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2005 mercury montego AWD. Replaced both wheel hub assemblys and now the ABS and TRACTION lights are on. Also it says to check traction control.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Hentie
  • 18 Answers

SOURCE: after replacing the left front wheel bearing on a 2003 ford focus, the abs and traction warning light stay on

The bearings on the wheels has to be installed one way only, the rotor ring is built into the bearing and if installed the wrong way round the sensor cant pick up the wheel speed causing the ligt to be switched on in the cluster. The diagnostic equipment should pick this up as a fault once the car has been driven, it will see the sensor when you do the diagnostic if the car is standing still but once the car is moving and no signal is send from that wheel it would register a fault into the memory of the PCM that you would be able to retrieve later.
There is a way for you to test the sensor yourself by using a multimeter set on volts, you jack the vehicle up at that wheel, install a vehicle stand to support the vehicle to be safe, disconect the wheel speed sensor and probe the two wires into the sensor, spin the wheel by hand and a small amount of current will be produced meaning the the sensor is working and the wheel bearing is installed the correct way, you can also do a continuaty test on the sensor by switching the multimeter onto ohms, but be very carefull, if this sensor has three wires you cant do the continuaty test because of the integrated circuit in the sensor, the three wire sensors opperate on a voltage from 5Volt and it would be destroyed by the multimeter opperating on 9Volt.
If the continuaty test passes and the bearing is installed the correct way, the most comon fault would be a break in the wiring leading to the PCM
Hope this will be helpfull.

Posted on May 04, 2009

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  • 401 Answers

SOURCE: abs and traction control

hi if you know for sure it's a wheel speed sensor
remove that wheel
remove the caliper and caliper bracket
remove the brake rotor
there are 3 bolts on the other side of the knuckle(13mm)
remove them
remove the axle nut(1 5/16)
remove the hub bearing assembly(you may need to use a hammer on the hub flange)
hope this helps

Posted on May 25, 2009

  • 1 Answer

SOURCE: 2002 Chevy Impala Traction control /ABS problem

i have a 2002 chevrolet impala and the same thing happened to me. abs light came on as well as my traction controll light. when i would step on the gas or brakes my car sounded like the brake pads were skiping against my rotors. i had my hub sensor replaced 5 times. the machanic kept telling me it was the part that need to be replaced.they hooked it up to have a dianostic done and the computer keep telling them to replace the hub sensor. so finally we brought my car to an electric auto shop. they found it was a loose wire that was turning my brakes on and off.(haywire)they fix my car in 30mins.

Posted on May 27, 2009

  • 3 Answers

SOURCE: abs and traction control light faults after a brake job. 2005 Pontiac grand prix

a quick test is to disconnect the sensor connector hook up and ohm meter to the sensor connector on the hub side not the engine side and spin the hub if the resistance rises and falls you're most likely ok if the resistance reads 0 or infinite you have found the bad sensor..this won't always be the case but it's a good start in the right direction

Posted on Jul 22, 2009

  • 1 Answer

SOURCE: 03 Yukon Denali Traction Control/ ABS Problems

my 2000 yukon has the traction control light on and the abs light on any anwsers?

Posted on Nov 28, 2009

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I own the 2002 Buick Rendezvous CX and I've encountered the same problems listed here. The ABS / Traction Control Lamp stays on and was throwing a code for the left wheel speed sensor as well as an anti-lock brake code (both in the wheel bearing hub assembly). I replaced the left and right front wheel hub assembly yet this did not eliminate the abs codes. 
Ultimately, I traced this problem to a break in the wire that leads to the left hub assembly. Although the sensor was properly connected, the wire (which is encased in a plastic housing) was broken. This is the wiring which leads from the abs wiring harness under the hood down to the left wheel abs sensor. 
I would suggest that you simply remove the left wheel and inspect the wire that leads to the abs sensor (there is only one wire on each wheel). Mine literally fell apart when I removed the plastic housing around the wire. I spliced the wire together and put it back in the plastic housing. After this, my abs codes disappeared and my anti-lock brakes began working again!
This is a simple fix that many people spend $1000 + on by replacing the hub assembly which does not fix the problem.

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