Here is a step-by-step guide on how to use MUT-3 diagnostic software to register a new key for Mitsubishi Lancer 2008.
Connect MUT-3 interface between Mitsubishi Lancer OBD port and PC,then run MUT-III SE software.
After vehicle communication build,it will show you with the vehicle information as below
Now you need select “KOS/IMMO/Keyless/TPMS” from System list,then click “OK” button
Then click “Special Function”–>”Key Registration”
Execute the key Registration
Input the password,and press “OK” button
Mitsubishi Key programming/registration completed.
If you need to register additional keys,insert additional key,turn IG on and press OK button within 30 seconds.
If you only want to register only one key,click “No” button and test you need key.