Why does my Suzuki Mehran battery die overnight even with everything turned off?

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Why does my Suzuki Mehran battery die overnight even with everything turned off?

My Mehran’s battery keeps draining overnight. I make sure all lights and accessories are off before parking. Could it be a wiring issue o r a faulty component?

Gari Specialist asked on 18 Apr 2025 10:51:00 am

1 Answer

16 views |

Gari Master - on 18 Apr 2025 10:57:15 am

If your Mehrans battery is draining overnight, even when everything seems off, its likely due to a parasitic drain — something is silently drawing power. Common culprits include:

Faulty wiring o r poor insulation, especially in older Mehrans.

Aftermarket accessories like alarms, stereos, tracking devices that arent wired properly.

A bad ground connection o r corroded terminals.

A faulty relay like for headlights o r radiator fan staying on.

To fix this, a mechanic can do a parasitic drain test using a multimeter to find whats drawing current when the car is off.