This guide demonstrates how to perform an “All Keys Lost” procedure on a 2024 Toyota Tacoma with push-button start using the OBDSTAR. The process involves generating a new smart key, programming it via the vehicle’s smart box, and troubleshooting remote functionality.
Tools Required
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OBDSTAR X300 Classic G3/X300 DP Plus
- Toyota 30 PIN bypass cable
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Lonsdor KW100 (for key generation)
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Blank smart key. Here use Lonsdor LT20 smart key (compatible with Toyota’s proximity system)
Step-by-Step Process
1. Generating a New Smart Key
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Connect the Lonsdor KW100 to the Tacoma’s OBD port.
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Select “All Keys Lost” mode and place the blank key near the smart start button.
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Press the brake pedal to allow the system to read vehicle data.
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The device generates a new key based on the vehicle’s immobilizer information.
2. Accessing the Smart Box
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Locate the smart box (typically behind the dashboard or center console).
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Disconnect the factory wiring harness and connect the OBDSTAR Toyota 30 PIN bypass cable to read “immo data” (immobilizer data).
3. Reading & Writing Immobilizer Data
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Select Toyota > Tacoma (2024) > Proximity System in the OBDSTAR.
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Choose “Read Immo Data” to extract the necessary immobilizer information.
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Reconnect the original smart box harness before proceeding.
4. Generating a Simulator Key
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The OBDSTAR generates a temporary simulator key to bypass immobilizer checks.
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Test the simulator key—the vehicle should power on (though remote functions may not work yet).
5. Add smart key
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Turn ignition ON with the emulator key.
- Select immo data has been backed up and read pin code to program key.
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Wait for confirmation beeps (two beeps indicate success).
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Test the key.
