What should the voltage be on a Subaru alternator?
Charge the battery again and start the car. 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.
Why does the battery light come on after the alternator is replaced?
This would make the Battery Light come on. It is also possible that there is a problem with the fusible link or the alternator fuse for the charging system.
Why does the battery die on my Subaru?
The light seemed to be somehow perfectly synced with the engine dying. The problem existed for about 30 seconds of driving, then another 30 seconds parked, then the car died. The battery had enough power to roll the window down and then up again, but not enough to start the car.
Are there any problems with the Subaru Forester battery?
2017 was even worse for the Subaru Forester in terms of battery problems. More drivers complained of these same problems including a weak battery, one that would not hold a charge, one that died frequently for apparently no reason.
What happens to the alternator in a Subaru Outback?
The alternator in your Subaru Outback is the heart of the charging system. Without it, the battery would quickly run out of power and the engine would stall.
If there is no voltage at the alternator, check the charging system fuse in the under-hood fuse block. Reconnect the positive DVOM lead to the positive battery terminal and start the engine. The voltage should now read above 13.5 volts.
What should the battery voltage be in a Subaru Outback?
It should be above 12.3 volts with the engine off and the ignition key in the “Off” position. If the battery voltage is less than 12.3 volts, charge the battery before testing the alternator. A discharged battery may cause the alternator in your Subaru to overcharge and may be a possible cause for alternator failure.
Why is my alternator not turning on in my Subaru Forester?
The ECU must be fooled into thinking there is always a load present so the alternator cutout function does not turn on. Subaru Foresters do apparently have an ECU software upgrade available from the Subaru dealer, but for all the other models there is no software upgrade fix so the following work around procedure can be performed.