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	Warning Buzzer	Fail-safe Deactivation Condition
Open or short in stop light switch circuit	Check Cruise Control System	Illuminates	Sounds	Dynamic radar cruise control system is turned off and back on again using cruise control main switch (ON-OFF button).
Problem with stop light switch input circuit Problem with cruise control main switch cancel circuit Malfunction in electronically controlled brake system Communication stop between skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU	Check Cruise Control System	Illuminates	Sounds	Power switch is turned off and back 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	-	Cruise control main switch is pushed to +RES.
Malfunction in hybrid control system	-	Illuminates	-	Dynamic radar cruise control system is turned off and back on again using 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	-	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	-	Does not illuminate	-	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	Warning Buzzer	Fail-safe Deactivation Condition
Open or short in stop light switch circuit	Check Cruise Control System	Illuminates	Sounds	Dynamic radar cruise control system is turned off and back on again using cruise control main switch (ON-OFF button).
Malfunction in hybrid control system	-	Illuminates	-	Dynamic radar cruise control system is turned off and back on again using 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	-	Does not illuminate	Sounds twice	Cruise control main switch is pushed to +RES.
Malfunction in millimeter wave radar sensor assembly Beam axis of millimeter wave radar sensor assembly misaligned Problem with stop light switch input circuit Problem with cruise control main switch cancel circuit	Check Cruise Control System	Illuminates	Sounds	Power switch is turned off and back 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	Clean Radar Sensor	Illuminates	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	Cruise Control Not Available	Illuminates	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	-	Does not illuminate	-	Cruise control main switch is pushed to +RES.