Two problems related to headlights have been reported for the 2015 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Toyota Sienna based on all problems reported for the 2015 Sienna.
The dashboard speedometer and tachometer gauges cannot be illuminated without turning on parking or headlights. These gauges cannot be seen during the day when the dashboard is shadowed. Issue has been reported on Sienna chat boards and numerous Toyota service departments.
In daylight, when headlights are off or automatic, the speedometer does not illuminate. With headlights on, illumination is very faint at its maximum setting. The display is so dark that it cannot be reliably read. With sunglasses, it is impossible to read the speedometer. Note, this is an analog speedometer, and this model does not have an additional digital speed display. An internet search indicates that this problem is universal for this model/year (not a defect in my vehicle). It creates a hazard because one cannot easily determine speed. (at night there is no problem, since the dashboard lighting is sufficient in those conditions. ).
| Exterior Lighting problems | |
| Headlights problems |