Prius (2004-09) :: No Startup After Aux Battery - Ready Light Does Not Appear
Aug 7, 2015
I have 2004 Toyota Prius 110k miles on it. New auxilary battery on it. VSC, Brake and Red triangle lights are on. The car wont start. System comes on, but ready light doesn't not appear.
If I discoonect the battery for a minute and connect it back, I am able to start and drive it. After a minute VSC, brake light comes on. I still can drive the car and it drives perfect. As soon as I shut it off, I won't be able to restart it again. I have to disconnect the battery for a minute to get it started. Inverter pump seems to be working fine.
I got the codes with the paper clip VSC 43, Brake 36. After resetting the codes, I drove the car and now it throws VSC 51 code.
Check engine light is not on. When I checked with OBD scanner, it does not show any codes. When we checked with shop's scanner, there was a code smth "LOST COMMUNICATION WITH HYBRID..."
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2007 Prius
I just replaced the 12V battery with an Optimus yellow top. The car still will not start. All dash lights come on, READY light does not. Car will only shift into Park and Neutral.
Battery reads 12.6 volts when not hooked up and 12.3 when cables attached to terminals.
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We just replaced the Traction battery in my 2004 prius. The car has 242,000 miles on it and was running fine when we pulled it in. The battery was purchased used from a 2005 prius with just over 80k on the clock. The replacement battery was removed from the wrecked prius less than a month ago.
The problem is that after installing the new traction battery, every thing looks great except the Ready light will not come on. There are no warning lights except the little red light that indicates there is no key in the car. The key will remotely lock and unlock the car so I'm sure the battery is not dead and the no-key light stays on even if I insert the key into the key slot on the dash. The shifter will only move from Park to Neutral.
What am I doing wrong? Is there some special procedure to go through to make the car recognize the key after replacing the battery?
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I've got a 2010 Prius w/ NAV. Yesterday morning, my Prius would not start. When I pressed on the brake, the green "Ready" button would not light up. When I pressed the start button, the NAV screen came on as did some of the dash lights, but the car engine itself was not on. When I hit the start button again, I had a yellow triangle on the left side of my screen that continued to blink.
From reviewing the forum, I believe that the issue is the 12V aux battery. I was able to get my car into maintenance mode, and the 12V battery was reading 8.6V; however, this was after my car had sat in the garage for 10 or so hours. However, by going into maintenance mode, I was again able to get my car to start. This morning, I drove my car to work (about a 15-20 minute drive). After I got to the office, I turned the car off and got back into maintenance mode. This time, it was reading 11.6V on the battery.
Am I correct that this is most likely an issue w/ the 12V battery going bad on me? I purchased my Prius in July 2010, and I have never changed the battery. It sounds like the "typical" lifespan for the battery is right around 4 years, so this seems to make sense.
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I replaced the HV Control ECU on my 2007 Prius, because my coding scan read POA1D. Now the lights on the dash all light up, but the Ready light does not come on.
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I recently changed out my 2006 blown gas engine with a great running 2008 engine and also replaced the hybrid battery. After connecting everything, my car won't start. All the lights come on except for the ready light. Does something have to be reset?
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I have a 2006 Prius that is giving me fits. The car is equipped with the smart key but it seems to be working normally. I insert the key, press the brake, and then press the power button like I am supposed to but the "ready" light doesn't come on and the car won't start. I checked the brake light switch and it is working correctly. 12v battery is charged and shows 12.35 volts. I have been tinkering with the car for the past three days and have only gotten the light to come on and the car to start twice out of the numerous tries.
The last time it started the dreaded "triangle" and check engine light were on so I plugged my scanner in and got code P0A1F, I had a spare battery ECU so I replaced it, while I was at it I removed the battery and cleaned the terminals, there was only a very small amount of light corrosion on a couple of cells. All cells tested good and had uniform voltage. I haven't gotten the car to start since putting everything back together. I have a small amount of experience with these cars but I've got alot to learn.
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I most recently drove my 2006 Prius around on Saturday Feb. 1, with no problems at all. I went out of town for a couple of days, and returned this afternoon to a car that will not start. I stepped on the brake, pushed Power, and things lit up, the "Ready" light flashed a few times but then went off. Power button light stayed orange.
Several warning lights on dash stayed on (!)/ABS/VSC/traction control, and a message came on the screen saying something about a problem with "P" parking, and that it should be parked level and the parking brake applied. It is sitting level with the parking brake applied already. Also, the door ajar warning light and beep start as soon as you open the car door to get in.
I'm thinking from what I've read that my 12v battery has died/is dying. I'm the original owner, bought car in March 2006, and it has just under 61,000 miles on it.
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Heading out on 4 week 3k mile road trip. Have 12v adaptors for a very efficient laptop and smartphone.
It seems that in "Accessory" mode the PIP is using only the dinky 12V battery so this is not a healthy solution. Is there a recommended strategy to put the car in semi-ready mode and reduce all possible drain so that utilizing the 12V will not be draining the traction battery reserves much at all?
I'm thinking that perhaps trying to put the car in "ready" mode with the FOOT OFF the brake indeed fires up access to the traction battery without firing up other things that require the full power monty that Ready mode with the FOOT ON the brake requires. Seems to me the PIP is a great mobile office solution if we could gain access to traction battery reserves without running much else.
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Just bought a 2011 Prius and I love it. When I push the power button to turn it on, the ESC light comes on along with the caution triangle light for about 3 seconds then both go off and the "ready" light comes on. is this a normal occurrence?
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I have a new-to-me (2 weeks) 2004 Prius, and my wife has noticed a weird behavior on start up which I have not been able to reproduce.
Occasionally when she starts up the car the brake light comes on as if the parking brake were set. The ready light will not be on. No other warning or error lights come on. If she turns off the car, and then turns it on again the light will be off and not return. Tapping or setting and releasing the parking brake has no effect.
She swears it has nothing to do with her pushing the parking brake or not pushing the pedal brake. This seems to have started after I set the parking brake one afternoon, but that could also be coincidental.
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So I had a random issue today. I went to start my car this evening, and it wouldn't start. The lights on the dashboard (warning, maintenance, etc.) lit up, and the headlights and interior lights were extremely dim. Figured it was an issue with the battery. Used my husband's car to run errands and came back about an hour later. We decided to try starting the car again, and it turned on, headlights and interior lights were normal brightness, but the gas gauge is at one bar, which I know isn't possible because I have only put 166 miles on this tank of gas. I reset the gauge at each fill-up so I can track how my mileage changes. The maintenance light is also still flashing. None of these were issues I had last night, so what could be causing all these problems? Can I fix it myself, or do I need to take it into my Toyota dealership?
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I have a 2004 prius that sat for 2 years, I just replace a cell, worked on the HV battery and made sure it was balanced. I got the battery back in and I can't get it to go into Ready mode, I can get it to ignition on and charge the battery and into acc. I've checked several components to see if they were causing the issue.
- 12v battery is good
- brake light switch seems to be good as the lights come on when the brake pedal is pressed (but ready mode does not)
- I've checked a number of fuses
- used and obd2 adapter with torque and it is not coming up with any codes
-Edit-
- 12v battery was replaced last spring and has been maintained
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The 2010 Prius in our garage would not start today. I tried jump starting it with the 12 volt in our van, but the light on our smart jumper cables would not light up on the Prius side even when I switched them around. I followed the manual's five minutes revving and such, but the ready light does not come on in the Prius. There is enough power for the inside lights to come on, but they are dimmed. I'm thinking we left the lights on in the back seat dome area based on what my daughter told me. The car has not been driven for about 65 hours.
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2nd time I've had this problem. With the car turned on "ready light" on, the car will not shift into D. It just stays in park, and yes my foot is on the brake. I've tried to reset by turning the car off, turning it on again and shifting into D, still no luck. By retrying this over and over it finally goes into Drive and away I go. I've had the car for 3months and 5k miles, and this has only happened twice.
The second time occurred when I was stopped by a flagman at a road construction site. Instead of shutting down, I just pushed the park button. The lights were on, the radio playing and my garmin was plugged in and the AC was on, would the high load have caused the problem? When I pulled the plug on the Garmin, the car went into gear on the next try, but I don't know if there is a cause and effect. I finally got it going after about 25 cars had to go around me and the last car was passing me when it finally went into D.
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I noticed on the way home the "ready" light was on the whole time. I've never noticed it staying on before but maybe just didn't pay attention to it. Is it supposed to be on continuously? What exactly is it for?
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My 2005 Prius won't go into READY mode. This has been happening for many times now almost a month. Up until today if I let it sit there for a while (sometimes a couple of hours) it would work eventually, however, starting today it just does not want to go into READY mode. One thing that I have noticed is that when I press the brake pedal the brake lights do not turn on. I have been suggested that it could be the Stop Light Switch that causes it, and one way to check was to perform the following procedure:
(1) Push the P position switch.
(2) Parking brake pedal is depressed.
(3) Turn the power switch from off to on (ACC)
(4) Brake pedal is depressed.
(5) Press and hold the power switch for 15 seconds or more.
According to Vincent if this starts the car then it is the Stop Light Switch but I was not able to start my car even with this procedure (may be I am doing it wrong.
Note: I have checked the 12V battery and it is not the problem.
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I measured battery on my 2007 Prius by MDF, it's only 11.9V, charging is about 14V. When I turn on ACC mode, and Radio is on, I think it shut down the radio after about 15minutes; I cannot put the car in ready mode after it shut down. I have to jump it in order to put in ready mode. Is it my turn to replace this auxiliary battery?
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I have a 2005 prius with 38,160 miles I started it and shut it off and then tried restarting and now does not want to start. The ready light does not go on and the start button becomes orange.
I checked my 12 volt and it gave a reading of 12.2 volts. These are the engine codes that come up:
U0111 comes up twice
C0200
C1259
C1310
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I have a 2010 Prius that I bought in January. No problems until this morning. Here is the situation...
I get in my car, step on the brake, mash the start button and nothing. The green ready light does not come on, no key detected does not come on, nothing. However, if I take my FOB, and place it by the start button, the ready light will come on and it will start.
I thought it could be a battery issue but, this happens with both FOBs...
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3x in the past few weeks it has taken 10 minutes or so to start the car. the ready signal just doesn't come. All the dash lights come on too.
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