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The charging system output voltage is too high or low.

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Q: What if your alternator light remains on what does this mean?
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Why does the alternator light stay on after having replaced the battery and the alternator?

If the light remains on then the system still isn't charging as it should. Check the plug on the alternator and also that the wires to the alt have a good connection.


What does it mean when the GEN light comes on when you start your 72 Monte Carlo?

The GEN light is supposed to light up when the car is started as an indication that the light is functional. If it remains on after the car is started, however, your generator (alternator) is either malfunctioning or not working.


What does it mean when my Renault Laguna battery charge warning light comes on aswell as the stop light?

Your alternator is defective and not recharging the battery. Have the alternator checked.


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Battery and brake light coming on means the Alternator is not charging the battery . It could either mean a bad circuit connection or the alternator is just shot. Have the Alternator checked.


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The alternator is over or under charging.The alternator is over or under charging.


What does the alternator light mean on a 2002 vw passat?

That you'r cars alternator don't work properly ! eithter the "fanbelt" is broken or the alternator coal is bad .


What does it mean when the battery light come on on a 1999 dodge caravan?

The alternator is over or under charging.The alternator is over or under charging.


What does it mean when the battery light comes on in a car?

That typically means that the alternator is not functioning.


Why does your alternator light come on randomly and intermittently?

If an alternator light keeps coming off and on, this may indicate that the voltage output of the vehicle is going up and down intermittently. This may mean the alternator may need to be replaced soon.


Does the battery light being on mean the alternator is bad?

Not all the time. The alternator warning circuit wiring to the instrument panel could be grounded


What does it mean when your Volkswagen jetta's battery light comes on?

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The alternator is over or under charging.