Toyota Sienna owners have reported 101 exterior lighting related problems since 1996. Table 1 shows the 10 most common exterior lighting problems. The number one most common problem is related to the vehicle's headlights (46 problems). The second most common problem is related to the vehicle's exterior lighting (40 problems). For details of each of the problem category, use the links in the table.
The headlight bulb compartment allows water to leak into it on the passenger side causing the bulb to blow. This has happened twice, the repair cost was $500. We drove the car for one week and the bulb blew again because water leaked into the compartment. Read details...
The wiring harness connector for both lights has had water accumulate in the connector which causes the rear tail lights to fail. Both of my tail lights have failed, and the cause was corrosion inside the wiring harness connector. Read details...
Abs, vsc, trac off, brake lights on continuously, plus tire pressure light blinking. This is not normal and also annoying. Toyota doesn't seem to know what the problem is, and is only willing to allow me to spend thousands of dollars to "try" to fix this. Read details...
The vehicle engine stalls. This occurs intermittently especially when making turns. I had to press the gas pedal all the way down to accelerate. The vehicle brake lights do not come off for about 10 minutes when the engine and lights have been switched off. Read details...
A/c went out April 2012. Blows hot air. According to online forums this happens a lot in Sienna's - 2004 to 2006 models. We have 5 children in the vehicle and cannot take them very far even with the windows down or they could possibly get heatstroke. Read details...