METER / GAUGE SYSTEM PROBLEM SYMPTOMS TABLE


Meter or Gauge
Symptom Suspected Area See page
Speedometer malfunction Speedometer circuit

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Tachometer malfunction Tachometer circuit

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Fuel receiver gauge malfunction Fuel receiver gauge circuit

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ODO, TRIP A, TRIP B meter malfunction Combination meter assembly

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HV system indicator malfunction Hybrid system indicator circuit

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Operating light control rheostat does not change light brightness Light control rheostat circuit

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Meter illumination is always dark. Illumination circuit

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Meter illumination does not dim at night. Illumination circuit

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Warning or Indicator
Symptom Suspected Area See page
Master warning light malfunction Combination meter assembly (LED)

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Combination meter assembly

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Open door warning light malfunction Combination meter assembly (LED)

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Door courtesy light switch

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Main body ECU (Multiplex network body ECU) -
Wire harness or connector -
Combination meter assembly

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Brake warning light does not come on. Combination meter assembly (LED)

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Brake warning light circuit

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Combination meter assembly

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Brake warning light does not go off. Combination meter assembly (LED)

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Brake warning light circuit

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Combination meter assembly

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Seat belt warning light malfunction Combination meter assembly (LED)

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Driver side seat belt warning light circuit

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Front passenger side seat belt warning light circuit

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Combination meter assembly

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SRS warning light does not come on. Combination meter assembly (LED)

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SRS warning light circuit

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Combination meter assembly

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SRS warning light does not go off. Combination meter assembly (LED)

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SRS warning light circuit

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Combination meter assembly

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Water temperature warning light malfunction Combination meter assembly (LED)

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Cooling system

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Engine coolant temperature sensor

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Wire harness or connector -
Combination meter assembly

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Oil pressure warning light malfunction Combination meter assembly (LED)

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Oil Pressure Switch

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Wire harness or connector -
Combination meter assembly

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Charge warning light malfunction Combination meter assembly (LED)

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Power management control ECU -
Combination meter assembly

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EPS warning light malfunction Combination meter assembly (LED)

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EPS warning light circuit

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Combination meter assembly

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MIL (Check engine warning light) malfunction Combination meter assembly (LED)

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MIL circuit

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Combination meter assembly

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PCS warning light malfunction (w/ Pre-crash Safety System) Combination meter assembly (LED)

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Pre-crash safety system

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Combination meter assembly

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Slip indicator light does not come on. Combination meter assembly (LED)

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Slip indicator light circuit

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Combination meter assembly

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Slip indicator light does not go off. Combination meter assembly (LED)

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Slip indicator light circuit

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Combination meter assembly

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ABS warning light does not come on. Combination meter assembly (LED)

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ABS warning light circuit

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Combination meter assembly

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ABS warning light does not go off. Combination meter assembly (LED)

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ABS warning light circuit

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Combination meter assembly

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Electrically controlled brake warning light does not come on. Combination meter assembly (LED)

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Brake control warning light circuit

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Combination meter assembly

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Electrically controlled brake warning light does not go off. Combination meter assembly (LED)

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Brake control warning light circuit

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Combination meter assembly

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Fuel level warning light malfunction Combination meter assembly (LED)

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Fuel sender gauge assembly

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Wire harness or connector -
Combination meter assembly

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Rear fog indicator light malfunction Combination meter assembly (LED)

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Lighting system

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Combination meter assembly

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Headlight leveling indicator light malfunction (w/ Automatic Type Headlight Beam Level Control) Combination meter assembly (LED)

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Headlight leveling ECU assembly -
Wire harness or connector -
Combination meter assembly

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High beam indicator light malfunction Combination meter assembly (LED)

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Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Ready indicator light malfunction Combination meter assembly (LED)

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Power management control ECU -
Combination meter assembly

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Tail indicator light malfunction Combination meter assembly (LED)

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Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Front fog indicator light malfunction Combination meter assembly (LED)

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Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Turn indicator light malfunction Turn signal flasher assembly

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Wire harness or connector -
Combination meter assembly

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Eco mode indicator light malfunction Combination meter assembly (LED)

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Combination switch assembly

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Power management control ECU -
Combination meter assembly

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Sport mode indicator light malfunction Combination meter assembly (LED)

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Combination switch assembly

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Power management control ECU -
Combination meter assembly

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EV indicator light malfunction Combination meter assembly (LED)

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Combination switch assembly

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Power management control ECU -
Combination meter assembly

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Cruise main (Constant speed control mode) indicator light malfunction Combination meter assembly (LED)

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Cruise control system

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Combination meter assembly

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Cruise main (Vehicle-to-vehicle distance control mode) indicator light malfunction (w/ Dynamic Radar Cruise Control System) Combination meter assembly (LED)

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Dynamic radar cruise control system

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Combination meter assembly

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Clearance sonar indicator light malfunction (w/ Lexus Parking Assist-sensor System) Combination meter assembly (LED)

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Lexus parking assist-sensor system

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Combination meter assembly

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EV mode indicator light malfunction Combination meter assembly (LED)

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Combination switch assembly

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Power management control ECU -
Combination meter assembly

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Shift selection indicator light malfunction Combination meter assembly (LED)

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Power management control ECU -
Combination meter assembly

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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)

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Wire harness or connector -
Combination meter assembly

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Energy flow display malfunction Hybrid control system

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Combination meter assembly

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Current fuel consumption display malfunction ECM -
Skid control ECU assembly -
Combination meter assembly

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Average fuel consumption display malfunction ECM -
Skid control ECU assembly -
Combination meter assembly

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Average fuel consumption after refueling display malfunction ECM -
Skid control ECU assembly -
Combination meter assembly

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Driving distance display malfunction ECM -
Fuel sender gauge assembly

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Wire harness or connector -
Combination meter assembly

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Driving time display malfunction Combination meter assembly

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Average speed display malfunction Skid control ECU assembly -
Combination meter assembly

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Outside temperature display malfunction Air conditioning amplifier assembly

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Combination meter assembly

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Rear seat belt warning display malfunction (w/ Rear Seat Belt Warning) Rear seat inner belt assembly RH

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Rear seat inner with center belt assembly LH (for Center)

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Rear seat inner with center belt assembly LH (for LH)

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Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Customized parameters cannot be changed (Customized parameters can be changed by using the intelligent tester). Combination meter assembly

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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)

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Combination meter assembly

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Operating DISP switch (steering pad switch assembly) does not change multi-information display. DISP switch (Steering pad switch assembly)

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Wire harness or connector -
Combination meter assembly

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Maintenance mode display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Certification mode display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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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

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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

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Combination meter assembly

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Checking cruise control brake display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) Dynamic radar cruise control system

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Combination meter assembly

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Brake! display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) Seat belt control ECU -
Combination meter assembly

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Open door warning is displayed, not displayed, or not displayed correctly. Door courtesy light switch

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Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Clearance sonar display is displayed, not displayed, or not displayed correctly. (w/ Lexus Parking Assist-sensor System) Lexus parking assist-sensor system

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Combination meter assembly

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Check sonar display is displayed, not displayed, or not displayed correctly. (w/ Lexus Parking Assist-sensor System) Lexus parking assist-sensor system

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Combination meter assembly

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Clean sonar display is displayed, not displayed, or not displayed correctly (w/ Lexus Parking Assist-sensor System). Lexus parking assist-sensor system

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Combination meter assembly

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Auto power off to conserve battery display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Shift to P position display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Rear seat belt reminder display is displayed, not displayed, or not displayed correctly. (w/ Rear Seat Belt Warning) Rear seat inner belt assembly RH

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Rear seat inner with center belt assembly LH (for Center)

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Rear seat inner with center belt assembly LH (for LH)

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Wire harness or connector -
Combination meter assembly

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Shift to P position when parked display is displayed, not displayed, or not displayed correctly. Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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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

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N position display is displayed, not displayed, or not displayed correctly. Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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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

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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

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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

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Check hybrid system display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Release parking brake display is displayed, not displayed, or not displayed correctly. Parking brake switch assembly (for LHD)

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Parking brake switch assembly (for RHD)

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Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Key not detected display is displayed, not displayed, or not displayed correctly. Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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Speed limit exceeded display is displayed, not displayed, or not displayed correctly. (for G.C.C. Countries). Skid control ECU assembly -
Combination meter assembly

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Clean radar sensor display is displayed, not displayed, or not displayed correctly (w/ Pre-crash Safety System). Pre-crash safety system

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Combination meter assembly

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Cruise control not available display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) Dynamic radar cruise control system

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Combination meter assembly

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Check cruise control system display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) Dynamic radar cruise control system

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Combination meter assembly

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Check PCS system display is displayed, not displayed, or not displayed correctly. (w/ Pre-crash Safety System) Seat belt control ECU -
Combination meter assembly

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Check headlight system display is displayed, not displayed, or not displayed correctly. Lighting system

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Combination meter assembly

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Turn power off display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Key detected in vehicle display is displayed, not displayed, or not displayed correctly. Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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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

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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

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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

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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

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Shift to P position to start display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Key battery low display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Hybrid system overheat display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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Low washer fluid display is displayed, not displayed, or not displayed correctly. Washer fluid level warning switch

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Wire harness or connector -
Combination meter assembly

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PCS temporarily not available display is displayed, not displayed, or not displayed correctly. (w/ Pre-crash Safety System) Pre-crash safety system

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Combination meter assembly

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EV mode currently not available display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode currently not available warming up display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode currently not available low battery display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode currently not available excessive speed display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode currently not available excessive acceleration display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode deactivated display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode deactivated low battery display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode deactivated excessive speed display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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EV mode deactivated excessive acceleration display is displayed, not displayed, or not displayed correctly. Power management control ECU -
Combination meter assembly

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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

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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

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Buzzer
Symptom Suspected Area See page
Multi-information display warning buzzer malfunction Power management control ECU -
Combination meter assembly

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Ready buzzer malfunction Power management control ECU -
Combination meter assembly

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Seat belt warning buzzer malfunction Driver side seat belt warning light circuit

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Front passenger side seat belt warning light circuit

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Main body ECU (Multiplex network body ECU) -
Rear seat inner belt assembly RH (w/ Rear Seat Belt Warning)

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Rear seat inner with center belt assembly LH (for Center) (w/ Rear Seat Belt Warning)

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Rear seat inner with center belt assembly LH (for LH) (w/ Rear Seat Belt Warning)

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Wire harness or connector -
Combination meter assembly

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EPS warning buzzer malfunction Power steering system

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Combination meter assembly

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Entry and start system warning buzzer malfunction (Intermittent) Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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Immobiliser key identification completion buzzer malfunction Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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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

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Combination meter assembly

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Entry and start system warning buzzer malfunction (Single) Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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Brake control system warning buzzer malfunction Skid control ECU assembly -
Combination meter assembly

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Smart key warning buzzer malfunction (Continual) Certification ECU (Smart key ECU assembly) -
Combination meter assembly

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Shift selection P request buzzer malfunction Power management control ECU -
Combination meter assembly

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HV battery charge request buzzer malfunction Power management control ECU -
Combination meter assembly

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Speed limit exceeded warning buzzer malfunction (for G.C.C. Countries) Skid control ECU assembly -
Combination meter assembly

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Driving with parking brake unreleased warning buzzer malfunction Main body ECU (Multiplex network body ECU) -
Skid control ECU assembly -
Combination meter assembly

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Driving with any door opened warning buzzer malfunction Main body ECU (Multiplex network body ECU) -
Skid control ECU assembly -
Combination meter assembly

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Sports shift reject buzzer malfunction Power management control ECU -
Combination meter assembly

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Shift operation reject buzzer malfunction Power management control ECU -
Combination meter assembly

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EV reject buzzer malfunction Power management control ECU -
Combination meter assembly

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Light reminder buzzer malfunction (w/ Light Reminder) Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Sliding roof warning buzzer malfunction (w/ Sliding Roof) Main body ECU (Multiplex network body ECU) -
Combination meter assembly

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Depress the accelerator pedal with shift selection N buzzer malfunction Power management control ECU -
Combination meter assembly

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Others
Symptom Suspected Area See page
Other systems that uses the speed signal do not operate normally. Speed signal circuit

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Eco light (blue) or sport light (red) malfunction Combination meter assembly

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