I don't know why they freeze, exactly, but here at 9,000 feet I've found the best solution is to spray all around the door with silicone spray. just hit every possible point of contact between the door and the frame. works pretty well
The 2004 Toyota Sienna has 24 valves.
The 2004 Toyota Sienna has a V6 engine.
The 2004 Toyota Sienna is a gas-powered vehicle.
The 2004 Toyota Sienna has a 5-speed automatic.
The curb weight of the 2004 Toyota Sienna is 4120 lbs..
The 2004 Toyota Sienna is 16 ft. 8 in. (200 in.) long.
The 2004 Toyota Sienna has a 19.3 degrees angle of departure.
The 2004 Toyota Sienna has double overhead cam (DOHC).
The 2004 Toyota Sienna's turning circle is 36.8 ft..
The height of the 2004 Toyota Sienna is 5 ft. 8.9 in. (68.9 in.).
The 2004 Toyota Sienna has a drag coefficient of 0.30 Cd.
The 2004 Toyota Sienna has a 13.3 degrees angle of approach.