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.

- East Falmouth, MA, USA

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.)

- Fanwood, NJ, USA

The speedometer & tachometer on the model has a dark background with small numbers and doesn't illuminate in the auto position. If the sun is bright with glare off other vehicles and you have to wear sun glasses they illuminate but the are either difficult to see or impossible. This is a safety concern, in my opinion, while you vehicle is in motion.

- Lawton, OK, USA

The cruise control backlighting on the "control stalk" blinks/flashes erratically in the driver's peripheral vision. This is quite dangerous and distracting. This happens at all speeds and driving conditions but seems to be worse when having to turn the steering wheel more (I.e. a parking lot vs. Changing lanes on the highway).

- Mcfarland, WI, USA

The cruise-control stalk light flickers at night causing distraction

- Ashburn, VA, USA