We offer this 2001-2007 Toyota Highlander digital automatic climate control repair service. Common issues with this Toyota auto climate control are unresponsive knobs, fan speed that is difficult to adjust or control, and stuck temperature, or difficult to adjust the temperature.
The 2001 – 2007 Toyota Highlander was equipped with either an automatic climate control or manual climate control. Both units suffered the same issues of temperature knob inconsistencies and irregularities. You might even have a loose knob which is also a common symptom that leads to larger problems. The climate control changes the temperature and redirects air to various passenger and driver side vents. Toyota vehicles typically don't have problems where air delivery is the concern.
The main issues with this Highlander climate control are the knob problems and are widely discussed and documented on various forums across the internet. Used, complete climate control units are difficult to find and new units are available from Toyota at around $1300 each. Your best and most cost effective solution is to send it in to Tanin Auto Electronix to repair.