What does it mean if the alternator light comes on while driving?
battery warning light
CARS.COM — If the battery warning light (a light in the shape of a battery symbol) on the dashboard comes on while you’re driving, that means the charging system isn’t working, but the fault may lie in something other than the battery. The alternator generates the power that is stored in the battery.
Does the alternator warning light indicate?
What the alternator warning light means. When you start the engine, the car will check to make sure the alternator is outputting the correct voltage. When the light stays on, it indicates that the computer has detected an issue with the charging system.
How do I check the alternator light?
With the engine on:
- Step 1: Open your hood and so you have clear access to the car battery. Locate your alternator and check to be sure the alternator belt isn’t loose.
- Step 2: Turn your multi-meter to the 20 V setting.
- Step 3: Start the engine.
- Step 4: There are two ways to test the voltage coming from the alternator.
Is there an alternator warning light on a polo?
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How does the warning light on an alternator work?
If the alternator has an external regulator, the warning light wire attaches to it in the same way as a dynamo. Again the terminal will be marked WL or IND. Some cars, however, have an alternator which uses a separate relay for the warning light circuit. In this case you should disconnect the wire from this relay.
What are the warning lights on a VW Polo?
Whether you’re driving a VW Golf, Passat, Polo, or another model, the warning lights on your dashboard follow a traffic light colour system: Modern Volkswagen cars are filled with lots of sensors that monitor how each system in the car is behaving.
What to do if your alternator is not charging?
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