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Why does my battery light not go away after replacing alternator and battery?
The most common is, again, a loose connection either with the control plug (aka “relay” plug-in), charging line connection, or the ground. The other is a blown fuse or defective connector or relay, which could have been broken or shorted when the alternator was installed or on the first start-up after its installation.
Why is my battery light on but alternator is charging?
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.
Why is my battery light on with new battery?
An illuminated battery light could be due to a number of issues, including: A loose or corroded battery cable. A problem with the alternator or voltage regulator. Damaged cells or plates inside the battery.
How do I turn my battery light off?
What to do if your battery light comes on:
- Inspect the battery. Check your vehicle’s battery for signs of corrosion on or damage to the terminals.
- Check the alternator. Take a look at your alternator for any loose or missing electrical connections.
- Look at the serpentine belt.
- Check your fuses.
- Test the battery.
How long can you drive with battery light?
You can drive the car with the battery light on but you will only have on average 15 minutes. After roughly 15 minutes, your car will run out of electrical power and the car will stall.
What should the voltage be on a Subaru alternator?
Then, with the engine running at around 1000 rpm, measure the voltage across the battery — should be around 14 V, but I suspect you will find it lower. Then measure the voltage between the battery negative post (not the cable clamp) and the car body, the engine block and the alternator case (three different measurements).
Why is the battery on my Subaru not charging?
The first time, it was on the freeway going 60mph when suddenly it lost all power and died, the AT Oil Temp light came on and the check engine light came on, and the battery was too dead to turn the engine over. No battery light came on, no gauges in the red.
How old is the battery in a Subaru?
The battery passed both tests, furthermore given its behavior it seems to be capable of holding a charge just fine. The battery is however 5 years old. I cleared the errors from the computer, used a special spray cleaner on the existing Master Valve Control, replaced the alternator, and used a battery terminal cleaning/maintenance kit.
Why does my alternator not charge my battery?
This will prevent the alternator from charging the battery, but not cause the battery warning light to come on until the car stalls due to lack of power. If that’s the case, it’s then a matter of finding where there’s a bad ground connection.