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 sprinkles08 Your Own Question
sprinkles08, ASE Certified Technician
Category: Nissan
Satisfied Customers: 22275
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
Type Your Nissan Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

Battery and brake warning light remain on after start up,

Customer Question

battery and brake warning light remain on after start up
JA: Have you checked the brake fluid? Does the light stay on steady or is it intermittent?
Customer: yes its good and battery is less than 3months old
JA: What is the model/year of your Nissan?
Customer: 08 max over 190,000 miiles
JA: Are you fixing your 190 yourself? What have you tried so far?
Customer: read the manual, which state belt loose broken are missing. Don't have correct tools to fix
JA: Anything else you want the mechanic to know before I connect you?
Customer: Is this a few service or I'm I to be charged for the answer
Submitted: 7 months ago.
Category: Nissan
Expert:  david craig replied 7 months ago.

hi im david, if your belt is not broken then it appears you may have an alternator problem. do you have a multi meter to check voltages?

Customer: replied 7 months ago.
but here is another problem for me. All I wanted was a one time answer. No monthly subscription, if this is your suggested fix
Customer: replied 7 months ago.
Would this cause the rpm's to rev up to 4000 when AC is on. Happen sometime going down hill and on straight away
Customer: replied 7 months ago.
David I need and answer very soon to get my car over to dealer
Expert:  david craig replied 7 months ago.

no it would not.

Expert:  david craig replied 7 months ago.

different issue

Expert:  david craig replied 7 months ago.

i could be a throttle position sensor. is the check engine light on?

Expert:  david craig replied 7 months ago.

if you have a meter, check voltage at the battery with the car running. should be 14.4vdc if the alternator is working.

Expert:  david craig replied 7 months ago.

ill be back on in about an hour. got to get to my shop.

Customer: replied 7 months ago.
This is not working for me. Taking to long to get answer. My car is needed in my business, and I must get it working today.
Expert:  david craig replied 7 months ago.

3 minutes is too long? aRE YOU KIDDING ME?

Expert:  david craig replied 7 months ago.

youve ask about more than one problem. this is a one question deal. not 2 or 3 or 4

Expert:  david craig replied 7 months ago.

you need to focus on the original question. i have no problem helping you with that, but you need to work with me

Expert:  sprinkles08 replied 7 months ago.

Hello and welcome to JustAnswer!

You have at least a couple different issues going on. It's going to take some electrical testing to determine the causes of the problems.

The brake light could be one due to low fluid, a bad fluid level switch, the emergency brake may have been accidentally partially set, the emergency brake switch may be bad or it's circuit could be shorted to ground. It's also possible that the ABS module is illuminating it due to an ABS issue.

The battery light is on due to over or undercharging, the most likely cause for a battery light is a bad alternator.