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My car's brake and battery light turned on at the sane time. So I took it to sears auto to get it check. They said it wasn't the alternator but the battery was bad. When they checked their system it s

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  • Cars & Trucks Master
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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 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 Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module

Posted on Oct 30, 2012

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Posted on Jan 02, 2017

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SOURCE: possible bad alternator?

I went through three alternators before we found a good one for our saturn sl2. Now she has been good for two years. All I did was go back to where we bought it from, they hooked up the alternator to a machine and gave us a new one when it read that it was faulty.

Posted on Apr 13, 2009

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SOURCE: 2002 Kia Sedona new battery & alternator car dies while driving

hey buddy the same that happeanto me, its your alternator dont make any one give you the run a around alternator for sure. i got my alternator from gb500 it cost about $160.00 after tax.

Posted on May 20, 2009

emissionwiz
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SOURCE: Battery AND Alternator?

I have seen up to 8 defective rebilt alternators, so it is very poss.

Posted on Jun 25, 2009

  • 122 Answers

SOURCE: replaced alternator and battery, car still wont start.

My honda had a similar problem, however, it would not start at all. I checked everything, starter,battery, and even replacing relays, nothing worked. I ended up replacing the ignition switch. this is about a 50.00 part. You will need to remove some of the dash on the driver's side, 4-5 screws on the steering column to expose the switch. there are 2 screws that are visible and one that is hard to reach on the back side, however can be taken out with a small wrench (6 MM I believe). there are two wire harnesses that will need to be removed in order to get to that last screw. then re assemble as you have taken apart. When re assembling the plastic on the steering column, be careful to make sure that you align correctly or you will get a clicking noise every time you turn the wheel. total time period to do this is about 4 hours. Good Luck!

Posted on Sep 20, 2009

fordfixer
  • 58 Answers

SOURCE: Ford 2003 Expedition EB. Check Charging System

Its probably the alternator. It will need to be tested on the vehicle with the engine running and the light illuminated. Measure the battery voltage with the engine running. It should be at least 13.5 volts. If it is lower have the alternator tested at a shop with a charging system tester.

Posted on Feb 27, 2010

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1 Answer

I have a 1995 poniac bonneville and every time i press the brakes the gauges drop. Battery is good. Alternator good. Lights dim and some time kills my car


the brake lights will not kill a car or dim lights so there is a massive short in the system or the battery is not as good as stated
check for battery terminals ( posts and terminals) are shiny clean and tight including the ground wire for the battery
have the battery load tested ( not voltage tested )
check the alternator output ( auto electrician ) check the drive belt is in good condition and tight

Oct 21, 2015 | Cars & Trucks

1 Answer

Brake battery light


If these lights are staying on then I would assume that the alternator isn't charging.

Get the charge rate checked and an auto electrician to replace or service the alternator

Nov 11, 2013 | 2002 Kia Sedona

2 Answers

I have a 92 nissan sentra and the battery/brake light comes on after about 10 min. driving if i'm not doing freeway driving. Then will go off after a minute or so of freeway driving and stay off. Then...


check brake globes are ok could be filament broken that is touching and then not touching inside the globe. Also check brake fluid level in reservoir in engine bay . Could be low brake fluid may have a problem with the brake master cylinder .

Aug 04, 2017 | Nissan Cars & Trucks

1 Answer

How can i tell if the battery or alternator is failing?


Get a cheap digital voltmeter. Check the voltage at the battery. Start the vehicle, checking voltage at battery. It should be greater than when the vehicle wasn't running. With vehicle running turn on the lights and heater blower, does voltage stay up or go down? Voltage should be at least 13.5 volts with the motor running. If the voltage goes down when the lights and heater are turned on then the alternator is not charging enough. If the voltage is up (13.5 or more) with it running and it will not start after sitting a short time then the battery is probably bad. Or go somewhere like Auto Zone and they will normally check it for free!

Aug 11, 2012 | 1991 GMC Sonoma

1 Answer

I have a 1998 montero sport. my lighs started getting real dim, windows go down slow and my anti lock brake came on then the car died. it was almost like the battery was being drained. i made sure...


Presuming the alternator to be okay, the next logical source for your problem is the alternator voltage regulator. The alternator voltage on cars of your vintage is usually controlled by the engine management computer. The problem could also be in the wiring between the alternator and the battery or between the alternator and its regulator. The one thing for certain is that your problems are all created by the low voltage condition that indicates that no power is coming from the alternator to run the vehicle's electronics. Contrary to popular belief, the alternator does not charge the battery, rather, once the vehicle is running the alternator powers all of the equipment.

Jul 19, 2011 | 2001 Mitsubishi Montero Sport 4WD

3 Answers

Brake light and battery light come on at the same


Having the same problem myself, don't know if it is wiring problem or not. Cleaned the battery terminals; seemed to help temporarily but may be alternator problem. The truck has an oil leak and I'm wondering if that may be affecting the belt. I love the truck but it sucks at night when the the headlights dim. Will let you know if I figure it out.

Feb 01, 2010 | 1988 Toyota Pickup

1 Answer

1984 volvo battery light is on


CHECK BATTERY VOLTAGE. IT SHOULD BE 12.5 VOLTS. IF NOT CHARGE BATTERY HAVE IT LOAD TESTED FOR DEAD CELLS. MAKE SURE BATTERY CABLES IS CLEAN AND TIGHT. FREE FROM CORROSSION. NOW IF BATTERY CABLES IS THE ORIGINAL CABLES. REPLACE THEM. NOW CHECK THE ALTERNATOR OUTPUT. USING A DIGITAL VOLT METER.IT SHOULD BE 13.5 TO 14.5 VOLTS.WITH CAR RUNNING IF NOT REMOVE ALTERNATOR HAVE IT CHECKED OUT AT AUTO ZONE OR ADVANCE AUTO PARTS .BESURE TO TURN OFF RADIO.BEFORE REMOVING NEGATIVE BATTERY CABLE.BECAUSE IF YOU DONT.YOU WILL LOSE RADIO CODE.AND RADIO WONT PLAY WHEN YOU TURN IT ON.

Aug 04, 2009 | 1995 Volvo 850

4 Answers

2002 Kia Sedona new battery & alternator car dies while driving


SOUNDS LIKE U HAVE A DEFECTIVE ALTERNATOR.IT WAS CHARING WHEN IT LEFT THE SHOP SO THERE IS NO WIRING ISSUE.BAD ALTERNATOR

May 06, 2009 | 2002 Kia Sedona

1 Answer

Brake and Battery light both just came on today.


Check the fluid level in the brake reservoir. The sensor in it may be detecting low fluid. This usually means you need a brake job since the rotors/pad/shoes have worn down.
The battery light may be caused by the alternator not charging. Check the drive belt - it could be loose. You can get the charging system check at Sears and some auto parts stores. Call around.

Apr 14, 2009 | 1996 Nissan Sentra

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