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Resolved Question

Why do the headlights dimm when you start the car?

62 mths ago

Best Answer

Never start your vehicle when the light are on or when the air conditioner is on or anything else that draws a lot of electrical current. The battery (and alternator) will have a stressful time to deliver all the power that is required and that is normally when the weakest link fails!

62 mths ago

Answers -

Its the power or energy drain from the battery when you turn the ignition.

62 mths ago

Trek krag van die battery af!!!

62 mths ago

Because the starter motor uses a lot of electricity. Theres only so much to go around and so your headlights dim.

62 mths ago

Powersurge, net soos die Empress se.

62 mths ago

When you start the car you are using only battery power and the battery can only deliver so many amps to the starter motor to turn the flywheel. The alternator which charges the battery is not up to speed and the voltage on the battery drops causing the headlights to dim. You will also probably notice that the radio goes off momentarily and any other lights like the courtesy light will also go dim. Its always best not to have headlights on when starting the car as this places an additional load on the battery which diverts power away from the starter motor.

62 mths ago

Actually, your car wouldn't need a battery at all if it didn't need to be started! Almost all the drain on your car battery is from the starter motor, which is incredibly strong (as you will see if you operate it by mistake while the car is in gear - it's strong enough to make the whole car jump forward!) Once the car is started, part of the power from the engine is diverted to re-charging the battery and to operating any electrical equipment like the lights and radio, but it can take quite a while before the battery regains its charge! More sophisticated cars actually turn off the headlights and other electrical devices completely for the moment when you operate the starter motor, so all the energy from the battery can be diverted to the starter motor. In older or cheaper cars, if you're having trouble starting the car, turn off the lights and radio (and aircon, for a different reason) and try again. If you can avoid using electrical devices, your battery will charge more quickly.

62 mths ago

The car needs electrical power to start,therefor the car dumps the power going to the headlights.Thats why

62 mths ago

time for a new battery or have your starter motor check he he time for battery centre

62 mths ago

Try starting it with the lights off then you wont notice them dimming.

62 mths ago

All the power is diverted to the engine for a second or two...but why do you leave your headlights on when switching off the car?

62 mths ago

Nes al die slimmes al gese het, die krag wat van die battery getrek word sodra jy die kar aanskakel maak dat die krag na die lig vir die sekonde minder word.

62 mths ago

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