Toyota Matrix owners have reported 37 problems related to car accelerates on its own (under the vehicle speed control category). The most recently reported issues are listed below.
While traveling on the highway and without prior warning, the vehicle suddenly accelerated. The consumer was unable to read the dashboard lights when the sun was extremely bright.
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When at a stop sign or when placing vehicle in reverse engine will race and vehicle will unexpectedly accelerate out of control. Engine intermittently idle up to about 2,000 rpm regardless of temperature. Cause not yet determined. Problem is similar to pe04021.