If a toyota matrix abs and brake lights are on, what is the cause?

We've all been there; we see the dreaded ABS light on the dashboard, and we automatically assume the worst. In the case of the Toyota MatrixAnd other vehicles, the worst isn't always the case; in fact, sometimes the cause of the lights can be relatively inexpensive to fix. The most common reason that these lights will illuminate is a defect with one or more of the wheel speed sensors. Sometimes, the issue is just dirt; other times, You'll need to replace them. Another common cause is a broken or damaged tone wheel, which is a little more of an expensive fix, but is still reasonable (the entire wheel hub must be replaced). However, Your firSTStep should be getting fault codes through an OBD-IiModule, whether Your own or through a major automotive parts store, which typically offers the service for free. Then, You'll be on a better path to diagnosing Your issue.