0
If your electrical system is working as it should, using your headlights will not drain the battery. Of course that is assuming your engine is running. More than likely your alternator is not putting out enough voltage to keep the battery charged with the headlights on. Take your car to a trusted mechanic or auto parts store and have your charging system checked. You may need a new alternator. A loose drive belt can also cause this so make sure the belt is in good working order and adjusted correctly.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Why would the headlights drain the battery on a 1996 Lexus with a new alternator?
The new alternator is bad happens all the time.
What is considered normal battery voltage drain with engine OFF - 1985 Chevy Celebrity?
Battery drain would depend on what else is on, for example headlights, courtesy lights, glove box light etcetra. If there is nothing electrical on then there should be no drain.
What would cause the battery to drain down on a 1997 Saturn SC?
leaving your lights on for a long period of time.. headlights or just playing the radio and leaving it play for a long time
Can electric seat belt drain car battery?
Yes, if the relay was stuck it would drain the battery.
Do running headlights drain the car battery?
No. The power to illuminate the Daytime Running Lights (DRL's) is supplied by the alternator, and does not have to be supplied by the battery. Once a vehicle is started and the engine is running you could remove the battery from the car entirely and everything requiring current would still operate.
Would a bad battery connection make headlights dim?
Yes
Why would the negative ground drain the battery when car is off?
Because if you reversed the polarity at the battery it would blow the fuse through which current flows to the drain.
Why would battery drain after motorcycle is started?
Its not charging.
What causes a car battery to drain on a mercury sable?
A car battery in any car would drain due to a short in the electrical system.
What would cause dashboard and headlights to get bright and dim on 2005 dodge magnum?
A bad battery or faulty battery connection.
What would cause the car to keep running once ignition turned off if headlights were still on?
Headlights run off the battery not the ignition...
Why would just the headlights not come on when you turn on the lights?
A broken wire, a dead battery.
