How JustAnswer Works:

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

Ask Skyvisions Your Own Question

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 13077
Experience:  Toyota Master Diagnostic
8257649
Type Your Toyota Question Here...
Skyvisions is online now
A new question is answered every 9 seconds

Toyota Lexus LS400: Hello again. I just replaced the front

Resolved Question:

Hello again. I just replaced the front headlamp drivers side main beam. After I replaced the battery, the car did not receive back any power at all. The main fuse appears to be have no power. when I turn the ignition key--nothing. Any ideas of what could have gone wrong? One stupid thing I did was to leave the ignition key in the on position when I pulled the battery so it was still in on position when I re- hooked up the power. Is there a system reset button somewhere?
Submitted: 1 year ago.
Category: Toyota
Expert:  Skyvisions replied 1 year ago.
Thank you for choosing JustAnswer and allowing me to help you resolve your Toyota questions! There is no system reboot or reset. Having the key in the on position itself should not have caused the problem. At any time was the battery cable installed backwards or perhaps charged backwards?
Customer: replied 1 year ago.

No, the battery is showing a full charge, and my charger goes crazy when you try to cross charge it. Because the pos cable is connected to the battery cover, you can't hook up the battery backwards. I tested the power at the cables next to the battery and they are showing 12.25 volts. I will say that lately the connection with the gearshift has been a little loose in that you have to push it sometimes to get a power connection.

Expert:  Skyvisions replied 1 year ago.
Am not sure where to go with this one. You're going to have to check for power at all of the fuses and double check your connections at the battery cable ends.
Customer: replied 1 year ago.

Ok I just discovered the main fuse panel under the hood behind the battery! I was testing the small fuse panel inside the car on the drivers side. I notice there is a line of fuses on the left side of the panel, and one says "main" and is 80A. It does not appear to be blown, but I tried to lift it out, and it doesn't want to come, so I guess it removes some other way. I thought I would test the pins to that fuse to see if power is getting to the "main". Any other suggestions of what to test on this fuse box to see if power is getting to it?

Expert:  Skyvisions replied 1 year ago.
That 80 amp fuse is bolted into the fuse box do not tug on it to hard or you will break it. If you pop the plastic cap off the top and touched the copper band with your test light it should have 12 V if it does this means the main battery box or fuse panel is receiving 12 V from the battery. Are you 100% certain that the connections to the battery are not corroded or loose?
Customer: replied 1 year ago.


Ok I took off the connectors to the battery, and they were slightly corroded and I sanded and wire brushed everything. I tested the main fuse again and nothing. In fact I tested the input wire to the fuse block, and it is dead as well. Is there a connector under the engine as the main pos wire from the battery goes down there, and then the wire to the fuse block comes back up. Somewhere in between the wire leaving the battery with power and the wire coming into the fuse block there appears to be a break.

Expert:  Skyvisions replied 1 year ago.
The main battery positive cable goes down to the starter. It breaks off of the main battery harness and goes up to the junction block. Make sure there's no corrosion down inside the main wire coming off of the battery cable and itself.
Customer: replied 1 year ago.


If I have to replace a wire, do you know what gauge it should be?

Expert:  Skyvisions replied 1 year ago.
The one going down to the starter is a 1 gage or 0 gage.
Customer: replied 1 year ago.

and the one coming back up to the panel? I guess I should jack up the car and test the lead to the starter and see if that is live first? I wonder if I should put a lead from the positive side of the battery to the panel feed point and see if that energizes the car?

Expert:  Skyvisions replied 1 year ago.
The wire going up to the fuse block is about a two or 3gauge. I would try jumper wire to the 80 amp fuse from the positive battery terminal and see if it energizes the systems in the car.
Customer: replied 1 year ago.

Yes I jumped a main wire from battery pos post to the feed post on the fuse block, and that solved the problem. Thanks for your help!

Expert:  Skyvisions replied 1 year ago.
You are welcome. Glad to help.
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 13077
Experience: Toyota Master Diagnostic
Skyvisions and other Toyota Specialists are ready to help you

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! Jughead USA
< Last | Next >
  • 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! Jughead USA
  • 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, 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. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    167
    ASE & Bosch Master Tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    Toyota Technician

    Satisfied Customers:

    1132
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/CA/caprio23/2014-4-30_201741_20121205122939.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    373
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    9
    Toyota tech. ASE Certified Technician
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    11403
    Toyota Master Diagnostic
  • http://ww2.justanswer.com/uploads/genchigenbutsu/2009-05-09_003043_cimg16431.jpg Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

    3425
    Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine
 
 
 

Related Toyota Questions