It's behind the glovebox. Push in the sides of the glovebox when it is opened and it pulls right out.
If it even has a cabin air filter, it is likely to be up behind the glove compartment, under the dash on the passenger's side.
Cabin filter located behind glove box
The 2006 Toyota Sienna has a V6 engine.
The 2006 Toyota Sienna has 24 valves.
Behind the glove box.
Toyota Siennas produced from the model years 2004-2006 have a fuel filter that's integrated with the in-tank fuel pump. The filter does not require periodic replacement.
The 2006 Toyota Sienna is a gas-powered vehicle.
The 2006 Toyota Sienna has a 5-speed automatic.
The 2006 Toyota Sienna has double overhead cam (DOHC).
The 2006 Toyota Sienna has a 19.3 degrees angle of departure.
The maximum payload of the 2006 Toyota Sienna is 1550 lbs..
The 2006 Toyota Sienna's turning circle is 36.8 ft..