Prius (Gen 3) :: 12V Battery Is Dead - Cannot Jump Start

My 12V battery is dead- not sure what happened, I usually double press the lock button to turn the headlights off immediately. It seemed odd- the taillights were on, but not the headlights and all interior dome lights were on but dim. I certainly did not get the 'door open' warning beep when I left the car.

The car is completely dead - no power locks, interior lights etc. I tried to jump start it using the fuse box jumper plate, but was not successful. I have heavy duty jumper cables and it seemed like they only contacted the jump plate at one singular point, but that was the best I could do. It was touching, just only one point on the 'teeth' was physically on the front metal part. I waited a full 5 minutes with the donor car revving and tried to start it, but nothing at all. (And yes, I was + red to + red) I tried to adjust the cable on the plate a few times, but could not get any better of a grip. No dashboard light or anything ever came on- the car was just as dead.

What could the problem be? Should I try smaller cables for a better connection with the plate? How long should it generally take while revving the donor car? Or is this something more sinister?

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Prius (Gen 2) :: Optima D51 Yellowtop Sometimes Won't Start Until Jump It

been having problems with my optima yellowtop that is less than 1 year old. Sometimes my car starts fine, sometimes it won't until I jump it.

Spoke to Bernie from elearnaid (who I bought it from) and he says with my short driving habits (10min to work, 10min home) that the battery isn't getting a full charge from my engine because of the short commute...

also now my immobilizer (smart key) won't unlock doors without using keyfob or start car without keyfob in slot...

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Prius (Gen 2) :: Dashboard Lights Come On After A Jump Start

I'm having my 2008 Prius for around 16 months no. Yesterday, after work I got in the car to drive home as usual, I put the key, pressed the brake pedal and the Power button, noticed that the dashboard lights come ON, I opened the four windows as it was too hot inside the car, then I noticed that the radio doesn't work and the display screen as well. I thought I haven't pressed the brake pedal enough so I pressed the power button again, and the car stopped. I tried to restart it , but with no luck, now all the windows are open and I couldn't close them and couldn't get the car starting. I pressed the lock button on the key to lock them, but it didn't do anything.

I waited for around 1.5 hour till my brother and his friend came, and they said it might be the 12V battery, once they put the charging cables between the two cars, mine started to operate. This hadn't happen to me and it was really a not nice experience. They told me to try it today morning, if it doesn't work, then the battery might need a replacement.

Today morning it worked fine, but I noticed that the Auto feature of the driver's window is not working and that the speedometer is giving wrong value (approx. lower by 20 K/hr).

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Prius (2010-12) :: Shuts Off After Jump Start

I haven't been able to successfully jump my 2010 Prius. It sat for about a month and the 12v battery is dead. I've connected everything up as described in the manual. I've kept the second car at about 2K RPM for about 5 minutes to charge the Prius. I am able to get the Prius to start up just fine, but as soon as I disconnect the jumper cables, it dies right away. I've tried getting the Prius engine to come on for several minutes, but as i understand it, there's no alternator, so that's probably not charge the 12V battery.

I've gone through this cycle about three times now with the same results. Every posting I've seen doesn't indicate anything special needed after you disconnect the cables. Is there something I'm missing?

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Prius (2004-09) :: 2007 - Dead Battery Won't Jump Start

I have a 2007 Prius Package Six. I went away on vacation over Christmas and when I got back the battery was dead and the car wouldn't start. No problem as I was easily able to jumpstart it with a portable battery jumpstarter. However I kept having the same problem as apparently the battery wasn't maintaining a charge. So obviously my battery is kaput and needs replacing. I've watched the videos and plan on replacing it myself.

However when I went out this morning to jumpstart the car it wouldn't jumpstart at all. When I hook up my battery jumpstarter nothing happens. Nothing lights up. The car won't start. Even if my 12v battery is completely dead and cannot maintain a charge, shouldn't I still be able to get the car started with a jumpstart? I realize that as soon as I turn it off I will have to jumpstart again. But I can't figure out why a jumpstart won't even get the car fired up.Am I missing something?

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Prius (2004-09) :: Red Triangle Is Displayed, Along With CEL On Dash After Jump Start

Recently, my Prius hasn't been getting much use, so the 12v battery drained. The car worked ok after I gave it a jump. But, because I don't drive the car very much, the battery drained again, maybe completely.

When I jumped it again, the car ran ok, but the red triangle is displayed, along with the check engine light on the dash, and a red car icon on the MFD. The car drives, but the lights are on.

Before replacing the battery, should I take any steps?

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Prius (2010-12) :: At Jump Start Interior Lights Went Back To Really Dim?

With A DeWalt 12V Battery....

I left the hatch up for a few days because I didn't drive it due to hot weather. The battery died on me of course. The dead battery measured 6.59v No amount of "battery recovery" time is going to recover it to start up the Prius. I charged up an old DeWalt 12V NiCad battery. I jump started the Prius with it. When I power down the Prius, the interior lights went back to really dim.

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Prius (2004-09) :: 2006 - Jump Started Using Another Car Now No Power And Won't Start?

2006 prius. Yesterday gave a jump to a friend with a motorcycle. After I got back in the car, no electricity whatsoever. Jumped my prius using another car, started fine and drove home, no warning lights. Same thing though after turning the car off, no electricity at all, can't start it.

Eventually figured out that I had blown the 120A fuse, so replaced it and the car starts fine now. But... I get the triangle with the exclamation point, and the car with the exclamation point on the mfd. What might be causing this? Battery reads 12.5v with car off. I find it a little strange that I didn't get any warning lights when I jump started it, but do now that it starts from its own 12v battery.

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Prius (2010-12) :: How Does Jump Start Works On Hybrid Engine

I am wondering how does the jump start works on the Prius since it uses a electric motor to start the engine but not a conventional starter.I recently drained the 12V battery (left the interior lights on for two days) and had to take the battery out from the trunk to recharge it. Initially, I tried to jump start it at the specific jump port at the front of the car but it didn't have any effect at all. By that, I mean as if there was no external power source given to the Prius - i.e., no lights came on and no response when pressing the Start button.

I mean zero electric current at the Prius. Is the electronic starter motor power driven by the hybrid battery? If that is the case, it may explain why jump start didn't work in my case because it only passes the power to the 12V battery which doesn't drive the electric starter motor. So what good is the jump start for if it doesn't work like a conventional car? How this process works on Prius?

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Prius (2010-12) :: 12V Battery Fully Drained / Car Won't Jump Start Either

The 12V battery must have been drained completely over the weekend. None of the lights (interior and exterior) are working. The car won't start even using jumper cable. I guess the 12v battery must have some juice remaining to power up the computer in order to jump start the engine. Am I correct in this assumption?

My Prius is only a little over three years. What is the warranty on the 12v battery? I read that the OE battery is not the best. How long would I expect the OE 12v battery to last?

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Prius (2010-12) :: Check Hybrid System Light Came On After Jump Start

Check hybrid system light came on and the whole dash lit up like a christmas tree. After i jumpstarted the 12v battery when it died. It was driving fine for about half an hour and all of a sudden the lights came on during acceleration from a stop light.

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Prius (2010-12) :: Low Air Pressure Icon Came On / Difficulty Removing Tire Valve Caps

We are having extremely cold weather. Yesterday my low air pressure icon came on. When I went to check the air pressure, I could not remove any of the caps.

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Prius (2010-12) :: Reverse Polarity Jump Start - Power Button Blinks Orange Never Goes Green

THE PROBLEM: Our Prius 12V aux battery died after my wife left the light on inside the car and instead of buying a new battery, we decided to try jump starting it. My wife tried jump starting our Prius with the neighbors pickup truck and even though I wasn't physically there to witness it, I'm pretty sure that the polarity got swapped during the process. It wouldn't start afterwards, so we went out and bought a brand new 12V aux battery. The prius still will not start. No electric components seem to work (door locks, back brake lights, windows, radio don't work). The dash only shows the orange exclamation mark and the check engine light, nothing else. The power button blinks orange, never goes green.

TROUBLESHOOTING that I've tried:

1. Checked the big 120A fuse right on the positive + terminal. Visibly looked good.
2. Checked all the fuses by the drivers left knee. All tested good with resistance + visible checks.
3. Checked all the fuses in the fusebox under the hood. All tested good EXCEPT the big relay integration fuse under the white plastic cover. It was definitely blown.
4. Replaced the relay integration, still no luck, same exact symptoms.
5. Tried force starting the car in emergency mode by holding the brake and power button down for 15+ secs. The engine starts, but the dash is still dead showing just the check engine light and orange exclamation mark. Can not shift gears or drive.
6. Tried slow charging the NEW battery to get the voltage higher, still no luck. It's testing about 13V with everything off.

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Prius (2010-12) :: Can Use Traction Battery To Jump Start / 12v Battery Dead?

If my traction battery has plenty of 'juice' in it, and my 12v battery is dead....is there any way to 'jump' the 12 volt battery with the traction battery to get the car started?

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Prius (2001-03) :: 2001 - Reversed Polarity Jump Start

2001 Prius

polarity got reversed on dead battery. Main fuses OK so did I toast all the CPUs?? or not...

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Ford F-150 (2004-2008) :: Multiple Electrical Malfunction - No Start Occasionally Then Jump Start?

My F150 4X4 would not start a few days ago, after only having turned it off a few minutes prior. The gauges would sweep wildly and get stuck at various positions. I checked the fuses and they were fine, then unplugged the battery for a bit and it started back up. Occasionally it won't start and i'll have to disconnect the battery again to get it to start.

I'm still having some strange electrical issues though. The radio no longer turns on unless the ignition is turned to AUX. My back up alarm for going in reverse doesn't come on anymore. The gauges take at least 10 seconds to wake up after starting the truck. The dashboard blinker indicators will randomly stop blinking or making any noise. I was thinking it could be the computer, but could it be something else?

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Passat (B5) :: No Power At All - Cannot Jump Start

Came out of day of work to find my passat dead. Couldn't unlock it with the remote..no lights...no power at all. Hooked up my friends car to jump it...got the lights to come on but could never get the car to get past the clicking/lights flickering stage.

Never had battery problems before this, so I am confused as to how it just totally died. Tried for a long time to jump it....no luck. As soon I as I would unhook the other car, mine would die completely and I would have no lights, locks, anything.

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Saturn - S-series :: 2001 - Car Need Jump To Start

I have a 2001 Saturn sl. Within the past two weeks I've been having issues with my car needing jumped to start. I've replaced the starter last year. The battery is only a few months old and have had the alternator checked. I put my car in neutral and my car died...

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Volkswagen - Passat :: Car Randomly Will Start On Its Own Or Not Even With A Jump

My son has a 1999 VW Passat Wagon with a 1.8 turbo 230,000 miles. He came home from work, parked his car and the next morning for school it did not start. He inserted the key and turned it and the engine would not crank. All dash lights worked and such. He did notice the power window were not working and the interior lights either. He jump the car and worked fine, until he shut it off, and again needed a jump to start.

I looked at it, battery and alternator tested fine, battery is only a year old. the car now randomly will start on it own or not, even with a jump. I had no codes pop up on the computer scan. I am hearing things like climate control module and another fuel module in trunk and water issues. I was told to check connect at starter and change iginition switch. Have not done the ignition switch yet will need to get car up on block for starter as my son has lowered the car quite a bit. I had the computer codes checked by a VW tech and he seems stumped too.

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