PARKING SUPPORT BRAKE SYSTEM PROBLEM SYMPTOMS TABLE

Note

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

Tech Tips

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

General
Symptom	Suspected Area	Link
System does not operate at all	Parkung support alert system	Click here
	CAN communication system	Click here
	Clearance warning ECU assembly	Click here
	Blind spot monitor system*2	Click here
	Panoramic view monitor system*3	Click here

Sonar Function
Symptom	Suspected Area	Link
Detection function operates when the operating conditions are not met	Hybrid control system	Click here
	Skid control ECU assembly*4	Click here
	Skid control ECU assembly*5	Click here
	Clearance warning ECU assembly	Click here
Detection function operates when vehicle is not within the required speed range (speedometer not malfunctioning)	CAN communication system	Click here
	Clearance warning ECU assembly	Click here

Buzzer Function
Symptom	Suspected Area	Link
Parking support brake system is normal but buzzer operation is intermittent	Check that the temporary mute function is not operating	-
	Proceed to "No.1 Clearance Warning Buzzer Circuit"	Click here
	Proceed to "No.2 Clearance Warning Buzzer Circuit"	Click here
	Proceed to "Buzzer does not Sound"	Click here
	Clearance warning ECU assembly	Click here
	Combination meter assembly	Click here

Display Function
Symptom	Suspected Area	Link
While the parking support brake system is operating, no parking support brake notifications are displayed on the multi-information display.	CAN communication system	Click here
	Clearance warning ECU assembly	Click here
	Combination meter assembly	Click here
While the parking support brake system is operating, no parking support brake notifications are displayed on the headup display.*1	CAN communication system	Click here
	Clearance warning ECU assembly	Click here
	Meter mirror Sub-assembly	Click here
"Parking Support Brake Malfunction Visit Your Dealer" is displayed	Combination meter assembly	Click here
	Clearance warning ECU assembly	Click here
"Parking Support Brake Unavailable" is displayed	Check that no foreign matter is attached to the ultrasonic sensors.	-
	Steering angle neutral point (Parking support brake system registration)	Click here
	CAN communication system	Click here
	Combination meter assembly	Click here
	Clearance warning ECU assembly	Click here
parking support brake system does not operate when there is a possibility of a collision (Warning message "Parking Support Brake Unavailable" not displayed)	Check the installation of the ultrasonic sensors (front)	Click here
	Check the installation of the ultrasonic sensors (rear)	Click here
	Adjust the installation of the ultrasonic sensors as necessary.	Click here
	Ultrasonic sensors (front)	Click here
	Ultrasonic sensors (rear)	Click here
	Clearance warning ECU assembly	Click here
parking support brake system control operates when there is no possibility of a collision	Check the installation of the ultrasonic sensors (front)	Click here
	Check the installation of the ultrasonic sensors (rear)	Click here
	Adjust the installation of the ultrasonic sensors as necessary.	Click here
	Ultrasonic sensors (front)	Click here
	Ultrasonic sensors (rear)	Click here
	Clearance warning ECU assembly	Click here
parking support brake system control cannot be turned off (PKSB OFF indicator does not illuminate)	Combination meter assembly (LED): Perform Active Test (Indicat. ICS OFF LCD)	Click here
	Steering pad switch assembly	Click here
	Clearance warning ECU assembly	Click here
PKSB OFF indicator blinks	If "Yes" is displayed for the Data List item "BSM Radar Communication Invalid History", the blind spot monitor system may be malfunctioning.*2	Click here
	Check that no foreign matter is attached to the ultrasonic sensors.	-
	Steering angle neutral point (Parking support brake system registration)	Click here

*1: w/ Headup Display System
*2: w/ Blind Spot Monitor System
*3: w/ Blind Spot Monitor System and w/ Panoramic View Monitor System
*4: for LHD
*5: for RHD