Two problems related to headlights have been reported for the 2003 Toyota Matrix. The most recently reported issues are listed below.
The auto headlight system that turns the headlights on and off does not function properly. It turns the headlights on at all times of the day, more often on bright sunny days when driving through shadows. This make it very difficult to read guages, speedometer etc.
The daytime running lights turn on mysteriously at night while the car is turned off. Symptoms included a dead battery after not driving the car for three days, and the dashboard panel lights turning off whenever the turn signal is used. Dealership denied there was a problem.