2004 prius. 12v battery died. Put in new Toyota brand battery. Now have warning lights. Red triangle, cel, brakes and in the display screen the hybrid light. I can disconnect the12v and clear them but in 1- 10 miles they come back on. Car drives normally. Need advice...
Any chance you accidentally hooked the battery up backwards for a second before turning it around? What's the voltage of the new battery?
The lights tell you there are trouble codes to give information about what's wrong. You can post the codes here to get suggestions.
Here's a thread that reviews several apps and devices that turn your smartphone into a scantool. Some are capable of checking codes and data for all systems on a Gen 2 Prius. https://priuschat.com/index.php?posts/3290690 Posted via the PriusChat mobile app.
