PRE-CRASH SAFETY SYSTEM PROBLEM SYMPTOMS TABLE

Note:

When replacing the combination meter assembly, make sure to replace it with a new one.
When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly 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. 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.
Click here

Tip:

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.

Table 1. Pre-crash safety System
Symptom	Suspected Area	Link
"Pre-crash safety Malfunction Visit Your Dealer" is displayed	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
	Combination meter assembly	Click here
"Pre-crash safety Unavailable" is displayed	Check installation condition of millimeter wave radar sensor assembly	Click here
	Perform millimeter wave radar sensor assembly adjustment	Click here
	Millimeter wave radar sensor assembly temperature malfunction	Click here
	Millimeter wave radar sensor assembly low voltage malfunction	Click here
	Millimeter wave radar sensor assembly	Click here
	Combination meter assembly	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
"Pre-crash safety Unavailable Clean Sensor" is displayed	Foreign matter attached to millimeter wave radar sensor assembly	-
	Millimeter wave radar sensor assembly	Click here
	Combination meter assembly	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
"Front Camera System Unavailable Clean Windshield" is displayed	Foreign matter attached to forward recognition camera or area of windshield in front of forward recognition camera	-
	Forward recognition camera	Click here
	Combination meter assembly	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
"Front Camera System Unavailable" is displayed	Proceed to "Forward Recognition Camera System"	Click here
	Millimeter wave radar sensor assembly temperature malfunction	Click here
	Millimeter wave radar sensor assembly low voltage malfunction	Click here
	Forward recognition camera	Click here
	Combination meter assembly	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
Although there is possibility of collision, pre-crash controls (all front crash controls) do not operate ("Pre-crash safety Unavailable" is not displayed)	Check if pre-crash safety system is canceled	Click here
	Vehicle condition/environment does not match the pre-crash safety system operation conditions (Confirm control operation conditions).	Click here
	Check installation condition of millimeter wave radar sensor assembly	Click here
	Perform millimeter wave radar sensor assembly adjustment	Click here
	Check installation condition of forward recognition camera	Click here
	Perform forward recognition camera adjustment	Click here
	Millimeter wave radar sensor assembly	Click here
	Forward recognition camera	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
Although there is no possibility of collision, pre-crash controls (all front crash controls) operate	Vehicle condition/environment match pre-crash control operation conditions (Confirm control operation conditions)	Click here
	Check installation condition of millimeter wave radar sensor assembly	Click here
	Perform millimeter wave radar sensor assembly adjustment	Click here
	Check installation condition of forward recognition camera	Click here
	Perform forward recognition camera adjustment	Click here
	Millimeter wave radar sensor assembly	Click here
	Forward recognition camera	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
Pre-crash safety system does not operate	Check if pre-crash system is canceled	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here
Pre-crash safety system cannot be canceled (PCS warning light does not illuminate)	Combination meter assembly (check if indicator illuminates using Active Test)	Click here
	Combination meter assembly	Click here
	Driving support ECU assembly (for LHD)	Click here
	Driving support ECU assembly (for RHD)	Click here