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Why does an abs light come on?

Updated: 10/20/2022
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Wiki User

11y ago

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The ABS (anti-lock brake system) light comes on because the computer has detected a problem and set a code. The code will stay in the computer even if the light goes out. You need to have the system Scanned for codes. Once the cause of the code has been repaired the light can be shut off by clearing the code.

Most auto repair shops will have Scanners and all the equipment to Diagnose and repair the problem. And, Most auto parts stores can plug in a diagnostic scanning device into your vehicle to read the trouble codes at no cost if you purchase the parts necessary to repair the vehicle from them. The trouble codes can tell you THE AREA where the problem is with your ABS system. So it's wise to have a Tech check that circuit to isolate what the problem actually is.

In order to reset this light you need to have access to a Scan tool that does more than just read the codes. Other diagnostic equipment may be needed as well.

You have a problem with the ABS. As long as the light is on the ABS is not working. The light will remain on until the problem is fixed.

AnswerThe ABS system has stored a fault code. You'll need to have someone scan the ABS computer to read the diagnostic code. Typically, ABS codes are not available to inexpensive conventional OBD scanners.

ABS = Anti-Lock Brake System

If you have this light come on while not braking, it most likely means there is a problem with the electronic controls in your brakes. If it comes on while you are braking, it means the Anti-Lock has kicked in. It should only do that however, if you are braking really hard. Addendum: It is very important to have the above procedure done to diagnose the cause. It might be minor but it could be as important as a wheel bearing, and a cracked hub, which if damaged could cause the wheel to become loose and you could lose control. I've added this addendum because I was told by a mechanic not to worry about the ABS light, that it was a minor problem. Only to find out later that in many vehicles the ABS sensor is attached to the wheel hub and a malfunctioning bearing can cause the sensor to slip., causing it to turn on.

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Wiki User

11y ago
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Anonymous

Lvl 1
3y ago
This is scary
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Sandra Iholditdownon...

Lvl 2
4y ago

That’s what I’m wondering why do ABS light comes on

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Q: Why does an abs light come on?
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