Warning Light Battery Symbol Stays On While Driving

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Warning Light Battery Symbol Stays On While Driving

Some Santro drivers notice that the battery warning light remains illuminated on the dashboard while driving. The car may also produce unusual noises like whining from the engine bay. This can indicate an alternator malfunction, belt slipping, o r voltage regulator failure. What steps should be taken to identify the cause of a persistent battery warning light, and how can the alternator issue be fixed?

Talha Kyanii asked on 04 Dec 2025 14:36:40 pm

1 Answer

12 views |

Gari Master - on 04 Dec 2025 14:37:47 pm

Possible Causes:

Alternator failure o r voltage regulator malfunction

Loose, broken, o r slipping alternator belt

Damaged wiring o r blown fusible links

Excessive parasitic load draining the system

Solutions:

Inspect alternator belt for proper tension and wear replace if needed.

Use a multimeter to check charging voltage while engine is running.

Test o r replace voltage regulator if output is unstable.

Repair o r replace damaged wiring o r fusible links.

If alternator cannot maintain voltage, replace the alternator.