Toyota Cressida was made in Japan and sold in the States until 1992. In Japan the Cressida is known as Toyota Mark II. Although rear wheel drive and mid size, the Cressida was replaced by the front wheel drive full size Avalon. Manufactured in Georgetown, Kentucky from 1994 until the present, Avalon is a V6 4 door sedan. The Avalon offers comfort and plenty of driver and passenger head and legroom. As of 2017, approximately 1,400,000 units have been sold in the United States.

(1995-1997) Avalon has a non-transponder keyed ignition (Ilco part number X217/TR47), (the substitute is Ilco part number X225/B80). The key code series is 10001-15000.

(1998-2004) is equipped with a transponder keyed ignition (Ilco part number TOY43AT4, 4C Chip), (Ilco service key part number is X217/TR47). Additional transponder keys can be programmed using the Silca RW4 Plus cloning system or on board programming. A working master key is needed for both procedures. The on board programming procedure is as follows: Step 1. Press and release the gas and brake once. Step 2. Put a working master key into the ignition. Step 3. Press and release the gas five times. This step must be completed in 15 seconds. Step 4. Press and release the brake six times and take out the key. This step must be completed in 20 seconds. Step 5. In 10 seconds or less put the key you are programming into the ignition. Step 6. Press and release the gas once. This step must be completed in 10 seconds.  Step 7. The security light will go out after blinking 80 times. This indicates the new key is now programmed. Step 8. To exit programming mode, remove the key and press and release the brake once.

Keys cannot be programmed for 1998-2004 Avalon with a diagnostic. If a working master key is not available the Electronic Control Module has to be replaced. The key code series is 10001-15000.

(2005-2012) with Toyota (Type 2 or Type 4) keyed ignition system. The non-high security transponder key used is (Ilco part number TOY44D-PT, 4D Chip or TOY44G-PT, G Chip). The service key is (Ilco X217/TR47). The key code series is 10001-15000. A diagnostic tool, cloning, or on board programming can be used to program additional keys. If all keys are lost the immobilizer must be reset.

(2005-2012) with Toyota (PROX 2 or 4) Push to Start ignition system. Smart Proximity Key Fob is used.

(2013-2018) with Toyota (PROX 6) Push to Start ignition system. Smart Proximity Key Fob is used.

(2019)

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