If your alternator is charging at 14.2 volts but the battery warning light is still illuminated, it could indicate a potential issue with the charging system. Here are a few possible explanations for this situation:
Faulty warning light: The battery warning light may be malfunctioning, causing it to stay on even though the charging system is working correctly. This could be due to a faulty sensor or a wiring problem. Consider having the warning light circuit inspected and tested.
Loose or damaged connections: Check the battery terminals and connections to ensure they are clean, secure, and free from corrosion. Loose or damaged connections can disrupt the flow of electrical current, leading to an inaccurate warning light.
Belt or pulley issues: A worn-out or loose drive belt or a faulty belt tensioner can affect the performance of the alternator, even if it is still producing the correct voltage. Inspect the belt for signs of wear, tension, or damage. Additionally, check the condition of the pulley to ensure it is functioning properly.
Failing voltage regulator: The voltage regulator controls the output of the alternator. If the regulator is malfunctioning, it may result in an incorrect voltage reading or cause the battery warning light to stay on. A faulty voltage regulator might require replacement.
