How to Replace a Lost Key for a 2006 Toyota Sienna

Replacing a lost key for a 2006 Toyota Sienna is fairly simple. You should have received at least two kinds of keys when you bought your car. Two master keys and a sub key. The master keys will work on every lock in the car, while the sub key will not work on the glove box.

Instructions

1. Determine whether your car has the engine immobilizer system (an anti-theft system) or not. Your keys will look differently depending on what system you have. Cars with the engine immobilizer system will have a thick black or gray cover near the top of the keys, while cars without this system will have keys with a gray cover near the top of one of the master keys and then two keys without any colored cover near the top.

2. Look at the key number plate that should be attached to one of your keys. The key number is what a Toyota dealer needs to make duplicate keys.

3. Visit a Toyota dealership. Using the key number, you can order new keys. If you have the engine immobilizer system, you must have at least one of the master keys to make a duplicate. If your 2006 Toyota Sienna has the engine immobilizer system and you make your own duplicate key, it will not work at starting the engine. A special built-in transponder chip is inserted in the key, and your dealer can make that. If you’ve lost all your master keys and you have the engine immobilizer system, then the whole system must be replaced. New keys cannot be made without replacing the system.

Tips & Warnings

• Keep one of your master keys in a safe place that isn’t in your car. Losing all your keys can be costly, so place one of the master keys in a spot that is safe and easy to find.

• Write down your key number and also keep that in a safe place that isn’t in your car. This number is essential for ordering replacement or duplicate keys.

References

• "2006 Toyota Sienna Owner's Manual"; 2006