First off do you have an immobiliser in your 2006 RAV4 Sport ? You should see the word "Security" LED light below the radio which will blink when the car is not running. If you don't have an immobiliser then the wireless control on the FOB is the only thing you need to program (if you want that type of key). If you have no Security LED then you have no immobiliser. You can use use a regular key to start or open the car.
The original fob keys are usually the master keys. The original valet key is usually the secondary key. (this key has no wireless function) Note a valet key can be programmed as a master key. A fob key can be programmed as a secondary key.
There is a way to really tell if a key is a master key or secondary key:
1. Locate / identify the "Security" light - it should be blinking all the time when no key is in the ignition.
2. Watch the Security light as you insert a key into the ignition. One of 3 things will happen:
a) light continues blinking - unrecognized key
b) light stays on 1-3 seconds before going off = valet key
c) light goes off immediately or does not blink again = master key
According to this thread only certain models have an immobiliser :2006 RAV4 Spare Key
All RAV4 for Canadian market have an immobiliser 2006-2012
2006-2008 immobiliser for LTD models (for US market)
2009 -2012 immobiliser standard on all models (for US market)
So according to above info Sparky52, if your 2006 Sport is not a Canadian model you should have no immobiliser.
As to programming the key without Techstream someone who has experience doing so can answer this.
I found some instructions you may try: http://fdo-workspace.blogspot.com/20...-for-2006.html