Worked! You are a HERO. It clarified me on engine start and saved my day.

"Press on the pedal and wait 20 seconds" You saved me with your trick. Many, many thanks for posting!

THANK YOU. You just saved my life. I'm sitting in the emergency parking lot waiting for my husband to come out and I need to get him home. I can't believe this worked I was so scared. Thank you

This video saved me today. 4 years later and it’s still helping people. Thank you so much!

Wish I knew this trick when the first 12v battery in my wife's 2010 Prius died in 2017 leaving me stranded 70 miles from home. The replacement battery has been acting up recently and finally quite this morning. After seeing this, I went out and tried it. It worked. Thanks!

It worked!! Haven’t moved the car in 4 days in freezing temperatures and thought I was screwed. Thanks man saved me tons of money and time.

Honestly this man is a life saver! I was stressed out stranded when my battery went flat not knowing what to do. I watched this video out of luck and I tested it and worked immediately! Truly a hero! 😂

I tried what you said as a last ditch effort. My car would not start and was giving an error message " Low 12-Volt Battery" It worked! Kuddos to you! I did NOT miss a day of work AND I did not have to pay for a tow. Thanks!

I have never left a comment in my entire life. Thank you for this. Just got me to work

Thank you. I assumed that the small 12v battery was used for starting the engine, as in all of my prior non-hybrid cars. This was an excellent tip.!! 👍

Absolute life saver and good general knowledge to learn! Was adjusting my headlights and was farting around for too long and thought I screwed myself haha!

I just instinctively did this on my Prius v. Having a long drive ahead, it is good to confirm that I could still get by and be able to replace or recharge it some time after the drive.

Brilliant! It works, and this is buying me a few days to get a battery. You're a saint for posting this! Thanks.

Thanks for the video. It clarified a no-start issue for my 2010 Prius!👍 I don't know why you don't have any likes. You have my like brother! Jazak Allah!

Have to thank you for this it’s 4am and I was stuck at work and this saved me

It worked! Thank you. My son and I were hanging out in the car and the battery died quick. This trick worked thank goodness

Life saver of a video... Thanks dear, thanks a lot. I could help my wife over the phone while sitting on my computer thanks to this video. 😀

Super, I have to jump start my Prius almost everytime I go out, due to working from home. Inwas told to buy trickle charger by my dealership, but I don’t have outlet as car is in apartment’s parking lot. This is super really helpful, plus never heard this before. 😬😀

I HAVE been having this trouble about every other morning. after work it is fine, but in the morning esp. it it is a little chilly out i spend about 5 min cycling through. i never thought to just wait and let the battery recover from the pump draining it. i will give this a try in the morning.

Thank you! Hopefully this will get me by until I can replace the 12V battery in my Prius.

Thank you brother for your help I have enough information now about 12 v small battery, before one hour my car system light gives me warning for the battery, Thank you from Seattle Washington

Just bought a new battery at KOI auto parts for $158.80 not too bad. Great info good job. I think I accidentally figured this out in my panicked frustration..

Thank you my man you save me whole night bless you

Thank you so much bro I was stuck in a parking lot 😁

ThANKS FOR THIS useful TIP!

Thank u so so so much ur video really help me at the very late night my car battery been law and I had no me to come to help but ur video sort it out for me . Thanks a lot may God bless u

Thank you for posting. This saved me this morning from a 4 hour wait for a tow & I was able to get to work on time.

Thank you so much for this video! I wouldn't have been able to start my car without it

Not all heroes wear capes. You’re a lifesaver

You absolute legend!!! Thanks so much! Love from Sri Lanka

Imma have to try this at night - my infotainment screen is trash and invisible during the day 😆. Sounds like I have the exact same problem (it began after some heavy rain for three days nonstop so you may be on to something). Thanks in advance!

Saved my life at mid night . Thanks for your video

Man, that worked. Thanks

You’re a boss dude thank you

Thank you this worked after trickle charging my totally dead battery for only an hour.

THANK YOU, THANK YOU!!!

You saved my butt today with this video! Thank you for posting it!

Hahaha, worked like a charm Yesterday it didn't start as usual...today i tried waiting for the sound to go away and it started

Thank you! It worked!

Which battery needs to change if that the issue, thanks for your video 🙂

Will that work on a 2018 prius?

Go to Toyota Dealer to buy the battery, its warranty is 7 years at least pro-rated of course....but it should be the same 12v battery originally installed in the Prius and the price is cheaper than other brand ,,,just go to Toyota dealer,,,it is cheaper!

Thank you! It worked! My question is now: Do I have to do it everytime when I start my car untill I replace the battery or the battery gets charged after running for a while?

This helps get passed the load draw, so it may have enough power to start afterwards.

It works for me too! Perfect, you are a hero!

THANK YOU SO MUCH... I don't know what Toyota was thinking when they programmed this... 😓 You saved me

It works

Thanks!!!! Your video saved my day :)

Ahha! Wifes Prius just had the same problem.. On the way to replace the regular battery..

Thanks a lot. Its so helpful.

Got to say, Toyota could have designed it to allow using the high voltage battery to charge the little one, in an emergency.

I came in here because I want to help someone who has the same problem as mine. Just recently my 2008 Prius went completely dead even after changing to a new battery. There was no life, nothing at all. I had to ask my friends to give me a jump. After watching many KZfaq videos I found out that one of my fuse was gone. When you open the fuse box, at the right under C section, there are two blue no.15 fuses. I changed the second one from the top. After that I also had to tighten up my negative volt battery which is in the trunk attached to the back of the car. Make sure you unscrew the negative volt before putting on the new fuse. After that it came to life. Hope it helps someone.

Thanks a lot . it works for my prius 2012.

You totally saved me! Twice. Thank you!

Thanks for the useful video. Does that trick also help Prius 4 gen. My 12 v battery goes flat if I don't use the car for 5 days. Greetings from Germany

Thanks a ton for this! Worked perfectly for me.

That's actually work. Thank you so much

Thanks man 👨 🙏 it actually works

Did work for me...thanks alot

Totally helped. Thank you so much!

Thank you so much! You saved my vacation!!!

You rock

Thanks Mate it's safe my Day.

Great information thanks 🤲

You are a FUCKING GENIUS!!!! Worked with my 2017 Prius (12V battery almost dead) at the first attempt Regards from Cancún !

For the title of the video, I would call it "how to start it with a LOW 12v battery" because this doesn't work at all with a battery that is actually dead.

When my car wouldn't start, the steering wheel felt stuck and the brake pedal was a lot harder to press down on. Did this happen with yours too?

Thank you- works on Lexus too.

Wow...very useful information!

Works 100%! TY

I recently had this happen when I was at a hardware lumber yard cutting some wood I needed. I left my blinkers on not realizing that that is actually being powered by the actual 12 volt battery and apparently I can drain it pretty quickly if you leave them on for too long. But I thought maybe if I just shut off the car for a while completely maybe the hybrid battery would trickle charge the 12 volt battery? I mean I have a 2018. Not really sure how the whole system works but it was the only thing I could think to do. Only had the car for a few weeks now and surprisingly I was able to get it to start again. Plus the hybrid battery was nearly full so even increased my mileage a bit poking through the rest of the lumber yard back to the entrance. I know this thing has a little over 100,000 mi on it and I know the car doesn't use a alternator so maybe I also need a new 12 volt battery. But I wonder would this car support something like one of those like car starter systems that you can plug into the 12 volt adapter just to give it enough to start the regular thing?

You saved my day, thanks

Thank you! Not all heroes wear capes!

You should wear a cape!

Seriously save my butt! This worked! Thank you so much! 🙏

Almost nobody is aware that the Toyota engineers made a special procedure to force the HV battery to recharge an over discharged 12v battery that is unable to start the car but can still boot the computer, and go into accessory mode. This is what they say on page 539 of my 2010 Prius user's manual: " (Section:) Steps to take in an emergency (Sub-Topic: ) Emergency start function When the hybrid system does not start, the following steps can be used as an interim measure to start the hybrid system if the “POWER” switch is functioning normally. [Step 1] Set the parking brake. [Step 2] Set the “POWER” switch to the ACCESSORY mode. [Step 3] Push and hold the “POWER” switch for about 15 seconds while depressing the brake pedal firmly. Even if the hybrid system can be started using the above steps, the system may be malfunctioning. Have the vehicle checked by your Toyota dealer. "

Oh my goodness thank you so much for this video!

What about when the car shows absolutely NO sign of life? I bought a battery charger from Amazon, tried charging mode, tried repair mode, actually got the volts up to 12.5 and the battery charge level was going up finally after the "repair" mode but it's still not doing jack when I put it in and try to start. I only get a red light on the keyfabs when I press, that's the only reaction I can get from it. Even the electronic door locks aren't working. I'm just hoping it has nothing to do with my hybrid battery, just the front one it seems. But I did replace the big battery a couple years ago, and my daughter left the back light on last time before it died. So there's a brief history on it! Any ideas?

Sir, you are a star! thank you,

Legendary! Worked!

Will it work for the 2002 Prius?

Thank you so much, oh my God this video just saved me!

Thank! for sharing your detailed video on defining a Low 12v battery. it really helpful to me. But have one question? Which 12v batteries are referred to? It is the front of the hook or the BACK of the left Hatch trunk?

Thank you!!

Jazāk Allāhu Khayran (جَزَاكَ ٱللَّٰهُ خَيْرًا, jazāka -llāhu khayran) "May Allah reward you [with] goodness."

Thanks for the help 👍

Thank you for sharing

Nice to know thanks 👍🏻

Hahahahahaha it worked!!!! You my friend are a legend!

For me it hasn’t worked today. There are actually no lights on the dash turning on, neither will the door locks work with the key and the inside lights don’t turn on. I didn’t have any previous warning of the battery dying. I wonder if it’s really the battery. Would The lights inside the car and the doors lock with the key if it wasn’t the battery?

thanks i needed to take my car to get the new battery installed !

Live saver. Thank you

You are a life saver

I tried this with my 2006 Prius when the battery was COMPLETELY dead, no lights, no dash functions. Holding the brake pedal down caused no pumping sound. I attempted it with several wait times, 20 seconds, 45 seconds, etc, nothing happened. So, I guess this video only applies if you have a marginal 12V battery. I was able to jump the car from another battery and get it going, but that was the only way.

Thank you!!! This happened a few weeks ago and I forgot what I did to get started. So do I need to replace a battery?

I will try this to get my car to a store that sells new 12 volts.

Press on what paddle? So press on the brakes, when the sound goes away, press start?

Life saver,, thank you!!!

Thank you!

BRO WORKS LIKE A CHARM