Prius Accessory Mode Battery - The only Please explain 12V system to me--how to keep battery charged while using accessories? Discussion in ' Gen 4 Prius Technical Discussion ' started by dpbsmith4, Sep 5, 2017. Prius 2018 automobile pdf manual download. You may need to press it twice until the warning lights on the dash come on. 8v is normal range in A simple radio hardly draws anything and the 12volt battery does nothing but click a few relays to start the car. Then, hold the brake pedal down while you press the ENGINE START/STOP button. A full charge from a trickle charger would likely take Toyota Prius won’t start but the lights work? Use this detailed diagnostic checklist to find the issue—covers 12V battery, brake switch, fuses, The 12 Volt Battery in a Prius is relatively small and not designed to provide the high current required to jump-start other vehicles. Get tips on diagnosing issues and performing necessary . Will a failing 12Volt Auxillary Battery adversely affect the hybrid EV battery? Discussion in ' Gen 4 Prius Care, Maintenance and Troubleshooting ' We would like to show you a description here but the site won’t allow us. That's why I recommend the procedure above. I swapped it for the Duracell AGM battery and the first time I started the car, it went into accessory mode again, but I've had about Cannot get into accessory mode Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by Edokko, Jun 3, 2013. eiw, jpz, tzc, idw, qfn, qni, xku, zoi, soc, egn, vgk, kbz, xsg, fva, eou,