2023-2025 Toyota Smart Key Immobilizer Reset and Key Management TSB

Toyota Technical Service Bulletin (TSB) T-SB-0013-24, issued on March 4, 2024, outlines the comprehensive procedures for managing the Smart Key Immobilizer system in a wide range of 2023-2025 Toyota vehicles. This bulletin, which supersedes Service Bulletin No. T-SB-0064-18, addresses situations where vehicle owners have lost all their smart keys, need to add new keys, or require the permanent removal of lost or stolen keys from the vehicle's memory. The TSB emphasizes the security-sensitive nature of these operations and details the steps technicians must follow using specialized diagnostic equipment.

Symptoms

Owners of affected Toyota vehicles may encounter the need for these procedures under specific circumstances:

• Lost ALL Keys: This is the most critical scenario, where all master keys for the vehicle have been lost, rendering the vehicle inoperable without a new key programming. This situation necessitates a full Toyota Smart Key Immobilizer Reset.
• Add NEW Keys to Vehicle: After an immobilizer reset, or simply when an owner wishes to have additional working smart keys for their vehicle.
• Key(s) is (are) Lost or Stolen and/or Request to Remove ANY Key NOT Present From the Vehicle: This scenario requires removing specific keys from the vehicle's system to prevent unauthorized access, without affecting the keys that are still in the owner's possession.

Important Warnings

Toyota has issued several critical warnings within T-SB-0013-24 that technicians and owners should be aware of:

• "When performing a Smart Code Reset, ALL registered keys are erased and CANNOT be used again on ANY vehicle." This highlights the irreversible nature of the immobilizer reset.
• "For Undesignated Key Permanent Erasure utility, ONLY the keys that are NOT present will be removed. ANY keys that are NOT present can never be reused." This ensures that only the intended keys are removed from the system.
• "If ALL keys are lost, refer to the applicable Repair Manual and follow the process for establishing communication. It may also be necessary to maintain communication during the entire procedure by actions such as pushing the doorjamb courtesy switch or flashing the high beams. Do NOT cycle the engine switch to keep the ECU awake." This provides crucial guidance for maintaining vehicle communication during critical procedures.
• "If the battery is low of charge, attaching a battery charger may be necessary to maintain battery voltage during Immobilizer Reset." Consistent power is vital for successful programming.
• "The battery diagnostic tool MUST be used in Power Supply Mode to maintain battery voltage at 13.5V while flash reprogramming the vehicle." This specifies the exact requirement for battery support.
• "Do NOT resubmit another approval for this vehicle if the file from management has been received in TIS and it shows the approval status for the given VIN." This prevents unnecessary re-submissions.
• "Open the approval file and enter a NEW seed number to get the unique passcode for each attempt." Each attempt requires a fresh passcode.
• "AFTER selecting Next, another passcode will be requested." This indicates a multi-step passcode generation process.
• "If adding keys AFTER performing an immobilizer reset, multiple keys can be added at a time. The vehicle will beep once each time a NEW key is registered. Repeat this step until ALL NEW keys are registered." This clarifies the process for adding multiple keys.
• "Make sure ALL keys to be reused are present." This is a prerequisite for the Undesignated Key Permanent Erasure to avoid unintended key deletions.
• "The keys that are NOT present in this procedure will be permanently erased from the vehicle. Erased keys will NOT be functional on this, or ANY vehicle." This reiterates the permanent consequence of the erasure.
• "The keys that have not been touched to the Engine switch will be deleted and can never be re-used. Those keys can never be re-registered." This emphasizes the importance of touching all desired keys during the erasure process.
• "There is a 30-second timer for this procedure." This indicates a time-sensitive step during key erasure.
• "The keys that were NOT touched to the ignition will no longer work on ANY vehicle." This confirms the outcome of the permanent erasure.

Repair Procedure Summary

The TSB details three main procedures, all requiring access to Toyota's Technical Information System (TIS) and GTS+ diagnostic software:

1. Smart Key Immobilizer Reset

This procedure is performed when all master keys are lost. It ensures that the vehicle's immobilizer system is reset, allowing new keys to be programmed. The process involves:

• Security Authorization: Technicians must log into TIS and navigate to the Immobilizer Reset section. A secondary approval from dealer management is required for each reset, involving a detailed request and approval process via the TIS inbox. This ensures strict security protocols are followed.
• Passcode Generation: Once approval is granted, the technician obtains a unique seed number from the GTS+ software connected to the vehicle. This seed number is then used in TIS to generate a passcode, which is entered back into GTS+.
• Reset Execution: After confirming the driver's door is open and acknowledging warnings (such as " When this function is performed, all the registered keys will become obsolete and can never be reused."), the GTS+ system performs the immobilizer reset, which can take approximately 16 minutes. This prepares the vehicle for new key registration.

2. Smart Code Registration

After a Toyota Smart Key Immobilizer Reset or when adding new keys, the Smart Code Registration procedure is used to program new smart keys to the vehicle. Key steps include:

• Accessing Utility: The technician selects "Smart Code Registration" in GTS+.
• Passcode Retrieval: Similar to the immobilizer reset, a seed number is generated from GTS+ and used in TIS to obtain a passcode. This passcode is then entered into GTS+.
• Key Programming: The technician places the new unregistered key(s) outside the vehicle, then brings the registered key (if any) into the vehicle and touches it to the ignition switch. The system then guides the technician to touch each new key to the ignition switch. The vehicle will beep twice to confirm each successful key registration. It's important to note that "If adding keys AFTER performing an immobilizer reset, multiple keys can be added at a time. The vehicle will beep once each time a NEW key is registered. Repeat this step until ALL NEW keys are registered."
• Function Check: After registration, all keys are function-checked to ensure they can lock/unlock the vehicle and start the engine.

3. Undesignated Key Permanent Erasure

This procedure is used to permanently remove lost or stolen keys from the vehicle's memory without affecting the keys that are currently present. This ensures that any lost or stolen keys cannot be used to access or start the vehicle. The process involves:

• Selecting Utility: The technician selects "Undesignated Key Permanent Erasure" in GTS+.
• Warning Acknowledgment: The technician must acknowledge warnings such as "The keys that are NOT present in this procedure will be permanently erased from the vehicle. Erased keys will NOT be functional on this, or ANY vehicle."
• Key Confirmation: The technician inputs the number of customer keys present. During a timed 30-second window, all keys that are to be kept must be touched to the ignition switch. "The keys that have not been touched to the Engine switch will be deleted and can never be re-used. Those keys can never be re-registered."
• Passcode and Erasure: A passcode is generated via TIS/GTS+ and entered. The system then performs the permanent erasure of any keys that were not touched during the timed procedure. "The keys that were NOT touched to the ignition will no longer work on ANY vehicle."

Required Tools or Parts

Performing these procedures requires specific tools and software:

• Battery Diagnostic Tool: DCA-8000P T (Essential SST) – Used to maintain battery voltage at 13.5V during programming.
• Techstream ADVi: TSADVUNIT
• Techstream 2.0: TS2UNIT
• Techstream Lite: TSLITEPDLR01
• Techstream Lite (Green Cable): TSLP2DLR01
• GTS+ Software: Version 2024.04.004.02 or later is required.

Only one of the Techstream units listed above is required. Additional Techstream units can be ordered via Approved Dealer Equipment (ADE).

Owner Action

If you find yourself in a situation where you've lost all your smart keys, need to add new ones, or have had keys lost or stolen for your 2023-2025 Toyota vehicle, it is crucial to contact an authorized Toyota dealer. These procedures, including the Toyota Smart Key Immobilizer Reset, are highly secure and require specialized diagnostic equipment and access to Toyota's proprietary systems (TIS and GTS+). Attempting to perform these actions without the proper tools and authorization can compromise your vehicle's security and may lead to further issues. Your dealer has the trained technicians and necessary resources to perform these operations correctly and securely.

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NHTSA ID: 11015495