Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EEKA
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 12/2021]
Title: STOP AND START: STOP AND START SYSTEM: P154563; Starter Exceed Limited Number; 2019 - 2021 MY RAV4 [11/2018 - 12/2021]

DTC

P154563

Starter Exceed Limited Number

DESCRIPTION

When the number of starter operations reaches the maximum number, the engine stop and start ECU stores DTC P154563 and blinks the stop and start cancel indicator.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

Note

P154563

Starter Exceed Limited Number

Both of the following conditions are met (1 trip detection logic):

  • Ignition switch ON.
  • The number of starter operations reaches the specified limit.
  • Starter assembly
  • Engine stop and start ECU

Blinks

DTC stored

SAE Code: P1545

CONFIRMATION DRIVING PATTERN

HINT:

  • If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.

    In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)

  • If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

    If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

  • After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
  • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.

CONFIRMATION AFTER TROUBLESHOOTING

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs.

Powertrain > Stop and Start > Clear DTCs

(e) Start the engine and warm it up.

(f) Drive the vehicle at 7 km/h (4 mph) or more.

CAUTION:

When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

(g) Depress the brake pedal and stop the vehicle.

(h) Keep the engine stopped by stop and start control. (Keep the shift lever in D.)

(i) Release the brake pedal with the shift lever in D to start the engine.

(j) Check that no DTCs are output.

Powertrain > Stop and Start > Trouble Codes

STOP AND START SYSTEM OPERATION CHECK

HINT:

  • If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.

    In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)

  • If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

    If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

  • After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.

(a) Start the engine and warm it up.

(b) Turn the air conditioning system off.

(c) Drive the vehicle at 7 km/h (4 mph) or more.

CAUTION:

When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

(d) Depress the brake pedal and stop the vehicle.

(e) Allow the engine to stop by stop and start control. (Keep the shift lever in D.)

(f) Release the brake pedal with the shift lever in D to start the engine.

CAUTION / NOTICE / HINT

NOTICE:

  • Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • When the engine stop and start ECU or oil pump with solenoid assembly is replaced, check the oil pump with solenoid assembly.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • After replacing the starter assembly, perform initialization of the number of starter operations stored in the engine stop and start ECU.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

  • When the starter assembly is replaced, "ST NO. 1 relay" and "ST NO. 2 relay" must be also replaced.

HINT:

  • Using the Techstream, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

    Click here 2019 - 2021 MY RAV4 [11/2018 - 12/2021]; STOP AND START: STOP AND START SYSTEM: FREEZE FRAME DATA

  • DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

    Click here 2019 - 2023 MY RAV4 [11/2018 - 10/2023]; STOP AND START: STOP AND START SYSTEM: DTC CHECK / CLEAR

PROCEDURE

1.

READ VALUE USING TECHSTREAM (STARTER OPERATION #)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Stop and Start / Data List / Starter Operation #.

Powertrain > Stop and Start > Data List

Tester Display

Starter Operation #

(e) According to the display on the Techstream, read the Data List.

Result

Proceed to

384000 or more

(Displays 1000000 or more)*

A

Below 384000

B

HINT:

*: If "Starter Operation #" displays 1000000 or more, it is necessary to replace the engine stop and start ECU as there is an internal malfunction in the ECU.

B

USE SIMULATION METHOD TO CHECK

A

2.

REPLACE STARTER ASSEMBLY

(a) Replace the starter assembly

Click here 2019 MY RAV4 [11/2018 - 02/2019]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): REMOVAL 2019 - 2020 MY RAV4 [02/2019 - 08/2020]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): REMOVAL 2021 MY RAV4 [08/2020 - 12/2021]; A25A-FKS (STARTING): STARTER (w/ Stop And Start System): REMOVAL

HINT:

  • When the starter assembly is replaced, "ST NO. 1 relay" and "ST NO. 2 relay" must be also replaced.
  • If "Starter Operation #" displays 1000000 or more, the engine stop and start ECU must also be replaced.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL 2020 MY RAV4 [10/2019 - 08/2020]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL 2021 - 2022 MY RAV4 [08/2020 - 10/2022]; STOP AND START: ENGINE STOP AND START ECU: REMOVAL

  • Clear the number of starter operations by performing "Starter Exchange" using the Techstream.

    Click here 2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION 2020 - 2021 MY RAV4 [10/2019 - 12/2021]; STOP AND START: STOP AND START SYSTEM: REGISTRATION

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