- A registration request was sent while in another mode.
- During registration a different registration request was sent.
| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001G22H |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 08/2020] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): New Key cannot be Registered; 2019 - 2020 MY RAV4 [11/2018 - 08/2020] | ||
|
New Key cannot be Registered |
DESCRIPTION
If a new electrical key transmitter sub-assembly could not be registered, wave interference or a malfunction of the certification ECU (smart key ECU assembly), electrical key transmitter sub-assembly, ID code box (immobiliser code ECU)*, steering lock ECU (steering lock actuator with ECU assembly) or door control receiver assembly is suspected.
The registration procedure to add another electrical key transmitter sub-assembly (without replacing any parts) is called "additional key ID registration".
If additional registration is not possible, refer to Additional Key cannot be Registered.
Click here
![2019 - 2021 MY RAV4 [11/2018 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): Additional Key cannot be Registered](/t3Portal/stylegraphics/info.gif)
- *: w/o Occupant Classification System
HINT:
If any of the following have been performed, registration of all electrical key transmitter sub-assemblies is necessary:
- The certification ECU (smart key ECU assembly) has been replaced.
- The certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) have been replaced.*
-
The certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator with ECU assembly) have been replaced.*
- *: w/o Occupant Classification System
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the engine 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) 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) after confirming that the communication systems are functioning properly.
Click here
-
Before replacing the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly), steering lock ECU (steering lock actuator with ECU assembly) or ID code box (immobiliser code ECU)*, refer to the Registration.
Click here
-
If registration of an electrical key transmitter sub-assembly cannot be performed, refer to the Registration.
Click here
- New registration mode can be entered only when no electrical key transmitter sub-assemblies are stored in the certification ECU (smart key ECU assembly).
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
- *: w/o Occupant Classification System
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.
(e) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
NOTICE:
If a malfunction occurs, do not remove/install the vehicle battery before checking for DTCs.
OK:
DTCs are not output.
| NG |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART
|
|
|
2. |
READ VALUE USING TECHSTREAM (NUMBER OF REGISTERED KEY CODES) |
(a) Enter the following menus: Body Electrical / Smart Key / Data List.
(b) Read the Data List according to the display on the Techstream.
HINT:
A new certification ECU (smart key ECU assembly) will have no registered electrical key transmitter sub-assemblies.
Body Electrical > Smart Key > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Number of Registered Key Codes |
Number of registered electrical key transmitter sub-assemblies |
0 to 8 |
Number of registered electrical key transmitter sub-assemblies |
Up to 7 electrical key transmitter sub-assemblies can be registered |
Body Electrical > Smart Key > Data List
|
Tester Display |
|---|
|
Number of Registered Key Codes |
OK:
"0" is displayed on the Techstream display.
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|
3. |
READ VALUE USING TECHSTREAM (OPERATION HISTORY LIST) |
(a) Enter the following menus: Body Electrical / Smart Key / Utility / Operation History / Certification ECU operation log of ID code registration.
Body Electrical > Smart Key > Utility
|
Tester Display |
|---|
|
Operation History |
Certification ECU operation log of ID code registration:
|
Parameter Name |
Detection Condition |
Trouble Area |
Proceed to |
|---|---|---|---|
|
Failed Registration Mode |
|
Certification ECU (smart key ECU assembly) |
A |
|
Vehicle ID not set |
A vehicle ID has not been registered in the certification ECU (smart key ECU assembly). |
Certification ECU (smart key ECU assembly) |
B |
|
Key Registration Max |
A registration request was sent when the maximum number of electrical key transmitter sub-assemblies has already been registered. |
w/ Occupant Classification System:
|
B |
w/o Occupant Classification System:
|
C |
||
w/o Occupant Classification System:
|
A registration request was sent even though the existence of an ID code box is unknown. |
|
D |
|
Vehicle Speed Too High (This applies only when registration fails even though the vehicle is stationary. Make sure that the vehicle is stationary first.) |
A registration request was sent with a vehicle speed of 5 km/h (3 mph) or more. |
Certification ECU (smart key ECU assembly) |
E |
|
No ECU Response |
The steering lock ECU (steering lock actuator with ECU assembly) was not connected. |
w/ Occupant Classification System:
w/o Occupant Classification System:
|
F |
|
L Code Verification Error |
w/ Occupant Classification System:
|
w/ Occupant Classification System:
|
G |
w/o Occupant Classification System:
|
w/o Occupant Classification System:
|
H |
|
w/o Occupant Classification System:
|
L code verification was successful but the S code stored in the ID code box (immobiliser code ECU) and certification ECU (smart key ECU assembly) did not match. |
|
C |
|
Key Verification: Max Number |
w/ Occupant Classification System:
|
Certification ECU (smart key ECU assembly) |
B |
w/o Occupant Classification System:
|
ID code box (immobiliser code ECU) |
I |
|
|
Key Verification: Amp Abnormal |
Malfunction of the immobiliser amplifier, such as a short to ground. |
|
J |
|
Key Verification: Read Error |
Although a registered electrical key transmitter sub-assembly was held near the engine switch, immobiliser function certification was not successful. |
|
K |
|
Unverified Key |
Although all of the registered electrical key transmitter sub-assemblies had been held near the engine switch, electrical key transmitter sub-assembly registration was not possible due to immobiliser function certification not being successful. |
|
L |
|
Transponder Key Amp Error |
Malfunction of the immobiliser amplifier, such as a short to ground. |
|
J |
|
New Key Registration Error |
Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration was not possible due to immobiliser function certification not being successful. |
|
M |
|
New Key Vehicle ID Error |
Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration was not possible due to the vehicle ID not being stored successfully. |
|
M |
|
New Key Registration Failed |
After successful immobiliser function certification, time expired before smart recognition completion confirmation or a registration cancellation request was sent. |
|
M |
|
New Key Already Registered |
Although a registered electrical key transmitter sub-assembly was held near the engine switch, time expired or a registration cancellation request was sent. |
Certification ECU (smart key ECU assembly) |
N |
|
New Key ID Code Error |
Electrical key transmitter sub-assembly registration was not possible due to the certification ECU (smart key ECU assembly) not being able to store the information of the electrical key transmitter sub-assembly to EEPROM correctly. |
Certification ECU (smart key ECU assembly) |
B |
|
No Response Registering L/S Code |
w/ Occupant Classification System:
w/o Occupant Classification System:
|
w/ Occupant Classification System:
w/o Occupant Classification System:
|
F |
w/o Occupant Classification System:
|
The S code could not be stored by the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU). |
|
C |
|
L Code Verification NG |
w/ Occupant Classification System:
|
w/ Occupant Classification System:
|
G |
w/o Occupant Classification System:
|
w/o Occupant Classification System:
|
H |
|
w/o Occupant Classification System:
|
The code received from the ID code box (immobiliser code ECU) when the S code is registered does not match the code of the certification ECU (smart key ECU assembly). |
|
C |
|
Key Number Write Error |
The certification ECU (smart key ECU assembly) could not store the number of electrical key transmitter sub-assemblies to EEPROM. |
Certification ECU (smart key ECU assembly) |
B |
|
ID Code BOX Write Error |
The certification ECU (smart key ECU assembly) could not store the information of whether the ID code box was provided in the vehicle to EEPROM. |
Certification ECU (smart key ECU assembly) |
B |
|
New Key ID Registration Stopped (Security Access Malfunction) |
Communication error |
Communication error between the Techstream and key registration server |
O |
|
New Key ID Registration Stopped (Certification ECU Type Malfunction) |
The electrical key transmitter sub-assembly is not compatible with the certification ECU (smart key ECU assembly). |
Certification ECU (smart key ECU assembly) |
B |
|
New Key ID Registration Stopped (Key Type Malfunction) |
The electrical key transmitter sub-assembly is not compatible with the registration mode or certification ECU (smart key ECU assembly). |
Electrical key transmitter sub-assembly |
P |
| B |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| C |
|
| D |
|
| E |
|
| F |
|
| G |
|
| H |
|
| I |
|
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
|
| J |
|
CHECK FOR DTC B278A or B2784
|
| K |
|
| L |
|
| M |
|
| N |
|
NEW KEY REGISTRATION FAILED, CHECK THE KEY (a) Check if a registered electrical key transmitter sub-assembly was held near the engine switch instead of an unregistered electrical key transmitter sub-assembly by mistake. (b) Perform registration again using an unregistered electrical key transmitter sub-assembly. If the same problem occurs again, replace the certification ECU (smart key ECU assembly). |
| O |
|
RETRY THE REGISTRATION PROCEDURE |
| P |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
|
|
4. |
CHECK REGISTRATION MODE |
(a) Make sure that another mode or different registration mode is not selected.
OK:
Another mode or a different registration mode is not selected.
HINT:
If any mode has been selected, it is necessary to cancel the mode.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
PERFORM REREGISTRATION |
|
5. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
HINT:
Refer to Registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
|
|
6. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) |
(a) Enter the following menus: Body Electrical / Combination Meter / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Combination Meter > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Vehicle Speed Meter |
Vehicle speed |
Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph) |
Almost same as actual vehicle speed |
- |
Body Electrical > Combination Meter > Data List
|
Tester Display |
|---|
|
Vehicle Speed Meter |
OK:
"0 km/h (0 mph)" is displayed when the vehicle is stationary.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
|
7. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
HINT:
Refer to Registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY) |
|
8. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
HINT:
Refer to Registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
|
|
9. |
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY) |
(a) Temporarily replace the steering lock ECU (steering lock actuator with ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new steering lock ECU (steering lock actuator with ECU assembly) successfully.
| OK |
|
END (STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
|
|
10. |
CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
(a) Make sure that a registered electrical key transmitter sub-assembly is being used.
OK:
A registered electrical key transmitter sub-assembly is being used.
| NG |
|
USE A REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY AND PERFORM REREGISTRATION |
|
|
11. |
CHECK NUMBER OF REGISTERED ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLIES |
(a) Check the number of registered electrical key transmitter sub-assemblies.
|
Result |
Proceed to |
|---|---|
|
Only one electrical key transmitter sub-assembly is registered |
A |
|
2 or more electrical key transmitter sub-assemblies are registered |
B |
| A |
|
|
|
12. |
REREGISTRATION |
(a) Reregister the electrical key transmitter sub-assemblies using different order combinations.
HINT:
-
Refer to Registration.
Click here
- If there are 2 or more electrical key transmitter sub-assemblies, make sure that the number of order combinations is the same as the number of electrical key transmitter sub-assemblies so that each transmitter can be checked first.
Example: When there are 3 registered electrical key transmitter sub-assemblies (A, B and C).
|
Combination |
Order* |
|---|---|
|
1 |
A → B → C |
|
2 |
B → C→ A |
|
3 |
C → A → B |
- *: Except for the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.
OK:
"Key Verification: Read Error" is not displayed.
| OK |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE) |
|
|
13. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Temporarily replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
HINT:
Refer to Registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
| OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
| NG |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
|
14. |
CHECK FOR ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY |
(a) Check that all registered electrical key transmitter sub-assemblies are available.
OK:
No registered electrical key transmitter sub-assemblies are missing.
| NG |
|
ERASE ALL REGISTERED ELECTRICAL KEY TRANSMITTERS EXCEPT ONE, THEN REGISTER THE REMAINING ELECTRICAL KEY TRANSMITTERS |
|
|
15. |
REREGISTRATION |
(a) Register the electrical key transmitter sub-assemblies using different order combinations.
HINT:
-
Refer to Registration.
Click here
- If there are 2 or more electrical key transmitter sub-assemblies, make sure that the number of order combinations is the same as the number of electrical key transmitter sub-assemblies so that each transmitter can be checked first.
Example: When there are 3 registered electrical key transmitter sub-assemblies (A, B and C).
|
Combination |
Order* |
|---|---|
|
1 |
A → B → C |
|
2 |
B → C → A |
|
3 |
C → A → B |
- *: Except for the first electrical key transmitter sub-assembly, the remaining electrical key transmitter sub-assemblies can be checked in any order.
OK:
"Key Verification: Read Error" is not displayed.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY HELD WHEN "Key Verification: Read Error" WAS DETECTED WAS DEFECTIVE) |
|
16. |
REREGISTRATION |
(a) Using an unregistered electrical key transmitter sub-assembly, register the ID.
HINT:
Refer to Registration.
Click here
OK:
The key ID can be registered.
| OK |
|
END (ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS DEFECTIVE) |
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|