Toyota Avalon (XX50): New Key Registration Warning Message is not Displayed. Operation Check. Parts Location

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System(for Start Function, Hv Model) / New Key Registration Warning Message is not Displayed. Operation Check. Parts Location

New Key Registration Warning Message is not Displayed

DESCRIPTION

If the new key registration warning message is not displayed after an electrical key transmitter sub-assembly has been registered, there may be communication problem between the certification ECU (smart key ECU assembly) and combination meter assembly (meter ECU).

CAUTION / NOTICE / HINT

NOTICE:

When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
The smart key system (for Start Function, HV Model) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function, HV Model) after confirming that the communication systems are functioning properly.
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Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
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After repair, confirm that no DTCs are output.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.

PROCEDURE

1.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

2.	READ VALUE USING TECHSTREAM (FL DOOR COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FL Door Courtesy SW	Front door LH courtesy light switch signal	OFF or ON	OFF: Front door LH closed ON: Front door LH open	-

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FL Door Courtesy SW

Front door LH courtesy light switch signal

OFF or ON

OFF: Front door LH closed

ON: Front door LH open

Body Electrical > Main Body > Data List

Tester Display
FL Door Courtesy SW

Result	Proceed to
On the Techstream screen, ON or OFF is displayed accordingly.	A
On the Techstream screen, ON or OFF is not displayed accordingly.	B

GO TO LIGHTING SYSTEM

3.	CHECK METER / GAUGE SYSTEM

(a) With the electrical key transmitter sub-assembly in the vehicle and all of the doors closed, lock the doors using the entry lock function and check that the warning message is displayed on the multi-information display.

NOTICE:

In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.

HINT:

Key lock-in prevention function (vehicle interior).

Click here

Result	Proceed to
The warning message is displayed on the multi-information display.	A
The warning message is not displayed on the multi-information display.	B

GO TO METER / GAUGE SYSTEM

4.	ADDITIONAL KEY REGISTRATION

(a) Clear all of the registered electrical key transmitter sub-assemblies except one and perform registration again.

Click here

5.	CHECK MULTI-INFORMATION DISPLAY

(a) With all of the doors closed, lock the doors using the entry lock function.

(b) Unlock the doors using the entry unlock function, open the driver door and check that the warning message is displayed on the multi-information display.

Result	Proceed to
The warning message is displayed on the multi-information display.	A
The warning message is not displayed on the multi-information display.	B

END (10 DAYS MAY HAVE ELAPSED SINCE AN ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS REGISTERED)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Operation Check

OPERATION CHECK

CHECK CUSTOMIZE PARAMETERS

(a) The operation check below is based on the non-customized initial condition of the vehicle.

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CHECK PUSH-BUTTON START FUNCTION

(a) Check the push-button start function:

(1) Get into the vehicle while carrying the electrical key transmitter sub-assembly with the power switch off. With the shift lever in P, check that the key indicator display is displayed when the brake pedal is depressed. Check that the hybrid control system starts when the power switch is pressed after the key indicator display is displayed on the multi-information display.

(2) While carrying the electrical key transmitter sub-assembly, check that the power source mode changes in the following order when the power switch is pressed with the brake pedal released: off → on (ACC) → on (IG) → off.

HINT:

If the power switch is pressed with the power switch on (IG) and the shift lever not in P, the power source mode will not change to off, but to on (ACC).

(3) With the shift lever in P, check that the steering lock operates when a door is opened.

(4) Check the push-button start function operation range for the front side. Place the electrical key transmitter sub-assembly at either inspection point so that it is facing the direction shown in the illustration, and then check that the hybrid control system can be started.

NOTICE:

Even if the electrical key transmitter sub-assembly is in a vehicle interior detection area, it may not be properly detected if it is on the instrument panel, in the glove box or on the floor.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 1 indoor electrical key antenna assembly (front floor).
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Perform this inspection for both inspection points.

*a	Inspection Point

(5) Check the push-button start function operation range for the rear side. Place the electrical key transmitter sub-assembly at either inspection point so that it is facing the direction shown in the illustration, and then check that the hybrid control system can be started.

NOTICE:

Even if the electrical key transmitter sub-assembly is in a vehicle interior detection area, it may not be properly detected if it is on the instrument panel, in the glove box or on the floor.

HINT:

Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the center of the No. 1 indoor electrical key antenna assembly (rear floor).
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Perform this inspection for both inspection points.

*a	Inspection Point

CHECK POWER SOURCE MODE CHANGING FUNCTION

(a) Check the power switch.

(1) Check that the power source mode changes according to the chart below.

Shift Position	Brake Pedal	Power Source Mode when Power Switch Pressed
P	Released	Off → on (ACC) → on (IG) → off
P	Released	On (READY) → off
P	Released	On (ACC)* → off
P	Depressed	Off → on (READY)
P	Depressed	On (ACC) → on (READY)
P	Depressed	On (IG) → on (READY)
P	Depressed	On (READY) → off
P	Depressed	On (ACC)* → off
Not P	Released	Off → on (ACC) → on (IG) (after power source mode changes to on (IG), power source mode changes between on (IG) and on (ACC) every time power switch is pressed)
Not P	Released	On (READY) → on (ACC)
Not P	Depressed	Off → on (IG)
Not P	Depressed	On (ACC) → on (IG)
Not P	Depressed	On (READY) → on (ACC)

HINT:

*: This situation is only applicable when the power source mode has changed from on (IG) to on (ACC).

CHECK TRANSMITTER BATTERY SAVING MODE FUNCTION

(a) Check the transmitter battery saving mode function:

(1) Press the unlock switch of the electrical key transmitter sub-assembly twice while pressing the lock switch and check that the electrical key transmitter sub-assembly LED blinks 4 times and enters transmitter battery saving mode.

(2) Check that the smart key system does not operate while in transmitter battery saving mode.

HINT:

To cancel transmitter battery saving mode, press a switch of the electrical key transmitter sub-assembly.

CHECK ENTRY CANCEL FUNCTION

(a) Disable the smart key system and check that all functions of the smart key system no longer operate.

Click here

HINT:

When the smart key system is disabled, it is possible to lock and unlock the doors with the wireless function, and the hybrid control system can be started by holding the electrical key transmitter sub-assembly near the power switch.

CHECK KEY DIAGNOSTIC MODE

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Parts Location

PARTS LOCATION

ILLUSTRATION

NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY

- IG2 NO. 1 RELAY

- ECU-IG2 NO. 2 FUSE

SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)

ILLUSTRATION

NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (FRONT FLOOR)

NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (REAR FLOOR)

FUSIBLE LINK BLOCK ASSEMBLY

- ECU-B NO. 3 FUSE

ILLUSTRATION

*A	for Toyota Entune Remote Connect Compatible Type	*B	w/ Wireless Charging System
*C	for Manual Tilt and Manual Telescopic Steering Column	*D	for Power Tilt and Power Telescopic Steering Column
*1	POWER SWITCH	*2	STOP LIGHT SWITCH ASSEMBLY
*3	STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)	*4	SHIFT LOCK CONTROL UNIT ASSEMBLY
*5	INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ACC RELAY - IG1-NO. 1 RELAY - IG1-NO. 2 RELAY - IG2-NO. 2 RELAY - ECU-B NO. 3 FUSE - ECU-ACC FUSE - ECU-DCC NO. 2 FUSE - ECU-IG1 NO. 1 FUSE - ECU-IG2 NO. 3 FUSE - STOP FUSE - STRG LOCK FUSE - WASHER FUSE	*6	COMBINATION METER ASSEMBLY
*7	MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)	*8	DCM (TELEMATICS TRANSCEIVER)
*9	CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)	*10	HYBRID VEHICLE CONTROL ECU
*11	SECURITY INDICATOR LIGHT	*12	MOBILE WIRELESS CHARGER CRADLE ASSEMBLY
*13	RADIO AND DISPLAY RECEIVER ASSEMBLY	*14	DLC3

New Key cannot be Registered

Power Source Mode does not Change to ON (ACC). Power Source Mode does not Change to ON (IG and ACC). Power Source Mode does not Change to ON (IG)

See More:

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