What causes the battery light to flicker on and off?
A fault with the alternator is probably the main reason for a battery light to flicker. It means your battery has taken over to keep the electronics working. As soon as the output from the alternator drops to a certain fairly low level, the battery light flickers.
Why battery warning light comes on intermittently?
A loose or corroded battery cable. A problem with the alternator or voltage regulator. Damaged cells or plates inside the battery. Faulty wiring in the car’s electric charging system.
Why does my battery light keep popping up?
#1 – Bad Battery With age, the cells or plates can break and the electrolyte solution can leak. If this happens then the battery needs to be replaced. Bad wiring or bad grounds can also cause the battery to not take or hold a charge.
Why does my Toyota RAV4 Battery Light not flash?
We brought it in to our local TOYOTA dealer. The technician there could not get the light to flash, and all tested normally, even under full load. Also checked wiring and ground points, and could see nothing amiss. He “suspects” there is a defect in the alternator.
What should the volts be on a RAV4?
Specifically, you’ll need to set it to 20V DC. With your Rav4 turned off, you’ll connect the negative side of the meter to the negative battery post or wire. Touch the positive side of the voltmeter to the positive battery wire. With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts.
Why is the battery light flickering on and off?
The shop repairman diagnosed a bad alternator, which he replaced and then tested the system before we returned to pick it up. Three days later, the battery light started to randomly flicker on/off-anywhere up to 5 seconds long. Immediately brought it to our local mechanic who checked the battery, alternator, starter and found no problems.
Why does the battery light come on when I start the car?
It’s almost always going to be caused by a bad battery or alternator. The battery light comes on when it detects that the voltage in the battery is too low. Most battery lights will come on when the vehicle starts if the computer has detected that the voltage was too low for a quality start.