Toyota Prius 12 Volt Battery Problems

Plugging in the evse to charge the traction battery does put a little charge into the auxilliary 12v battery.

Toyota prius 12 volt battery problems.

Likely you will need to recharge the 12v with an external charger for 10 hours or more depending on what charger your use. Loss of radio presets when turning on your prius. As far as i could tell the only thing that does is light a warning light on the dash. I already detached the battery and reset many of times.

The big red triangle light is on. While in previous prius gen models it was possible to read the voltage of the 12 volt battery in the gen 3 models 2010 through 2015 there seemed no way to. The prius electrical system has some characteristics outside the realm of usual car logic that can lead to a dead battery. A common issue that many prius owners face all the time is that blasted 12v battery.

While most modern cars electronically turn off your headlights to avoid battery drain in certain circumstances some prii the plural for prius will actually turn them on. It always seems that the 12v is going dead or causing issues with our cars. Signs of a weak 12 volt battery in a prius failure to start up or no response from the power button when attempting to start. Dont panic is not the hybrid battery it could be your 12 volt battery that needs to be replace.

But probably not enough to bring it back to full from a discharged state.