It is on the brake pedal lever. If you go to Toyota Dealer and buy one (it is just piece of rubber ) it will be evident how it just pops in place in the little hole on the brake pedal lever It is to keep the brake light switch off until the brakes are applied, you possibly have brake lights on all the time yes?
Thanks for your response. I have tried to locate the hole on the brake pedal but can't find it. Maybe when the old cushion broke off the tab stayed in the hole so it feels smooth. Do you have a diagram or picture that show where the hole is located so I can check a specific area? Thanks