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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Speedometer malfunction | Speedometer circuit | |
| Tachometer malfunction | Tachometer circuit | |
| Fuel receiver gauge malfunction | Fuel receiver gauge circuit | |
| ODO, TRIP A, TRIP B meter malfunction | Combination meter assembly | |
| HV system indicator malfunction | Hybrid system indicator circuit | |
| Operating light control rheostat does not change light brightness | Light control rheostat circuit | |
| Meter illumination is always dark. | Illumination circuit | |
| Meter illumination does not dim at night. | Illumination circuit |
| Symptom | Suspected Area | See page |
|---|---|---|
| Master warning light malfunction | Combination meter assembly (LED) | |
| Combination meter assembly | ||
| Open door warning light malfunction | Combination meter assembly (LED) | |
| Door courtesy light switch | ||
| Main body ECU (Multiplex network body ECU) | - | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Brake warning light does not come on. | Combination meter assembly (LED) | |
| Brake warning light circuit | ||
| Combination meter assembly | ||
| Brake warning light does not go off. | Combination meter assembly (LED) | |
| Brake warning light circuit | ||
| Combination meter assembly | ||
| Seat belt warning light malfunction | Combination meter assembly (LED) | |
| Driver side seat belt warning light circuit | ||
| Front passenger side seat belt warning light circuit | ||
| Combination meter assembly | ||
| SRS warning light does not come on. | Combination meter assembly (LED) | |
| SRS warning light circuit | ||
| Combination meter assembly | ||
| SRS warning light does not go off. | Combination meter assembly (LED) | |
| SRS warning light circuit | ||
| Combination meter assembly | ||
| Water temperature warning light malfunction | Combination meter assembly (LED) | |
| Cooling system | ||
| Engine coolant temperature sensor | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Oil pressure warning light malfunction | Combination meter assembly (LED) | |
| Oil Pressure Switch (for 2ZR-FXE) | ||
| Oil Pressure Switch (for 5ZR-FXE) | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Charge warning light malfunction | Combination meter assembly (LED) | |
| Power management control ECU | - | |
| Combination meter assembly | ||
| EPS warning light malfunction | Combination meter assembly (LED) | |
| EPS warning light circuit | ||
| Combination meter assembly | ||
| MIL (Check engine warning light) malfunction | Combination meter assembly (LED) | |
| MIL circuit (for 2ZR-FXE) | ||
| MIL circuit (for 5ZR-FXE) | ||
| Combination meter assembly | ||
| PCS warning light malfunction (w/ Pre-crash Safety System) | Combination meter assembly (LED) | |
| Pre-crash safety system | ||
| Combination meter assembly | ||
| Slip indicator light does not come on. | Combination meter assembly (LED) | |
| Slip indicator light circuit | ||
| Combination meter assembly | ||
| Slip indicator light does not go off. | Combination meter assembly (LED) | |
| Slip indicator light circuit | ||
| Combination meter assembly | ||
| ABS warning light does not come on. | Combination meter assembly (LED) | |
| ABS warning light circuit | ||
| Combination meter assembly | ||
| ABS warning light does not go off. | Combination meter assembly (LED) | |
| ABS warning light circuit | ||
| Combination meter assembly | ||
| Electrically controlled brake warning light does not come on. | Combination meter assembly (LED) | |
| Brake control warning light circuit | ||
| Combination meter assembly | ||
| Electrically controlled brake warning light does not go off. | Combination meter assembly (LED) | |
| Brake control warning light circuit | ||
| Combination meter assembly | ||
| Fuel level warning light malfunction | Combination meter assembly (LED) | |
| Fuel sender gauge assembly (for 2ZR-FXE) | ||
| Fuel sender gauge assembly (for 5ZR-FXE) | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Rear fog indicator light malfunction | Combination meter assembly (LED) | |
| Lighting system | ||
| Combination meter assembly | ||
| Headlight leveling indicator light malfunction (w/ Automatic Type Headlight Beam Level Control) | Combination meter assembly (LED) | |
| Headlight leveling ECU assembly | - | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| High beam indicator light malfunction | Combination meter assembly (LED) | |
| Main body ECU (Multiplex network body ECU) | - | |
| Combination meter assembly | ||
| Ready indicator light malfunction | Combination meter assembly (LED) | |
| Power management control ECU | - | |
| Combination meter assembly | ||
| Tail indicator light malfunction | Combination meter assembly (LED) | |
| Main body ECU (Multiplex network body ECU) | - | |
| Combination meter assembly | ||
| Front fog indicator light malfunction | Combination meter assembly (LED) | |
| Main body ECU (Multiplex network body ECU) | - | |
| Combination meter assembly | ||
| Turn indicator light malfunction | Turn signal flasher assembly | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Eco mode indicator light malfunction | Combination meter assembly (LED) | |
| Combination switch assembly | ||
| Power management control ECU | - | |
| Combination meter assembly | ||
| Sport mode indicator light malfunction | Combination meter assembly (LED) | |
| Combination switch assembly | ||
| Power management control ECU | - | |
| Combination meter assembly | ||
| EV indicator light malfunction | Combination meter assembly (LED) | |
| Combination switch assembly | ||
| Power management control ECU | - | |
| Combination meter assembly | ||
| Cruise main (Constant speed control mode) indicator light malfunction | Combination meter assembly (LED) | |
| Cruise control system | ||
| Combination meter assembly | ||
| Cruise main (Vehicle-to-vehicle distance control mode) indicator light malfunction (w/ Dynamic Radar Cruise Control System) | Combination meter assembly (LED) | |
| Dynamic radar cruise control system | ||
| Combination meter assembly | ||
| Clearance sonar indicator light malfunction (w/ Lexus Parking Assist-sensor System) | Combination meter assembly (LED) | |
| Lexus parking assist-sensor system | ||
| Combination meter assembly | ||
| EV mode indicator light malfunction | Combination meter assembly (LED) | |
| Combination switch assembly | ||
| Power management control ECU | - | |
| Combination meter assembly | ||
| Shift selection indicator light malfunction | Combination meter assembly (LED) | |
| Power management control ECU | - | |
| Combination meter assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Operating DISP switch (steering pad switch assembly) does not change cruise information display. | DISP switch (Steering pad switch assembly) | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Energy flow display malfunction | Hybrid control system | |
| Combination meter assembly | ||
| Current fuel consumption display malfunction | ECM | - |
| Skid control ECU assembly | - | |
| Combination meter assembly | ||
| Average fuel consumption display malfunction | ECM | - |
| Skid control ECU assembly | - | |
| Combination meter assembly | ||
| Average fuel consumption after refueling display malfunction | ECM | - |
| Skid control ECU assembly | - | |
| Combination meter assembly | ||
| Driving distance display malfunction | ECM | - |
| Fuel sender gauge assembly | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Driving time display malfunction | Combination meter assembly | |
| Average speed display malfunction | Skid control ECU assembly | - |
| Combination meter assembly | ||
| Outside temperature display malfunction | Air conditioning amplifier assembly | |
| Combination meter assembly | ||
| Rear seat belt warning display malfunction (w/ Rear Seat Belt Warning) | Rear seat inner belt assembly RH | |
| Rear seat inner with center belt assembly LH (for Center) | ||
| Rear seat inner with center belt assembly LH (for LH) | ||
| Main body ECU (Multiplex network body ECU) | - | |
| Combination meter assembly | ||
| Customized parameters cannot be changed (Customized parameters can be changed by using the intelligent tester). | Combination meter assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Multi-information display does not light up (Combination meter assembly operates normally). | Combination meter assembly (Multi-information display) | |
| Combination meter assembly | ||
| Operating DISP switch (steering pad switch assembly) does not change multi-information display. | DISP switch (Steering pad switch assembly) | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Maintenance mode display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Certification mode display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| 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 | ||
| 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 | |
| Combination meter assembly | ||
| Checking cruise control brake display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) | Dynamic radar cruise control system | |
| Combination meter assembly | ||
| Brake! display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) | Seat belt control ECU | - |
| Combination meter assembly | ||
| Open door warning is displayed, not displayed, or not displayed correctly. | Door courtesy light switch | |
| Main body ECU (Multiplex network body ECU) | - | |
| Combination meter assembly | ||
| Clearance sonar display is displayed, not displayed, or not displayed correctly. (w/ Lexus Parking Assist-sensor System) | Lexus parking assist-sensor system | |
| Combination meter assembly | ||
| Check sonar display is displayed, not displayed, or not displayed correctly. (w/ Lexus Parking Assist-sensor System) | Lexus parking assist-sensor system | |
| Combination meter assembly | ||
| Clean sonar display is displayed, not displayed, or not displayed correctly (w/ Lexus Parking Assist-sensor System). | Lexus parking assist-sensor system | |
| Combination meter assembly | ||
| Auto power off to conserve battery display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Shift to P position display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Rear seat belt reminder display is displayed, not displayed, or not displayed correctly. (w/ Rear Seat Belt Warning) | Rear seat inner belt assembly RH | |
| Rear seat inner with center belt assembly LH (for Center) | ||
| Rear seat inner with center belt assembly LH (for LH) | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| Shift to P position when parked display is displayed, not displayed, or not displayed correctly. | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| 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 | ||
| N position display is displayed, not displayed, or not displayed correctly. | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| 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 | ||
| 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 | ||
| 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 | ||
| Check hybrid system display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Release parking brake display is displayed, not displayed, or not displayed correctly. | Parking brake switch assembly (for LHD) | |
| Parking brake switch assembly (for RHD) | ||
| Main body ECU (Multiplex network body ECU) | - | |
| Combination meter assembly | ||
| Key not detected display is displayed, not displayed, or not displayed correctly. | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| Speed limit exceeded display is displayed, not displayed, or not displayed correctly. (for G.C.C. Countries). | Skid control ECU assembly | - |
| Combination meter assembly | ||
| Clean radar sensor display is displayed, not displayed, or not displayed correctly (w/ Pre-crash Safety System). | Pre-crash safety system | |
| Combination meter assembly | ||
| Cruise control not available display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) | Dynamic radar cruise control system | |
| Combination meter assembly | ||
| Check cruise control system display is displayed, not displayed, or not displayed correctly. (w/ Dynamic Radar Cruise Control System) | Dynamic radar cruise control system | |
| Combination meter assembly | ||
| Check PCS system display is displayed, not displayed, or not displayed correctly. (w/ Pre-crash Safety System) | Seat belt control ECU | - |
| Combination meter assembly | ||
| Check headlight system display is displayed, not displayed, or not displayed correctly. | Lighting system | |
| Combination meter assembly | ||
| Turn power off display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Key detected in vehicle display is displayed, not displayed, or not displayed correctly. | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| 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 | ||
| 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 | ||
| 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 | ||
| 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 | ||
| Shift to P position to start display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Key battery low display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Hybrid system overheat display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| Low washer fluid display is displayed, not displayed, or not displayed correctly. | Washer fluid level warning switch | |
| Wire harness or connector | - | |
| Combination meter assembly | ||
| PCS temporarily not available display is displayed, not displayed, or not displayed correctly. (w/ Pre-crash Safety System) | Pre-crash safety system | |
| Combination meter assembly | ||
| EV mode currently not available display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode currently not available warming up display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode currently not available low battery display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode currently not available excessive speed display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode currently not available excessive acceleration display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode deactivated display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode deactivated low battery display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode deactivated excessive speed display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| EV mode deactivated excessive acceleration display is displayed, not displayed, or not displayed correctly. | Power management control ECU | - |
| Combination meter assembly | ||
| 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 | ||
| 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 |
| Symptom | Suspected Area | See page |
|---|---|---|
| Multi-information display warning buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| Ready buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| Seat belt warning buzzer malfunction | Driver side seat belt warning light circuit | |
| Front passenger side seat belt warning light circuit | ||
| Main body ECU (Multiplex network body ECU) | - | |
| Rear seat inner belt assembly RH (w/ Rear Seat Belt Warning) | ||
| Rear seat inner with center belt assembly LH (for Center) (w/ Rear Seat Belt Warning) | ||
| Rear seat inner with center belt assembly LH (for LH) (w/ Rear Seat Belt Warning) | ||
| Wire harness or connector | - | |
| Combination meter assembly | ||
| EPS warning buzzer malfunction | Power steering system | |
| Combination meter assembly | ||
| Entry and start system warning buzzer malfunction (Intermittent) | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| Immobiliser key identification completion buzzer malfunction | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| 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 | |
| Combination meter assembly | ||
| Entry and start system warning buzzer malfunction (Single) | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| Brake control system warning buzzer malfunction | Skid control ECU assembly | - |
| Combination meter assembly | ||
| Smart key warning buzzer malfunction (Continual) | Certification ECU (Smart key ECU assembly) | - |
| Combination meter assembly | ||
| Shift selection P request buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| HV battery charge request buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| Speed limit exceeded warning buzzer malfunction (for G.C.C. Countries) | Skid control ECU assembly | - |
| Combination meter assembly | ||
| Driving with parking brake unreleased warning buzzer malfunction | Main body ECU (Multiplex network body ECU) | - |
| Skid control ECU assembly | - | |
| Combination meter assembly | ||
| Driving with any door opened warning buzzer malfunction | Main body ECU (Multiplex network body ECU) | - |
| Skid control ECU assembly | - | |
| Combination meter assembly | ||
| Sports shift reject buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| Shift operation reject buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| EV reject buzzer malfunction | Power management control ECU | - |
| Combination meter assembly | ||
| Light reminder buzzer malfunction (w/ Light Reminder) | Main body ECU (Multiplex network body ECU) | - |
| Combination meter assembly | ||
| Sliding roof warning buzzer malfunction (w/ Sliding Roof) | Main body ECU (Multiplex network body ECU) | - |
| Combination meter assembly | ||
| Depress the accelerator pedal with shift selection N buzzer malfunction | Power management control ECU | - |
| Combination meter assembly |
| Symptom | Suspected Area | See page |
|---|---|---|
| Other systems that uses the speed signal do not operate normally. | Speed signal circuit | |
| Eco light (blue) or sport light (red) malfunction | Combination meter assembly | |
| Warning notification display malfunction (w/ G-BOOK System) | Combination meter assembly | |
| G-BOOK system |