REPLACEMENT AIR DOOR ACTUATOR - controls the temperature of air flowing into the interior of the vehicle. This part commonly fails on popular ES300h, ES350, RX350, Avalon, Camry, Highlander, Sienna, and Venza models. It usually produces a clicking or popping sound during operation when faulty, which results in incorrect A/C or heater temperatures inside the vehicle. | COMPATIBLE REPLACEMENT FOR LEXUS AND TOYOTA VEHICLES - 2016 ES300h | 2016-2018 ES350 | 2010-2015 RX350 | 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Avalon | 2007-2017 Camry | 2010-2016 Highlander | 2011-2016 Sienna | 2009-2016 Venza |. If the blend door actuator fails, the air conditioning and heating systems may not function properly, resulting in uncomfortable temperatures in your car. | REPLACES PART NUMBERS - 604-906, 604906, 604 906, 87106-07120, 8710607120, 87106 07120 commonly found on popular Sienna models with years 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18. If you are unable to change the temperature of the air inside your vehicle, then you may have a problem with your AC blend door actuator. | OEM FIT, QUALITY & FINISH - While this is not a genuine OEM part, it is a direct replacement and will fit and work exactly like the factory part. This replacement air temperature door actuator, manufactured by AA Ignition, features a redesigned housing and a rugged circuit board to ensure it lasts longer than your factory part. | LIFETIME WARRANTY - The blend door actuator comes complete with a lifetime warranty. If the part ever fails on your ES300h, ES350, RX350, Avalon, Camry, Highlander, Sienna, or Venza vehicle, simply contact us for a free replacement. Save time and money by purchasing this part and replacing it yourself.