When the check charging system light comes on, it means your powertrain control module (PCM) has detected an issue with the charging system. This is not an issue that resolves itself.
How do I know if my car has a charging system?
Every vehicle has a charging system warning light — it's the dashboard warning light that (usually) has a battery symbol on it, or it might say “BATT,” “ALT” or “CHG.” You should see it every time you start your car; it'll pop on for a few seconds and then go out.
The check charging system light in your car will illuminate if it detects any corrosion on your car's cables and connectors (Battery Terminals). Designed to be excellent electrical conductors, battery terminals are usually reliable and durable.
Why is there a check charging system light on my dashboard?
When there is a check charging system light on your dashboard, consider the issue with your ECU, alternator, battery, blown fuses, impaired belts, loose wiring, or corroded terminals. Without prompt attention to any of the causes, the power may dissipate, leaving you without a car that works.
What does a check charging system warning message mean?
The check charging system warning message is essentially the same as the red battery warning light found in older cars. It indicates that the battery voltage or the alternator output is not high enough while the engine is running.
How do you fix a charging system warning light?
Depending on the cause, charging system warning lights can be simple or challenging to fix. Issues like loose battery cables and corroded terminals are easy to rectify. Battery replacement is also easy but will dent your pocket a little. However, alternator, computer, and wiring issues are challenging to solve.
What causes a check charging system warning light?
The main causes of the check charging system warning light are a bad battery, a bad alternator, a bad ground strap, and a bad auxiliary belt. Other causes include a bad negative battery sensor, different blown fuses, a new battery that wasn't registered, and a bad electronic load detector (ELD).