Can alternator cause battery light to come on?
As we’ve mentioned, a faulty alternator is often the culprit when a battery light comes on. If this is the issue causing your problem, your car will likely run out of battery power for up to an hour of driving.
Can a faulty voltage regulator cause your battery light and alternator light to come on?
The cause of the battery light could be a loose or corroded battery cable or other wire connecting components of the charging system, or it might be a problem with the alternator or voltage regulator. The alternator generates the power that is stored in the battery.
How do I know if my alternator voltage is bad?
If the voltage does not change when the engine is started, if it does not get above 13 volts, or if it charges above 15 volts then the alternator may be faulty.
Does battery light need to be reset?
A: After a battery is replaced in some vehicles, the battery charging system monitoring system will need to be reset. The message can reset by itself, but the car needs to sit undisturbed for at least eight hours. Perhaps with your work/driving schedule the car doesn’t sit long enough.
What should the alternator voltage be on an Acura?
Place the positive probe of the multimeter on the red terminal connector of the multimeter, then place the negative probe on a nearby bolt or part of the metal frame of the car. A good alternator will measure somewhere between 13.8 and 14.2 volts.
Why does my Acura Battery Light Come On and off?
This article applies to the Acura 3rd/4th Gen TL, RDX, MDX, 1st/2nd Gen TSX. An intermittent battery light, or one that comes on and off at an interval, is a common issue among several Acura models.
What should the charge voltage be on an alternator?
Turn on the high beams for 10 seconds and then turn them off. Measure battery voltage across the battery posts with your DMM. You should get between 12.4 and 12.6V. This means your battery is fully charged. If you get a reading below 12.4V, charge the battery before continuing. 5b. Measure the Charging System’s No-Load Voltage
Why does the battery light stay on when the alternator is off?
The alternator is definitely charging the battery and does not drain overnight but the battery light continues to stay on. Before spending money to test the fusible links, please advise If the alternator will still charge the battery with a faulty or blown out fusible link? Thanks.
Place the positive probe of the multimeter on the red terminal connector of the multimeter, then place the negative probe on a nearby bolt or part of the metal frame of the car. A good alternator will measure somewhere between 13.8 and 14.2 volts.
This article applies to the Acura 3rd/4th Gen TL, RDX, MDX, 1st/2nd Gen TSX. An intermittent battery light, or one that comes on and off at an interval, is a common issue among several Acura models.
Why does the battery warning light come on after replacing the alternator?
A relatively common “side-effect” of replacing a battery and/or alternator in a car is to have the voltage (battery) warning light come on. This is especially true in late-model vehicles with their more sophisticated internal diagnostic systems.
Why does the battery light appear and disappear?
The battery light is designed to warn you that there is an issue with the battery, whether it be a bad cell, low charge, or other various issues with the charging system. Sometimes, the problem isn’t with the battery itself, but rather the alternator or a cable or connection.