This post is for those locksmith who has the tool without Toyota all key lost function.
As same as Toyota Zelas 2011 model and Toyota previa, they all use EEPROM chip 93C46 in immo box and 93C86 in smart box, so the method to reset the file of Toyota highlander is same, refer to:
Step 1: Reset immo box. Disassemble immo box NO. 89784-0E020 which placed in a groove of the back of evaporator under the dash, open box and find the EEPROM chip 93C46 on the board, read the chip by key programmer like Yanhua key mater, VVDI prog etc. Save the data and backup. Modify the data like this:replace the bytes in blue area with 0, this area is the quantities of keys, reset is to make it to learn keys, zero means no key, need to learn new key. Red area is the data synchronizes with engine, retain. Other bytes all replace with F. Save the data and write it back to chip 93C46.
Step 2: Reset smart box. Disassemble smart box No. 89990-0E020 placed near A-pillar behind glove compartment. Open the box and find the EEPROM chip 93C86 on electronic board. Read the chip with key programmer. Save data and backup. Modify the data like this: retain Blue area, other bytes all replace with F. Save the data and write it back to chip 93C86.
Step 3: add the key. Assemble immo box and smart box back to car. Connect universal key programmer with car OBD, Push START Button of car, run the key programmer and select smart system, follow the steps to make the logo of key fob held close to START button, comes with “beep beep”, that is match successfully. Then start the car, generally no need to do synchronization process.
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