Yes.
There are several signs that an alternator is going bad. A few signs are dim lights, smell, warning lights, and a dead battery.
I obviously means that there is something wrong with the alternator or battery. When both lights are on 80 percent of the time its the alternator. Either your belt fell off or your alternator went bad.
You probably have a bad ground. Check the grounds on the brake lights.
If you mean all the warning lights come on at once this usually indacates the alternator is bad. It is either under or over charging (usually under) is a typical Toyota sign of an alternator going out.
A bad alternator will not give proper power to the vehicle. Dim lights, buzz in the stereo or a dead battery could all be causes of a bad alternator.
Can cause surging and/or flickering
A bad alternator will have the effect of draining the battery, resulting in dim lights, trouble starting the car and the like. It would be best to replace the alternator as soon as possible and possibly obtain a new battery. This may vary depending on how much the bad alternator has drained it. You can get your alternator and battery checked any time at Auto Zone.
Wrong alternator or new alternator is bad. no resetting needed
the regulator is getting bad in the alternator
The diode in the alternator is probley going bad, Check charging system. And replace alternator.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alt belt.
A few symptoms and obvious signs of a bad alternator are the battery not charging, dim lights, and a warning light.