Here we will walk you through how to add a spare 4A smart key to Toyota Corolla 2020 using VVDI key tool plus without pin code.
Tools used:
Xhorse XD8ABAGL Toyota 8A AKL adapter
Original key
Procedure:
Step 1: Generate XM38 smart key
Generate remote under Corolla/Levin 2019+ KeylessGo ID4A option
Step 2:
Connect Toyota 8A AKL adapter with smart box.
Go to IMMO Programming-Toyota- select by type- Smart key after 2016- Type 5 (4A 2019-2022).
The smart key box is usually under the passage storage box or above the driver brake pedal.
Check connection diagram. Remove the plug on the smart box and replace it with the BA harness plug. The other two plugs on the smart box need to be retained.
Select Backup smart box eeprom data.
Read and back up eeprom data.
Select Add smart key function.
Turn the ignition on to the ON position.
Key tool plus will read the software number.
Turn off ignition. Turn on emergency indicators.
Select the backup eeprom data
Xhorse will detect key information. 2 keys have been registered and 2 more keys remaining to be registered.
Hit OK to continue.
Put the original smart key close to the Start button and take it away after the buzzer rings.
Close all the smart keys (original key and XM38 key) to be registered to the Start button in turn, each smart key close to the Start button, the buzzer rings twice, then remove the Start button.
Turn the ignition on to the ON position.
Put the programmed smart key close to the Start button and take it away after the buzzer rings.
Programming is completed.
Test the remote control.
Both key work fine.
Done.
