Anti Lock brake light comes on

[Mike Yatkowitz]

Over the last two weeks, my anti lock brake light has been coming on. Once I turn the car off and start it up again it goes off, any comments on what i should check?

 

[Mrlunchbox]

Mine started making a slight grinding noise on the drivers front wheel. I assumed the brake pads were due. Couple of days later I had the same issue with the ABS light. I figured that the pads were bad and that was the issue (grinding was worse). Upon beginning the job it turned out that my wheel bearing was bad. After I replaced that no more ABS light issue. The ABS sensor and wheel bearing is one unit so maybe check into that? It may not be that at all, but I would assume that some sensor is bad as it comes on within several seconds of driving.

 

[Mike Yatkowitz]

Thank you Mrlunchbox I will look into it this weekend

 

[Kevin Palmer]

Bad hub bearings are a common cause of the ABS light.



That said, the best thing to do is to go get the code pulled and then we can help you MUCH better.

 

[Mike Yatkowitz]

Will do

 

[Mike Yatkowitz]

CoasieJoe, there was no code stored in the computer.

 

[Kevin Palmer]

There should be a "historical" code even if the light has turned off.



It will not clear until something like eight cycles where there is no issues.



I can tell you that it is common for the rear sensor to fail as well as the front sensors to trip the light due to a defective hub bearing. As the hub bearing fails, it seems to trip the light.



Without a code, all we can tell you is the law of averages.

 

[scott degroot]

MIKE Y ,5/13/2010 16:58 MT



CoasieJoe, there was no code stored in the computer.

That's because you are looking in the wrong computer. You have to check the abs module for codes.

 

[Kevin Palmer]

I thought that myself, but thought - Nah,,, he wouldn't do that would he???

 

[Mike Yatkowitz]

Wanna bet, how do you check the ABS module for codes?:banghead:

 

[scott degroot]

You have to have a scanner that is capable of getting into the abs module

 

[Mike Yatkowitz]

This is still run through the same ECM port under the dash?

 

[scott degroot]

Yessir

 

[Mike Yatkowitz]

Ok, i'll have to get a better scanner! While rotataing my tires today it was a perfect time to look at the brakes. Brakes are pretty low, I kknow what I'm doing next week.:angry:

Thanks for the info.

 

[Mike Yatkowitz]

Update, Thank you all for your input, had my friend scan the puter and it came up with a bad R/F sensor. So I repalced all the brakes cut rotors and drums and replaced the two front bearings which came with new sensors.

Next time I get this motivated I will switch the rear drums to disc.:banana::banana::driving: