ABS on after mudding..what's up?

[XMAN]

Twice now when in the mud my ABS light has come on. It goes off after the engine has been cut off for awhile. What causes this?

 

[zukirider21]

perhaps the tone rings are plugged up with mud?

 

[85_Ranger4x4]

If one wheel spins faster for so long than the other one it will confuse the computer and it will throw the light on. I did it trying to get thru a little a foot of snow in my driveway last December (Christmas Day actually) in my F-150.

 

[Snowboarder7710]

the tone ring on mine was full of gunk on the pass side...it would cause my abs light to turn on...get up under the truck and jack the front end up...spin the tire and see the ribbed section on the brake disc....make sure that theres no mud clogging the ribs up.

 

[sloth69mustang]

i got sick of my abs light coming on bc of that so i just took the abs computer out and threw in the trash i grew up driving 4 wheel drum brakes. i am happy just having 4 wheel disc now. lol

but yes it is mud caked inside the tone ring. the abs sensor has to read a tooth and it cant read a tooth on a smooth surface lol

 

[Original_Ranger84]

I thought ABS worked on magnetic pickup? and would work just fine with mud in it as long as mud wasn't over the end of the metal fins?

Abs is useless in pretty much every situation... but its Super nice in the winter on solid ice.

 

[adsm08]

ABS does use a magnetic pickup, and can read a smooth surface tone ring if its been packed with a non-magnetic material.

In most areas there are enough magnetic mineral compounds in the soil that if you get the tone ring packed with mud it messes with the signal.

 

[XMAN]

Thanx guys, I'll check it out. The ABS light was on for about 5 years on my last F-150 ...never did find the problem,so when I saw this I thought DAMN! We just got 3" of snow and supposed to get another 4" tonight, which is a big deal in Nashville.