Lexus ES200 8A-B8 Smart Key Programming via KEYDIY KD-X6

This tutorial demonstrates how to add a smart key to a Lexus ES200 8A-B8 system using KEYDIY KD-X6 programmer. The same method applies to All Keys Lost situations.

Required Tools

• KEYDIY KD-X6 Main Unit
• OBD Function Extension Cable & Main OBD Cable, FT30P CAN Adapter Cable (All are in KD-X6 Package)
• KEYDIY TIB42-4 Universal Smart Key (with battery installed)
• Original Vehicle Key (OEM Key)

Step 1: Detect OEM Key & Generate Universal Key

1. Connect the OBD extension cable to KD-X6, attach the main OBD cable, and plug it into the vehicle OBD port.

2. Go to Remote Function > Smart Match > Smart Match(Toyota 4D8A).

3. Place the OEM key in the KD-X6 sensing area. Press the Unlock button twice when prompted.

4. The screen will identify the key as Lexus B8 (433.58 / 434.42 MHz).
5. Place the TIB universal key in the sensing area, select the detected chip, and tap Generate (Wireless). Press any button on the new key to complete generation.

Step 2: Back Up Smartbox EEPROM Data

1. Remove the lower trim cover on the passenger side to access the Smartbox connector.
2. Unplug the original vehicle connector, plug in the FT30P CAN adapter cable inline, and connect the adapter cable to the OBD extension cable.

3. On the menu of KD-X6key programmer, navigate to Immo Programming > Lexus > Smart Key System > 8A Page 4 B6/HB9/BA.
4. Tap Backup EPROM Data for Smart Box.

5. Cycle the ignition ON and OFF once, turn the hazard lights ON and OFF once, then confirm on screen.
6. Save the EEPROM file to your device storage.

Step 3: Program the New Key

1. Tap Add Prox Keys.
2. Turn the ignition ON (dashboard lights illuminated).
3. Choose the option to bypass the PIN code using the backed-up EEPROM file, then select the saved file.

4. Hold the original OEM key close to the Start button. Remove it after one beep.
5. Hold the new KEYDIY TIB universal key close to the Start button. Remove it after two beeps.

6. The screen will display “Learningcomplete”.

Step 4: System Restoration & Testing

1. Unplug FT30P CAN adapter cable and reconnect the original vehicle connector under the passenger dash.
2. Test the new key: check remote lock/unlock functions and engine keyless start.

www.uobdii.com