Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001KNE3
Model Year Start: 2020 Model: RAV4 Prod Date Range: [10/2019 - 10/2023]
Title: STOP AND START: STOP AND START SYSTEM: PROBLEM SYMPTOMS TABLE; 2020 - 2023 MY RAV4 [10/2019 - 10/2023]

PROBLEM SYMPTOMS TABLE

HINT:

  • 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.

Stop and Start System

Symptom

Suspected Area

Link

Stop and start system does not operate

Stop and start system operation prohibition based on the battery conditions (Refer to "Stop and Start System does not Operate (Battery Condition)")

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start System does not Operate (Battery Condition)

Engine hood courtesy switch circuit

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Engine Hood Courtesy Switch Circuit

Driver door courtesy switch circuit (system prohibits control)

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION

Driver door courtesy switch circuit (CAN communication DTC U014087)

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: U010087,U012687,U012987,U013187,U014087,U015187,U016487,U023A87,U111087; Lost Communication with ECM/PCM "A" Missing Message

Driver door courtesy switch circuit

2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Door Courtesy Switch Circuit

Driver seat belt buckle switch circuit (system prohibits control)

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION

Driver seat belt buckle switch circuit (CAN communication DTC U014087)

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: U010087,U012687,U012987,U013187,U014087,U015187,U016487,U023A87,U111087; Lost Communication with ECM/PCM "A" Missing Message

Front seat inner belt assembly LH

2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; SEAT BELT: SEAT BELT WARNING SYSTEM (w/ Occupant Classification System): Driver Side Seat Belt Warning Light does not Operate 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; SEAT BELT: SEAT BELT WARNING SYSTEM: Driver Side Seat Belt Warning Light does not Operate

Air conditioning system (system prohibits control)

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION

Air conditioning system

2019 - 2024 MY RAV4 [11/2018 -        ]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Brake booster vacuum is low (system prohibits control)

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: SYSTEM DESCRIPTION

Brake booster vacuum is low

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: P055500,P05552A; Brake Booster Pressure Sensor(running)

Backup boost converter circuit

2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: STOP AND START SYSTEM: Backup Boost Converter Circuit 2021 MY RAV4 [08/2020 - 12/2021]; STOP AND START: STOP AND START SYSTEM: Backup Boost Converter Circuit 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Backup Boost Converter Circuit 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Backup Boost Converter Circuit

Park/Neutral position switch assembly circuit

2020 - 2023 MY RAV4 [10/2019 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Neutral Position Switch Circuit

Starter signal circuit

2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: STOP AND START SYSTEM: Starter Signal Circuit 2021 MY RAV4 [08/2020 - 12/2021]; STOP AND START: STOP AND START SYSTEM: Starter Signal Circuit 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Starter Signal Circuit

STA signal circuit

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; STOP AND START: STOP AND START SYSTEM: STA Signal Circuit 2021 MY RAV4 [08/2020 - 12/2021]; STOP AND START: STOP AND START SYSTEM: STA Signal Circuit 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; STOP AND START: STOP AND START SYSTEM: STA Signal Circuit

Starter inrush current reduction relay circuit

2019 - 2021 MY RAV4 [11/2018 - 12/2021]; STOP AND START: STOP AND START SYSTEM: Starter Inrush Current Reduction Relay Circuit 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Starter Inrush Current Reduction Relay Circuit

Crankshaft position sensor

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/ Canister Pump Module): HOW TO PROCEED WITH TROUBLESHOOTING 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

ECM

2020 MY RAV4 [10/2019 - 08/2020]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/ Canister Pump Module): TERMINALS OF ECM 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: TERMINALS OF ECM 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: TERMINALS OF ECM

Vacuum sensor assembly

2019 - 2024 MY RAV4 [11/2018 -        ]; STOP AND START: VACUUM SENSOR ASSEMBLY: ON-VEHICLE INSPECTION

Brake booster assembly

2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; BRAKE SYSTEM (OTHER): BRAKE BOOSTER (w/ Vacuum Brake Booster): ON-VEHICLE INSPECTION

Oil pump with solenoid assembly (for 2WD)

2020 - 2024 MY RAV4 [10/2019 -        ]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): OIL PUMP: INSPECTION+

Oil pump with solenoid assembly (for AWD)

2019 - 2024 MY RAV4 [11/2018 -        ]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): OIL PUMP: INSPECTION+

Starter assembly

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION 2021 MY RAV4 [08/2020 - 12/2021]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION 2022 - 2024 MY RAV4 [12/2021 -        ]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION

The deceleration sensor zero point calibration is performed

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

Deceleration sensor (airbag ECU assembly)

2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: ON-VEHICLE INSPECTION 2021 - 2024 MY RAV4 RAV4 HV [08/2020 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: ON-VEHICLE INSPECTION

Skid control ECU (brake actuator assembly)

2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): TERMINALS OF ECU 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): TERMINALS OF ECU

CAN communication system

2019 - 2024 MY RAV4 [11/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Engine stop and start ECU

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU

Battery*1

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; A25A-FKS (BATTERY / CHARGING): CHARGING SYSTEM: ON-VEHICLE INSPECTION

Wire harness or connector

-

Starter assembly does not operate

Battery

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; A25A-FKS (BATTERY / CHARGING): CHARGING SYSTEM: ON-VEHICLE INSPECTION

Starter assembly

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION 2021 MY RAV4 [08/2020 - 12/2021]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION 2022 - 2024 MY RAV4 [12/2021 -        ]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION

Park/Neutral position switch assembly (for 2WD)

2019 - 2024 MY RAV4 [11/2018 -        ]; UB80E (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: INSPECTION

Park/Neutral position switch assembly (for AWD)

2019 - 2024 MY RAV4 [11/2018 -        ]; UB80F (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: INSPECTION

Smart key system (for start function)

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2021 MY RAV4 [08/2020 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Starter signal circuit (SFI system)

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM (w/ Canister Pump Module): Starter Signal Circuit 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: Starter Signal Circuit 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]; A25A-FKS (ENGINE CONTROL): SFI SYSTEM: Starter Signal Circuit

Starter signal circuit

2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: STOP AND START SYSTEM: Starter Signal Circuit 2021 MY RAV4 [08/2020 - 12/2021]; STOP AND START: STOP AND START SYSTEM: Starter Signal Circuit 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Starter Signal Circuit

Cranking speed decreases

Battery

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; A25A-FKS (BATTERY / CHARGING): CHARGING SYSTEM: ON-VEHICLE INSPECTION

Starter inrush current reduction relay circuit

2019 - 2021 MY RAV4 [11/2018 - 12/2021]; STOP AND START: STOP AND START SYSTEM: Starter Inrush Current Reduction Relay Circuit 2022 - 2023 MY RAV4 [12/2021 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Starter Inrush Current Reduction Relay Circuit

Starter assembly

2019 - 2020 MY RAV4 [11/2018 - 08/2020]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION 2021 MY RAV4 [08/2020 - 12/2021]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION 2022 - 2024 MY RAV4 [12/2021 -        ]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): INSPECTION

Stop and start cancel indicator does not operate

Combination meter assembly

2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

Indicator circuit (CAN communication system)

2019 - 2024 MY RAV4 [11/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Engine stop and start ECU

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU

Stop and start indicator does not operate

Combination meter assembly

2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

Indicator circuit (CAN communication system)

2019 - 2024 MY RAV4 [11/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

Engine stop and start ECU

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU

Stop and start control cannot be canceled

ECAN terminal voltage

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU

Stop and start cancel switch circuit

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Cancel Switch Circuit

Engine not stopped by stop and start control (stop and start operation prohibited)

Engine hood courtesy switch circuit

2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Engine Hood Courtesy Switch Circuit

Driver side door courtesy switch circuit

2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; LIGHTING (INT): LIGHTING SYSTEM: Door Courtesy Switch Circuit

Stop light switch assembly

2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; LIGHTING (EXT): STOP LIGHT SWITCH: ON-VEHICLE INSPECTION

Engine stop and start ECU

2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: TERMINALS OF ECU

Multi-information display screen does not change after pressing steering pad switch assembly

Stop and start priority control system

2019 - 2022 MY RAV4 [11/2018 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System

Multi-information display screen changes without pressing steering pad switch assembly

Stop and start priority control system

2019 - 2022 MY RAV4 [11/2018 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System

An interruption message is not displayed in the combination meter assembly when the stop and start system cancel switch (eco run cancel switch assembly) is pressing and holding

Stop and start priority control system

2019 - 2022 MY RAV4 [11/2018 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System

The control mode changes but an interruption message is not displayed in the combination meter assembly

Stop and start priority control system

2019 - 2022 MY RAV4 [11/2018 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System

The control mode does not change but an interruption message is displayed in the combination meter assembly

Stop and start priority control system

2019 - 2022 MY RAV4 [11/2018 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System

Control mode returns to default mode after turning ignition switch to ON

Stop and start priority control system

2019 - 2022 MY RAV4 [11/2018 - 10/2022]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: Stop and Start Priority Control System

  • *1: If the vehicle has not been used for a long time, the battery charge may be low and stop and start control operation may be prohibited. In this case, recharge the battery, initialize the integrated current value*2 and drive the vehicle approximately 5 to 40 minutes until stop and start control operation is permitted.

    *2: Use the Techstream to perform Integrated Current Value Initialization.

    Click here 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2022 MY RAV4 [12/2021 - 10/2022]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2023 MY RAV4 [10/2022 - 10/2023]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

    HINT:

    If the Data List item "Integrated Current" is A-sec or more, it is not necessary to perform initialization.