Question about 1998 Toyota Tacoma

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Battery light and ABS light

When the battery light comes on, it is only for a moment and my dashboard and headlights get brighter, then the light goes off and all is good. But, at the same time that the battery light comes on, the ABS light comes and stays on even after the battery light goes off. I have had the battery AND alternator tested by O'reilly (Battery tested bad, Alt tested good). Went to Walmart, where I bought the battery and had both tested again (BOTH tested good). Replaced the terminal connectors and I am still having the same issue. Any solutions?

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Make sure all contacts are clean and try to drive it for about 200 miles and it should reset

Posted on Sep 09, 2016

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Hi there:
First things first, you'll need to find out the output voltage from the alternator. To do this, get a voltmeter and measure the voltage @ the batterywith the vehicle running. The measured voltage should be between 13.5 - 14.5V w/ the headlights and defroster on. The ABS light coming on may very be related to the battery voltage being low, but as said, you should find out the battery voltage first.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Posted on Nov 06, 2012

  • Tylor Haugen Nov 07, 2012

    I found out that the voltage regulator in the alternator is going bad so I just ordered another alternator, should solve the problem. Thanks for your input!

  • ZJ Limited
    ZJ Limited Nov 07, 2012

    Well, keep in mind that your feedback is important, I`ll appreciate your time if you leave some testimonial comment about this answer.


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Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS, TPMS and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Anti-lock brake system. TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module. TPMS Tire Pressure Monitor System

Posted on Nov 06, 2012

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SOURCE: Dashboard light

the best thing remove cluster (dash) if connector is install circuit board is broken need to change cluster HOPE IT HELP FIXYA OUR POST THANKS PIERRE

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SOURCE: battery discharge intermittently with brake light coming on too

Check all wiring connections to alternator and battery to insure all are good, if ok it will most likely need an alternator.

Posted on Nov 30, 2008

  • 4 Answers

SOURCE: battery warning light, handbrake light going on and off

You could have a alternator problem. When the alternator stops charging the battery you are running on just the battery. When the battery gets weak a lot of weird things starts happening. Have your alternator tested.

Posted on Dec 30, 2008

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SOURCE: Car is dead but battery is good

You should YES check all Grounds Around Battery B U T Also there are AUX Power Cables that go to the Battery Chase them to see that they have NO corrosion or Breaks. It Sounds as though you have a SIMPLE No Power to Accessories type problem.

Posted on Jan 19, 2009

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If the lights dont go any brighter then this suggests that the alternater needs replacing.

Let me know how you get on or if you need further assistance ok

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