Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I just replaced the 12-Volt battery in my 2014 Prius V and…

I just replaced the...

I just replaced the 12-Volt battery in my 2014 Prius V and it still will not start the engine

Mechanic's Assistant: Have you checked the battery, particularly the terminal connections? Are they corroded?

I don't believe so. It's at the mechanic's shop now, he put in the new 12-v battery, but says it's throwing codes about the HV battery

Mechanic's Assistant: Are you fixing your Prius yourself? What have you tried so far?

No, it's at my mechanic's shop. Like I said, he replaced the 12-volt battery this morning, but it is throwing codes about the HV battery

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Does this connect cost anything?

Show More
Show Less
Ask Your Own Toyota Question
Answered in 6 minutes by:
3/27/2018
Pete
Pete, Auto Service Technician
Category: Toyota
Satisfied Customers: 32,913
Experience: Over 17 years diagnosing and repairing automobiles various makes and models with some training and certifications.
Verified

Hi, my name is ***** ***** I will be happy to assist with this today.In some cases, I may need more info to assist better.I apologize for any delay.
I am here Sundays through Thursdays from around 5 am to 2 pm Mountain time.If you respond and I do not respond back right away I will do so as soon as I can.

Do you know the fault code numbers that it is throwing and if so can you post that code into here for me to see?

Let me know,thanks Pete.

Ask Your Own Toyota Question
Customer reply replied 3 months ago
I'm not with my mechanic right now so I don't know the specific codes. He said that the "P" is lit on the dash and the code is something to do with the HV battery. I fear we may need to have it towed to a Toyota dealer and I really don't have that kind of money. The car was fine until Saturday when I first experienced it not starting, but it started a short time later. Then again on Sunday it gave me trouble starting, but did start like 2 minutes later. Then later on Sunday afternoon, it wouldn't start and the smell of rotten eggs was horrible. Roadside Assistance from AAA tried to jump the battery but only the electric would come on - the gas engine would not engage. It was then towed to my auto mechanic where it is now. Nothing more was done to it other than the jump start.
Customer reply replied 3 months ago
I don't think a phone call would solve anything since I'm not with my mechanic. I was hoping for a quick fix, but I guess I'll just have to wait for the mechanic to figure it out. He says the Toyota dealership are not very forthcoming with information on repairs, even to fellow mechanics. If the dealerships were not so far away and if the did not charge an arm and a leg for everything, I would have had it towed to one in the first place. Thanks for your help, such as it was.

No problem with the phone call.That is an automated feature the web site offers all customers.We can continue here instead.

Unfortunately, if there is a fault with the HV battery or the HV battery electronics this has to be diagnosed and tested by a certified repair person or facility that has experience with the HV battery system on your model.I have unfortunately seen the HV battery fail on its own suddenly causing a no start as without the HV battery being o.k. the computer will disable starting.

The fault codes will have to be read out of all computers using a scan tool or computer plugged into your vehicles data port that can read all computers in your vehicle to see what codes are set with this fault here.Once this is done the code set will then help to diagnose if the HV battery needs replaced or the HV control unit or a relay or any other HV components causing the fault.

Unfortunately, this will have to be done to help in locating and repairing this issue here.If you have no one near you that can look into this it may have to be towed to the nearest dealer or repair facility that can work on it.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service, your 5-star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.I work on delivering the best answer and help here but in some cases, it can be difficult to do without seeing the vehicle.

Thanks Pete

Ask Your Own Toyota Question
Customer reply replied 3 months ago
Thanks for your help, Pete. I will print out your response for my mechanic, but it doesn't look like you could do any more for me and my situation. The car was operating fine until Saturday and we are pretty sure the main cause of the non-start was the 12-volt battery due to the intense rotten egg smell and the electric components not working shortly after a jump. I sure do regret buying this car now, and that is sad because I really did like it until yesterday! Too bad I've already sold my 2003 Toyota MR2 Spyder!

You're welcome

Now if your 12-volt battery ( the old one ) had shorted out it can damage the HV electronics.So having the codes checked will definitely help to diagnose and locate which component is at fault needing repaired or replaced.

Let me know if you need anything else and feel free to rate my help here or above ( should be a link to click on ) as this is how I receive credit for my time, this can be done at any time and you can still come back here and reply if needed.Your 5-star rating is appreciated

Thanks Pete

Pete
Pete, Auto Service Technician
Category: Toyota
Satisfied Customers: 32,913
Experience: Over 17 years diagnosing and repairing automobiles various makes and models with some training and certifications.
Verified
Pete and 87 other Toyota Specialists are ready to help you
Ask your own question now
Customer reply replied 3 months ago
Thank you, Pete. I've sent you a 5-star review. It's not your fault you couldn't help me - you tried.jd

Your welcome and thank you for the review.

Ask Your Own Toyota Question
Customer reply replied 3 months ago
Good Morning, Pete.
Just to follow up, my mechanic found the problem late yesterday afternoon. Apparently, there is some type of plug from the main battery that had worked loose because some slide lock wasn't secure and once he secured everything, the car fired right up. Though it took 2 days to figure it out - in between working on other vehicles that were easier to resolve, I'm very happy with the result. So, I guess nothing further is required.
Janet Dennis

That is great to hear.If you need anything else in the future let me know.

Thanks Pete

Ask Your Own Toyota Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a toyota mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Pete Your Own Question
Pete
Pete
Pete, Auto Service Technician
Category: Toyota
Satisfied Customers: 32,913
32,913 Satisfied Customers
Experience: Over 17 years diagnosing and repairing automobiles various makes and models with some training and certifications.

Pete is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU!

JugheadUSA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Auto Technician

1,104 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

197 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,243 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Anthony

Anthony

ASE Certified Technician

401 satisfied customers

ASE Master Automobile Technician with over 20 years exp. in this field.

Richard

Richard

ASE Certified Technician

9 satisfied customers

Toyota tech. ASE Certified Technician

Skyvisions

Skyvisions

ASE Certified Technician

13,051 satisfied customers

Toyota Master Diagnostic

Genchi Genbutsu

Genchi Genbutsu

Toyota Master Technician

3,761 satisfied customers

Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine

< Previous | Next >

Related Toyota Questions
2007 Prius Techstream codes C1259, C1310 and P0AA6, Exact
2007 Prius Techstream codes C1259, C1310 and P0AA6 … read more
Richard Greer
Richard Greer
Vocational, Technical or Trade School
150 satisfied customers
Looking at a 2011 Prius that runs great, looks great, no
Looking at a 2011 Prius that runs great, looks great, no check engine lights but when I did a full scan on the vehicle I get "C2315 HV System". … read more
MDT-89
MDT-89
24 satisfied customers
After a vacation my 2008 prius wouldn't start. i jump
after a long vacation my 2008 prius wouldn't start. i jump started it. drove it. parked it. then restarted to see if it would start. it did. then the next day it was dead again. removed the 12v batter… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
HV battery in Prius 2006 had a bad cell. I replaced the
HV battery in Prius 2006 had a bad cell. I replaced the cell, balanced the battery, all cells read 7.65 V. reinstalled, car does not start, all check lights are on, red triangle of death too. Car was … read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
I have a 2010 Toyota Prius, with 120k miles on it. Two weeks
I have a 2010 Toyota Prius, with 120k miles on it. Two weeks ago I replaced the 12V battery (it was an alternative battery) … read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
NEED HELP FROM PRIUS MECHANIC WITH ELECTRONIC EXPERIENCE I
NEED HELP FROM PRIUS MECHANIC WITH ELECTRONIC EXPERIENCE I bought an 09 Prius with 106,000 miles at auction of impounded vehicles, like DUI forfeitures. It was not running, and had sustained a bump on… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
The VSC light,check engine light and the red triangle light
The VSC light,check engine light and the red triangle light came on in my Prius. … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,432 satisfied customers
I have a 2010 Prius. This morning it would not start. I must
I have a 2010 Prius. This morning it would not start. I must have a dead battery. Can a Hybrid battery be jumpstarted? … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,432 satisfied customers
I have the HV battery out as I was getting errors and the
I have the HV battery out as I was getting errors and the red triangle of death. I have P3023 showing now after reinstallation and the fan came on almost instantly after the red triangle showed up. … read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
I have an 08 prius that shut down while accelerating out of
I have an 08 prius that shut down while accelerating out of a parking lot. The car will turn on, but the gas engine will not start; the hybrid battery gage is completely empty. A Toyota tech scanned: … read more
Pete
Pete
Auto Service Technician
32,913 satisfied customers
THROWING A C1259 CODE HV SYSTEM REGENARATIVE MALFUNCTION,
THROWING A C1259 CODE HV SYSTEM REGENARATIVE MALFUNCTION … read more
jim
jim
Vocational, Technical or Trade Scho
702 satisfied customers
Red Triangle, 2005 Prius - 223000 miles, It just came on
I haven't checked the oil level yet, but just had it changed about 3 wks ago … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,432 satisfied customers
Error code POA80 on Prius. ABS, Brake and VSC lights on.
2007 Prius with ABS, BRAKE, VSC lights on. Error code POA80 Just pulled code and erased it. Lights still on… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
2005: we just put a replacement battery in our 2005 Prius,
we just put a replacement battery in our 2005 Prius, hooked everything back up and the power comes on but we can only go between park and neutral and the warning light is still on...help… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
Prius: I have a 2002 prius with 37,000 miles on it and it will
I have a 2002 prius with 37,000 miles on it and it will not start. And i've already replaced the hybrid battery and the brake actuator.… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
prius: While driving my 07 prius the warning lights acme on
While driving my 07 prius the warning lights acme on red triangle, yellow circle w/ brackets w/ exclamation points, vsc . after turning it off it would not restart. I had it towed to the dealer who to… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,051 satisfied customers
2006 Prius: meter..put new..serviced..173,000km; the tires are good
I presume that to repair the combination meter in my 2006 Prius will run between$500 to $1000 as I deal with a small dealer and probably that have not done one before. I was going to trade knowing wha… read more
AMD
AMD
Master Automobile Technician
Vocational, Technical or Trade Scho
980 satisfied customers
toyota highlander hybrid: 000 miles..interior, etc..car radio
I have a toyota highlander hybrid with approximately 50, 000 miles on it. I have been out washing the car, detailing the interior, etc., and silly me, listened to the car radio the entire time I was w… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x