Additional Master Key Registration

WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

It is possible to register up to 7 master key codes including the already registered key code.
When any operation time described below is over, registration mode completes.
When the next procedure is performed while the timer is working, the timer completes counting time, then the next timer starts.
When replacing the Ignition Cylinder Key Set or Lock Cylinder Set, register according to the following procedure using the original master key. However, after the registration of the additional master key, the original master key and the original sub-key are not necessary any more, so erase the registration of those key codes.

There are 2 ways for registration of an additional master key:

Depressing Brake and Acceleration Pedals

Refer to the flowchart, see Fig 1.

Using Hand-Held Tester

Refer to the flowchart, see Fig 2.

Fig 1: Identifying Additional Master Key Registration Flowchart (Using Brake & Accelerator Pedal)

Fig 2: Identifying Additional Master Key Registration Flowchart (Using Hand-Held Tester)