Скачать или смотреть How to Reset Battery Warning Light | Alternator Warning Light

🔧 What Does the Battery Warning Light Actually Mean?

The battery warning light or alternator light on your dashboard is not just about the battery. It indicates a problem with the vehicle’s charging system. When this light turns on while driving, your alternator may not be charging the battery, or there’s an issue in the wiring, voltage regulator, or fuse system.

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If ignored, your car could stall suddenly once the battery drains out completely—even if the battery is new.

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🛠️ How to Reset Battery Warning Light (Step-by-Step)

Before resetting the light, it's critical to fix the root cause. Here's what you should check:

✅ 1. Check Battery Terminals for Corrosion
▶︎ Dirty or corroded terminals can restrict power flow. Clean them using a wire brush and apply terminal grease.

✅ 2. Check if Battery Itself Is Dead or Weak
▶︎ Use a multimeter to test voltage:
12.6V or more = good
12.4V or less = weak
12.0V or below = likely dead

✅ 3. Check the Fuse Box
▶︎ Locate the charging system or alternator fuse (labeled BATT, ALT, CHG, etc.). Replace any blown fuses.

✅ 4. Check Alternator Circuit Wiring
▶︎ Inspect all wires and plugs connected to the alternator. Look for:
Loose connectors
Frayed or burnt wires
Dirty or corroded terminals

✅ 5. Check the Alternator Belt
▶︎ A loose, worn, or broken belt means the alternator won’t spin properly to charge the battery.

✅ 6. Check the Alternator Voltage Regulator
▶︎ A faulty regulator may prevent correct voltage output. You can test this using a multimeter:

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Chapters:
00:00 - Intro
00:32 - What Battery Warning Light mean?
01:52 - Check Battery Terminals for Corrosion
03:29 - Check if Battery Itself Is Dead or Weak
04:45 - Check the Fuse Box
05:41 - Check Alternator Circuit Wiring
06:36 - Check the Alternator Belt
07:21 - Check the Alternator Voltage Regulator