail-safe Deactivation Condition
Auto Cancel Condition	Multi-information Display	Master Warning Light	Cruise Control Indicator	Warning Buzzer	Fail-safe Deactivation Condition
Open or short in stop light switch circuit	Cruise Control Malfunction Visit Your Dealer	Illuminates	Does not illuminate	Sounds	Dynamic radar cruise control system is turned off and back on again using the cruise control main switch (ON/OFF button).
Malfunction in SFI system	-	Illuminates	Does not illuminate	-	Dynamic radar cruise control system is turned off and back on again using the cruise control main switch (ON/OFF button).
If either of the following conditions occurs, the hybrid vehicle control ECU cancels control of vehicle speed by the dynamic radar cruise control system (stored vehicle speed is maintained): Vehicle speed is less than approximately 40 km/h (25 mph) while driving with the dynamic radar cruise control system controlling vehicle speed A preceding vehicle is not detected when follow-up control is being performed at a vehicle speed of approximately 40 km/h (25 mph) or less	-	Does not illuminate	Illuminates	-	Cruise control main switch is pushed to +RES
Malfunction in the millimeter wave radar sensor assembly Beam axis of millimeter wave radar sensor assembly misaligned The electric parking brake system is malfunctioning Problem with stop light switch input circuit Problem with cruise control main switch cancel circuit	Cruise Control Malfunction Visit Your Dealer	Illuminates	Does not illuminate	Sounds	Power switch is turned off and back to on (IG) again.
If the following condition occurs, the hybrid vehicle control ECU cancels control of vehicle speed by the dynamic radar cruise control system (stored vehicle speed is maintained): Millimeter wave radar sensor assembly becomes dirty	Radar Cruise Control Unavailable Clean Sensor	Illuminates	Does not illuminate	Sounds	The condition returns to normal (the resume function can be operated after fail-safe is deactivated).
If any of the conditions listed below occurs, the hybrid vehicle control ECU cancels control of vehicle speed by the dynamic radar cruise control system (stored vehicle speed is maintained): Millimeter wave radar sensor assembly sensitivity reduced because of bad weather such as rain, fog, snow, or sandstorm Brake control by the dynamic radar cruise control system is temporarily unavailable The beam axis of the millimeter wave radar sensor assembly is being aligned The forward recognition camera is temporarily unavailable A system check is being performed after the engine has started	Radar Cruise Control Unavailable	Illuminates	Does not illuminate	Sounds	The conditions return to normal (the resume function can be operated after fail-safe is deactivated).
Electronically controlled brake system operates while driving with cruise control system controlling vehicle speed TRC system operates for a certain period of time while driving with cruise control system controlling vehicle speed. TRC is turned off VSC is turned off Drive start control is performed Electric parking brake is applied	-	Does not illuminate	Illuminates	-	Cruise control main switch is pushed to +RES
If any of the following conditions occur while the vehicle stopped, the hybrid vehicle control ECU cancels control of vehicle speed by the dynamic radar cruise control system: Open or short in stop light switch circuit Malfunction in the millimeter wave radar sensor assembly Beam axis of millimeter wave radar sensor assembly misaligned The electric parking brake system is malfunctioning Problem with stop light switch input circuit Problem with cruise control main switch cancel circuit Millimeter wave radar sensor assembly sensitivity reduced because of bad weather such as rain, fog, snow, or sandstorm Millimeter wave radar sensor assembly becomes dirty Brake control by the dynamic radar cruise control system is temporarily unavailable The beam axis of the millimeter wave radar sensor assembly is being aligned The forward recognition camera is temporarily unavailable A system check is being performed after the engine has started	Cruise Control Fault Press Brake to Deactivate Visit Your Dealer	Illuminates	Does not illuminate	3 beeps are heard	The conditions return to normal (the resume function can be operated after fail-safe is deactivated).
If any of the following conditions occur while the vehicle stopped, the hybrid vehicle control ECU cancels control of vehicle speed by the dynamic radar cruise control system: The driver seat belt is unfastened The driver door is opened The vehicle is parked for a long period of time The vehicle is driving on a steep hill A preceding vehicle is not detected	Radar Cruise Control Unavailable Depress Brake to Resume Driving	Does not illuminate	Illuminates	-	The conditions return to normal (the resume function can be operated after fail-safe is deactivated).