This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
The front window defroster and heater controller potentiometer assembly is defective. Ice build-up on the front window is known to impair a driver's visibility and cause an accident. The nut on my temperature controller was several turns loose! the original multi-stranded wires soldered to the temp-controller potentiometer were rigid because they were too well tinned with solder and broke from vibration fatigue; due to the loose nut on the temp-controller potentiometer shaft. Toyota or sumitomo (vendor) should cover this under an extended warranty due to the loose nuts (poor workmanship)! the problem is well documented with photos at "www.devalcourt.com/2010/03/fixing-2004-Toyota-highlander-ac-and-heat-issue/#idc-cover". over 385 people have left comments there; several other websites document the same problem.
- Cincinnati, OH, USA
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- Cincinnati, OH, USA