Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

The battery light is on. checked the battery and it is ok.

Customer Question
The battery light is...

The battery light is on. checked the battery and it is ok. could it be the alternator ? Is the alternator easy to replace by owner?

Mechanic's Assistant: Have you tested the battery? Have you tried testing the alternator?

Yes, the battery is good. Have not checked alternator.

Mechanic's Assistant: What is the model/year of your Toyota?

FJ 2007, 100,000 miles approx

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

Will try to fix it myself.

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

Alternator indicator shows that it is charging but seems low

Submitted: 4 months ago.Category: Toyota
Show More
Show Less
Ask Your Own Toyota Question
Answered in 1 minute by:
11/28/2017
Toyota Mechanic: Ron Z., - Toyota Tech - replied 4 months ago
Ron Z.
Ron Z., - Toyota Tech -
Category: Toyota
Satisfied Customers: 19,629
Experience: 18+yrs experience. State Inspector and Toyota Diagnostics
Verified

Hi! Welcome to JustAnswer. Thanks for coming! I'm Ron and I'll be working with you on your question today. Please give me a moment to review your question and type out my reply. Sit tight one minute... I'll be right back!

Ask Your Own Toyota Question
Toyota Mechanic: Ron Z., - Toyota Tech - replied 4 months ago

Thanks for holding!

When the the battery light is lit, this is a common sign of a fault in the Charging System. More commonly, this a faulty alternator or a weak battery. There is a quick easy test for this, with the use of a voltage meter. With the engine running (if you need to jump-start the vehicle, make sure to remove the jumper cables before testing), take a voltage reading at the battery terminals. If the voltage is not between 13.2-14.4v, or fluctuates in and out of this area, the Alternator will need to be replaced. If the Alternator passes this test, turn the engine off and wait 15min. Take another reading at the battery terminals, this time with the engine off. If the voltage is anything less than 12v, the battery may have a "bad cell" and is not accepting the alternator's charge. If you do not have access to a voltage meter, most local "big chain" parts stores, like AutoZone, will run these tests for Free right in their parking lot. Make sure to also check the battery cables to make sure they are tight, making a good connection and are free of any corrosion and that the serpentine belt is tight around the alternator pulley at this time.

Replacing the alternator on this vehicle isn't a bad job at all. The Labor Time Guide calls for under an hour to complete the job. Please be kind enough to leave a rating for our Q&A using the 'stars' at the top of the page or click 'Accept' when I have answered all your questions. A 5-star rating is very much appreciated! Rating or accepting my answer does not cost you extra.

Ask Your Own Toyota Question
Toyota Mechanic: Ron Z., - Toyota Tech - replied 4 months ago

..

Ask Your Own Toyota Question
Toyota Mechanic: Ron Z., - Toyota Tech - replied 4 months ago

Were there any other questions I could help you with today?

Ask Your Own Toyota Question
Toyota Mechanic: Ron Z., - Toyota Tech - replied 4 months ago

..

Ask Your Own Toyota Question
Toyota Mechanic: Ron Z., - Toyota Tech - replied 4 months ago

HI! I noticed this Q&A was still open and you did not leave a rating, so I wanted to check in and see if there was anything else I could do for you on this? Any other questions you had? If you have no further questions, Please be kind enough to leave a rating for our Q&A using the 'stars' at the top of the page.

Ask Your Own Toyota Question
Was this answer helpful?
Ask Ron Z. Your Own Question
Ron Z.
Ron Z.
Ron Z., - Toyota Tech -
Category: Toyota
Satisfied Customers: 19,629
19,629 Satisfied Customers
Experience: 18+yrs experience. State Inspector and Toyota Diagnostics

Ron Z. 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

1,001 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

180 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,229 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

12,737 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
Change battery and alternator but still won't start. 2011
change battery and alternator but still won't start … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,018 satisfied customers
Alternator not charging the battery. I've replaced the
Alternator not charging the battery. I've replaced the alternator and replaced the battery along with new battery terminals. After having to jump the battery to start the car, I used a multimeter to t… read more
Todd Green
Todd Green
Associate
3 satisfied customers
Accidentally Pulled out the wires on my alternator pigtail -
Accidentally Pulled out the wires on my alternator pigtail - bought a new pigtail but don't know which wire goes where … read more
Todd Green
Todd Green
Associate
3 satisfied customers
I had a wire come loose on the alternator which had a Ark.
I had a wire come loose on the alternator which had a Ark. The Ignition will not start no lights on the - - Dash --headlights come on … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
2010 Toyota rav4 v6 alternator removal. Alternator is loose,
alternator is loose, removed the 2 14mm bolts. Still cannot free rear fins. tried crow bar, space is limited. … read more
Ron Z.
Ron Z.
- Toyota Tech -
19,629 satisfied customers
91 Toyota starts and runs, but alternator gauge stays at
91 Toyota starts and runs, but alternator gauge stays at zero and if I leave key in ignition and off battery goes dead … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
I was checking alternator and forgot to undo battery and the
i was checking alternator and forgot to undo battery and the positive wire from alternator sparked. now i don't have wiupers, brakelights or radio etc. … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
2006 Tacoma. I swapped out the alternator last week. Now my
2006 Tacoma. I swapped out the alternator last week … read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,155 satisfied customers
2007 toyota sequoia 4.7 not charging Replace alternator and
2007 toyota sequoia 4.7 not charging Replace alternator and check all the fuse relaté to alternator they are good, I start the car and charges a bit and afther one minute just battery oltage and batte… read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
457 satisfied customers
Trying to change alternator fuse. Having a time getting the
trying to change alternator fuse JA: Okay, I'll connect you to the mechanic to go over that information regarding your Toyota. Before I do, is there anything else you want him to know? Customer: havin… read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,155 satisfied customers
Scion xa replaced alternator belt due to squealing. It was
scion xa replaced alternator belt due to squealing. It was fine then squealed again, tightened it right away and it was fine. Now it is squealing again and is as tight as it can go. Now what?… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
We changed the alternator in our 2008 Highlander. At the
We changed the alternator in our 2008 Highlander. At the same time we lost our spare key fob. Shortly afterwards the factory alarm (horn) started sounding randomly. The car will be sitting in the lock… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
New alternator, etc. Charge and brake light when truck is
New alternator, etc. Charge and brake light when truck is running … read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
12,737 satisfied customers
Alternator was tested and is good. I changed the battery.
Alternator was tested and is good. I changed the battery. The car will run about 15 minutes and drains the battery. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,018 satisfied customers
I changed the alternator and now the windows don't work. And
I changed the alternator and now the windows don't work … read more
XtraTech
XtraTech
Sr. Technician
Bachelor's Degree
149 satisfied customers
Replaced alternator and battery, no dash function and will
replaced alternator and battery, no dash function and will not go into gear. no wipers, radio or heater. only things that work are headlights and dome light. … read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
12,737 satisfied customers
My alternator isn't charging my battery. Had the alternator
My alternator isn't charging my battery. Had the alternator tested but it still passes, fuse for the charging system isn't blown. … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
1989 Toyota pickup. 22RE engine. Water pump/alternator belt
1989 Toyota pickup. 22RE engine. Water pump/alternator belt keeps breaking. Something is locking up but after the belt is broken everthing turns fine. How can I tell if it is water pump or alternator?… read more
Todd M
Todd M
Owner
ASE Certification
1,705 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