METER / GAUGE SYSTEM > PROBLEM SYMPTOMS TABLE

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Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptom 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.

Meter or Gauge
Symptom	Suspected Area	See page
Speedometer malfunction	Speedometer circuit	Click here
Tachometer malfunction	Tachometer circuit	Click here
Fuel receiver gauge malfunction	Fuel receiver gauge circuit	Click here
ODO, TRIP A, TRIP B meter malfunction	Combination meter assembly	Click here
HV system indicator malfunction	Hybrid system indicator circuit	Click here
Operating light control rheostat does not change light brightness	Light control rheostat circuit	Click here
Meter illumination is always dark.	Illumination circuit	Click here
Meter illumination does not dim at night.	Illumination circuit	Click here

Warning or Indicator
Symptom	Suspected Area	See page
Master warning light malfunction	Combination meter assembly (LED)	Click here
Master warning light malfunction	Combination meter assembly	Click here
Open door warning light malfunction	Combination meter assembly (LED)	Click here
	Door courtesy light switch	Click here
	Main body ECU (Multiplex network body ECU)	-
	Wire harness or connector	-
	Combination meter assembly	Click here
Brake warning light does not come on.	Combination meter assembly (LED)	Click here
	Brake warning light circuit	Click here
	Combination meter assembly	Click here
Brake warning light does not go off.	Combination meter assembly (LED)	Click here
	Brake warning light circuit	Click here
	Combination meter assembly	Click here
Seat belt warning light malfunction	Combination meter assembly (LED)	Click here
	Driver side seat belt warning light circuit	Click here
	Front passenger side seat belt warning light circuit	Click here
	Combination meter assembly	Click here
SRS warning light does not come on.	Combination meter assembly (LED)	Click here
	SRS warning light circuit	Click here
	Combination meter assembly	Click here
SRS warning light does not go off.	Combination meter assembly (LED)	Click here
	SRS warning light circuit	Click here
	Combination meter assembly	Click here
Water temperature warning light malfunction	Combination meter assembly (LED)	Click here
	Cooling system	Click here
	Engine coolant temperature sensor	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Oil pressure warning light malfunction	Combination meter assembly (LED)	Click here
	Oil Pressure Switch	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Charge warning light malfunction	Combination meter assembly (LED)	Click here
	Generator	Click here
	Power management control ECU	-
	Combination meter assembly	Click here
EPS warning light malfunction	Combination meter assembly (LED)	Click here
	EPS warning light circuit	Click here
	Combination meter assembly	Click here
MIL (Check engine warning light) malfunction	Combination meter assembly (LED)	Click here
	MIL circuit	Click here
	Combination meter assembly	Click here
PCS warning light malfunction (w/ Pre-crash Safety System)	Combination meter assembly (LED)	Click here
	Pre-crash safety system	Click here
	Combination meter assembly	Click here
Slip indicator light does not come on.	Combination meter assembly (LED)	Click here
	Slip indicator light circuit	Click here
	Combination meter assembly	Click here
Slip indicator light does not go off.	Combination meter assembly (LED)	Click here
	Slip indicator light circuit	Click here
	Combination meter assembly	Click here
ABS warning light does not come on.	Combination meter assembly (LED)	Click here
	ABS warning light circuit	Click here
	Combination meter assembly	Click here
ABS warning light does not go off.	Combination meter assembly (LED)	Click here
	ABS warning light circuit	Click here
	Combination meter assembly	Click here
Electrically controlled brake warning light does not come on.	Combination meter assembly (LED)	Click here
	Brake control warning light circuit	Click here
	Combination meter assembly	Click here
Electrically controlled brake warning light does not go off.	Combination meter assembly (LED)	Click here
	Brake control warning light circuit	Click here
	Combination meter assembly	Click here
Fuel level warning light malfunction	Combination meter assembly (LED)	Click here
	Fuel sender gauge assembly	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Rear fog indicator light malfunction	Combination meter assembly (LED)	Click here
	Lighting system	Click here
	Combination meter assembly	Click here
Headlight leveling indicator light malfunction (w/ Automatic Type Headlight Beam Level Control)	Combination meter assembly (LED)	Click here
	Headlight leveling ECU assembly	-
	Wire harness or connector	-
	Combination meter assembly	Click here
High beam indicator light malfunction	Combination meter assembly (LED)	Click here
	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Ready indicator light malfunction	Combination meter assembly (LED)	Click here
	Power management control ECU	-
	Combination meter assembly	Click here
Tail indicator light malfunction	Combination meter assembly (LED)	Click here
	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Front fog indicator light malfunction	Combination meter assembly (LED)	Click here
	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Turn indicator light malfunction	Turn signal flasher assembly	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Eco mode indicator light malfunction	Combination meter assembly (LED)	Click here
	Combination switch assembly	Click here
	Power management control ECU	-
	Combination meter assembly	Click here
Sport mode indicator light malfunction	Combination meter assembly (LED)	Click here
	Combination switch assembly	Click here
	Power management control ECU	-
	Combination meter assembly	Click here
EV indicator light malfunction	Combination meter assembly (LED)	Click here
	Combination switch assembly	Click here
	Power management control ECU	-
	Combination meter assembly	Click here
Cruise main (Constant speed control mode) indicator light malfunction	Combination meter assembly (LED)	Click here
	Cruise control system	Click here
	Combination meter assembly	Click here
Cruise main (Vehicle-to-vehicle distance control mode) indicator light malfunction (w/ Dynamic Radar Cruise Control System)	Combination meter assembly (LED)	Click here
	Dynamic radar cruise control system	Click here
	Combination meter assembly	Click here
Clearance sonar indicator light malfunction (w/ Lexus Parking Assist-sensor System)	Combination meter assembly (LED)	Click here
	Lexus parking assist-sensor system	Click here
	Combination meter assembly	Click here
EV mode indicator light malfunction	Combination meter assembly (LED)	Click here
	Combination switch assembly	Click here
	Power management control ECU	-
	Combination meter assembly	Click here
Shift selection indicator light malfunction	Combination meter assembly (LED)	Click here
	Power management control ECU	-
	Combination meter assembly	Click here

Cruise Information Display
Symptom	Suspected Area	See page
Operating DISP switch (steering pad switch assembly) does not change cruise information display.	DISP switch (Steering pad switch assembly)	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Energy flow display malfunction	Hybrid control system	Click here
Energy flow display malfunction	Combination meter assembly	Click here
Current fuel consumption display malfunction	ECM	-
	Skid control ECU assembly	-
	Combination meter assembly	Click here
Average fuel consumption display malfunction	ECM	-
	Skid control ECU assembly	-
	Combination meter assembly	Click here
Average fuel consumption after refueling display malfunction	ECM	-
	Skid control ECU assembly	-
	Combination meter assembly	Click here
Driving distance display malfunction	ECM	-
	Fuel sender gauge assembly	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Driving time display malfunction	Combination meter assembly	Click here
Average speed display malfunction	Skid control ECU assembly	-
Average speed display malfunction	Combination meter assembly	Click here
Outside temperature display malfunction	Air conditioning amplifier assembly	Click here
Outside temperature display malfunction	Combination meter assembly	Click here
Rear seat belt warning display malfunction (w/ Rear Seat Belt Warning)	Rear seat inner belt assembly RH	Click here
	Rear seat inner with center belt assembly LH (for Center)	Click here
	Rear seat inner with center belt assembly LH (for LH)	Click here
	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Customized parameters cannot be changed (Customized parameters can be changed by using the intelligent tester).	Combination meter assembly	Click here

Multi-information Display
Symptom	Suspected Area	See page
Multi-information display does not light up (Combination meter assembly operates normally).	Combination meter assembly (Multi-information display)	Click here
	Combination meter assembly	Click here
Operating DISP switch (steering pad switch assembly) does not change multi-information display.	DISP switch (Steering pad switch assembly)	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Maintenance mode display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Certification mode display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Adjusting front radar beam display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System)	Dynamic radar cruise control system	-
	Combination meter assembly	Click here
Checking cruise control C/D display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System)	Dynamic radar cruise control system	Click here
	Combination meter assembly	Click here
Checking cruise control brake display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System)	Dynamic radar cruise control system	Click here
	Combination meter assembly	Click here
Brake! display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System)	Seat belt control ECU	-
	Combination meter assembly	Click here
Open door warning is displayed, not displayed, or not displayed correctly.	Door courtesy light switch	Click here
	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Clearance sonar display is displayed, not displayed, or not displayed correctly. (w/ Lexus Parking Assist-sensor System)	Lexus parking assist-sensor system	Click here
	Combination meter assembly	Click here
Check sonar display is displayed, not displayed, or not displayed correctly. (w/ Lexus Parking Assist-sensor System)	Lexus parking assist-sensor system	Click here
	Combination meter assembly	Click here
Clean sonar display is displayed, not displayed, or not displayed correctly (w/ Lexus Parking Assist-sensor System).	Lexus parking assist-sensor system	Click here
	Combination meter assembly	Click here
Auto power off to conserve battery display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Shift to P position display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Rear seat belt reminder display is displayed, not displayed, or not displayed correctly. (w/ Rear Seat Belt Warning)	Rear seat inner belt assembly RH	Click here
	Rear seat inner with center belt assembly LH (for Center)	Click here
	Rear seat inner with center belt assembly LH (for LH)	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
Shift to P position when parked display is displayed, not displayed, or not displayed correctly.	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Shift to P position and push power switch to turn power off display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
N position display is displayed, not displayed, or not displayed correctly.	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Traction battery preservation mode restart after shifting the N position display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Low traction battery charge when not in N position display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
P lock malfunction when parking, park in flat place and apply parking brake securely display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Check hybrid system display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Release parking brake display is displayed, not displayed, or not displayed correctly.	Parking brake switch assembly (for LHD)	Click here
	Parking brake switch assembly (for RHD)	Click here
	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Key not detected display is displayed, not displayed, or not displayed correctly.	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Speed limit exceeded display is displayed, not displayed, or not displayed correctly. (for G.C.C. Countries).	Skid control ECU assembly	-
	Combination meter assembly	Click here
Clean radar sensor display is displayed, not displayed, or not displayed correctly (w/ Pre-crash Safety System).	Pre-crash safety system	Click here
	Combination meter assembly	Click here
Cruise control not available display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System)	Dynamic radar cruise control system	Click here
	Combination meter assembly	Click here
Check cruise control system display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System)	Dynamic radar cruise control system	Click here
	Combination meter assembly	Click here
Check PCS system display is displayed, not displayed, or not displayed correctly. (w/ Pre-crash Safety System)	Seat belt control ECU	-
	Combination meter assembly	Click here
Check headlight system display is displayed, not displayed, or not displayed correctly.	Lighting system	Click here
	Combination meter assembly	Click here
Turn power off display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Key detected in vehicle display is displayed, not displayed, or not displayed correctly.	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Turn lights off display is displayed, not displayed, or not displayed correctly. (w/ Light Reminder)	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Moon roof opened display is displayed, not displayed, or not displayed correctly. (w/ Sliding Roof)	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Depress brake pedal, touch power switch with key display is displayed, not displayed, or not displayed correctly.	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Depress brake and push power switch to start display is displayed, not displayed, or not displayed correctly.	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Shift to P position to start display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Key battery low display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Hybrid system overheat display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Low washer fluid display is displayed, not displayed, or not displayed correctly.	Washer fluid level warning switch	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
PCS temporarily not available display is displayed, not displayed, or not displayed correctly. (w/ Pre-crash Safety System)	Pre-crash safety system	Click here
	Combination meter assembly	Click here
EV mode currently not available display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode currently not available warming up display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode currently not available low battery display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode currently not available excessive speed display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode currently not available excessive acceleration display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode deactivated display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode deactivated low battery display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode deactivated excessive speed display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
EV mode deactivated excessive acceleration display is displayed, not displayed, or not displayed correctly.	Power management control ECU	-
	Combination meter assembly	Click here
Theft sensor off display is displayed, not displayed, or not displayed correctly. (w/ Intrusion Sensor)	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here
Theft sensor on display is displayed, not displayed, or not displayed correctly. (w/ Intrusion Sensor)	Main body ECU (Multiplex network body ECU)	-
	Combination meter assembly	Click here

Buzzer
Symptom	Suspected Area	See page
Multi-information display warning buzzer malfunction	Power management control ECU	-
Multi-information display warning buzzer malfunction	Combination meter assembly	Click here
Ready buzzer malfunction	Power management control ECU	-
Ready buzzer malfunction	Combination meter assembly	Click here
Seat belt warning buzzer malfunction	Driver side seat belt warning light circuit	Click here
	Front passenger side seat belt warning light circuit	Click here
	Main body ECU (Multiplex network body ECU)	-
	Rear seat inner belt assembly RH (w/ Rear Seat Belt Warning)	Click here
	Rear seat inner with center belt assembly LH (for Center) (w/ Rear Seat Belt Warning)	Click here
	Rear seat inner with center belt assembly LH (for LH) (w/ Rear Seat Belt Warning)	Click here
	Wire harness or connector	-
	Combination meter assembly	Click here
EPS warning buzzer malfunction	Power steering system	Click here
EPS warning buzzer malfunction	Combination meter assembly	Click here
Entry and start system warning buzzer malfunction (Intermittent)	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Immobiliser key identification completion buzzer malfunction	Certification ECU (Smart key ECU assembly)	-
	Combination meter assembly	Click here
Master warning buzzer malfunction	Related ECUs	-
Dynamic radar cruise control low speed cancel buzzer malfunction (w/ Dynamic Radar Cruise Control System)	Dynamic radar cruise control system	Click here
	Combination meter assembly	Click here
Entry and start system warning buzzer malfunction (Single)	Certification ECU (Smart key ECU assembly)	-
Entry and start system warning buzzer malfunction (Single)	Combination meter assembly	Click here
Brake control system warning buzzer malfunction	Skid control ECU assembly	-
Brake control system warning buzzer malfunction	Combination meter assembly	Click here
Smart key warning buzzer malfunction (Continual)	Certification ECU (Smart key ECU assembly)	-
Smart key warning buzzer malfunction (Continual)	Combination meter assembly	Click here
Shift selection P request buzzer malfunction	Power management control ECU	-
Shift selection P request buzzer malfunction	Combination meter assembly	Click here
HV battery charge request buzzer malfunction	Power management control ECU	-
HV battery charge request buzzer malfunction	Combination meter assembly	Click here
Speed limit exceeded warning buzzer malfunction (for G.C.C. Countries)	Skid control ECU assembly	-
	Combination meter assembly	Click here
Driving with parking brake unreleased warning buzzer malfunction	Main body ECU (Multiplex network body ECU)	-
	Skid control ECU assembly	-
	Combination meter assembly	Click here
Driving with any door opened warning buzzer malfunction	Main body ECU (Multiplex network body ECU)	-
	Skid control ECU assembly	-
	Combination meter assembly	Click here
Sports shift reject buzzer malfunction	Power management control ECU	-
Sports shift reject buzzer malfunction	Combination meter assembly	Click here
Shift operation reject buzzer malfunction	Power management control ECU	-
Shift operation reject buzzer malfunction	Combination meter assembly	Click here
EV reject buzzer malfunction	Power management control ECU	-
EV reject buzzer malfunction	Combination meter assembly	Click here
Light reminder buzzer malfunction (w/ Light Reminder)	Main body ECU (Multiplex network body ECU)	-
Light reminder buzzer malfunction (w/ Light Reminder)	Combination meter assembly	Click here
Sliding roof warning buzzer malfunction (w/ Sliding Roof)	Main body ECU (Multiplex network body ECU)	-
Sliding roof warning buzzer malfunction (w/ Sliding Roof)	Combination meter assembly	Click here
Depress the accelerator pedal with shift selection N buzzer malfunction	Power management control ECU	-
	Combination meter assembly	Click here

Others
Symptom	Suspected Area	See page
Other systems that uses the speed signal do not operate normally.	Speed signal circuit	Click here
Eco light (blue) or sport light (red) malfunction	Combination meter assembly	Click here