Toyota Mark x 2013 all smart key lost immo and smart box reset reprograming guide

The same as Camry new model, Mark x 2013 model also ingegrated immo box into steering lock. Once all key lost, we need to disassemble steering lock and smart box to reset EEPROM to virgin first, then add keys. Follow below steps:


Step 1: Reset immo data. Disassemble the steering lock from the car, then open the lock and find the 8-pin EEPROM chip 93C46, read the chip with key programmer such as Yanhua key master, vvdi prog and CG100 etc. Save the data and backup. Modify the data like this: retain the first and second bytes of row 020, usually shown 5555, Other bytes all replace with FFFF, save the file and write the file back to EEPROM chip. Assemble the steering lock to car.



Step 2: Reset smart box. Disassemble smart box NO. 89990-0P020 which located On the right side behind the passenger’s glove box, open and find the EEPROM chip 93C86, read the chip with key programmer, save file and backup, start modify the data like this: retain the bytes in red area, other bytes all replace with F, then this data back to virgin, save and write back to chip 93C86. Assemble box back to car.



Step 3: Learn the key. With steering lock and smart box assemble back to car, go to car and push start button, the dash will be lighted meaning everything going well. Connect key programmer with car, select Toyota smart system, following the steps, make the smart key logo held close the start button, two “beep” will be heard, that is the indication of adding key successful.

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