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Anonymous Posted on Dec 17, 2017

03 Bonneville brake light and antilock and traction control lights stay on

Checked sensors at wheel bearings cleaned and put dielectric grease on them with no luck

1 Answer

Lawrence Oravetz

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  • Cars & Trucks Master 10,558 Answers
  • Posted on Dec 17, 2017
Lawrence Oravetz
Cars & Trucks Master
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Joined: Jul 28, 2008
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You need a code reader with the ability to reset ABS systems to make the antilock light go out. The brake light may be due to an improper bleeding procedure.

Testimonial: "Thanks for the help, however it has been reset and the problem continues"

  • Lawrence Oravetz Jan 01, 2018

    You have to be sure the wires to the sensors are not open. It only takes one. A sensor may be bad too. Check the sensor connections for corrosion, abrasion, and shorts. A code reader might tell you what the problem is

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5 Related Answers

Ray Keckeisen

  • 599 Answers
  • Posted on Apr 08, 2009

SOURCE: abs , brake, traction control light on in 04 lesabre

check to make sure that all the the bulbs in the rear are working,even the third light

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Anonymous

  • 18 Answers
  • Posted on May 04, 2009

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.

Anonymous

  • 88 Answers
  • Posted on May 21, 2009

SOURCE: abs and traction control light

have to ask is the relucter for the abs sensor on the axle or rotor

Robert Debison

  • 412 Answers
  • Posted on Aug 31, 2009

SOURCE: I have a 2003 dodge Caravan,no abs/traction, but

YOU NEED TO HAVE THE LEARNED FEATURES OF THE INSTRUMENT CLUSTER RESET..NEEDS TO BE DONE WITH A SCANTOOL..IT IS TECHNICAL SERVICE BULLETIN FROM CHRYSLER..RECOMMEND YOUR LOCAL DEALER DO IT

Anonymous

  • 1 Answer
  • Posted on Nov 28, 2009

SOURCE: 03 Yukon Denali Traction Control/ ABS Problems

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

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2helpful
2answers

My traction control light and anti lock light popped on today and now the brake light popped on. i read the manual and it says to switch the traction control button back to on but i can't find it

I think your traction control button is on the center console behind the Shifter.
But, I don't think that is the problem. That switch will cause the traction control and light to turn on and off. It should not affect the brake light and anti-lock light.

I would first check your brake fluid level. Top it off with the correct fluid. The fluid is a DOT number; like DOT3 or DOT5. Use the correct DOT fluid.
If the fluid is very low, you may need your brake fluid system bled to remove any air. And you may want to check the brake pads. Low fluid may mean you need new pads.

If that doesn't work, go to an auto parts store that will scan your car for ODB2 error codes. AutoZone will do it for free. I suspect you may have a bad wheel bearing. That will cause the ABS and Trac lights to go on. I've replaced GM bearing/sensors on several of my cars. The last one was my 2005 Bonneville. The bearing and sensor are combined in one unit.
6helpful
1answer

I have a 02 Cavalier that when your driving the Trac off light comes on when the light is on it runs rough and shifts hard but if i put it in park turn it off and restart it it's fine

There is a malfunction in you antilock brake/traction control system. When the TRAC light is on, the computer is trying to tell you either 1. That the traction control is active and is controlling your brakes, engine and transmission to stop a wheel skid, or 2. There is is a malfunction in your traction control system.

In the first case above, the TRAC light will only be on for a few seconds until the conditions causing your wheels to slip no longer exist. If the light is staying on even though there is no way your wheels are slipping or skidding, then this is a malfunction. You must scan both your Powertrain Control Module (PCM) and your Antilock Brake System (ABS) module to properly diagnose a problem with this system.
6helpful
1answer

My trac light is on, on the dash board. Where is the wheel sensor located ?

Your vehicle is equipped with 4 of them. They are located at each of the 4 wheels. There are other reasons that the Traction Control light can come on...wheel speeds sensors are not the only reason, athough they are the most common. The traction control system works with the engine/powertrain control system and with the antilock brake system. A bad wheel speed sensor will usually also turn on the Antilock Brake (ABS) light. If the Check Engine light is also on, you could have an engine control problem causing the Trac light to come on.
.
If the Trac light is on by itself, you may just have the traction control turned off. The Trac Off switch is located on the steering column.

If none of the above solves your problem, then you will have to scan your computer system to find out why the light is on. ( i.e. failed wheel speed sensor...but which one?)
0helpful
1answer

The antilock brake light on the dashboard will not go off.

If this car is older it is most likely a wheel sensor. GM put abs sensors on all four wheels built into the wheel bearings. If one of these sensors goes bad, your abs light, as well as traction control ( if equipped) will shut off and show low traction. Unfortunately, to figure out which one is bad, you need to have your car put on a chassis computer
3helpful
3answers

Abs and the traction control off light is on

Each wheel has a sensor on it which tells the abs system that your wheel is rolling and lets the cpu know if there is any difference in speed between them. Most likely you damaged one or more of them when you did the work. Check the wiring going to the sensors, if it's not that, then you either need to bring it to a dealer or live without abs and traction control. (abs and traction control work from the same sensors).
3helpful
2answers

Antilock, braction, traction lights on the dash

It is none of the speed sensors.The 1214 is system contact or coil open.The 1248 is for the ebcm turned light on.These 2 are for the electronic brake control module.The 1245 is for the low tire pressure.And the 1287 is for the steering wheel position sensor.What you should do first is clear the codes and road test the vehicle.When the light comes back on check and see what codes came back.The electronic brake control module is for the antilock brakes and the traction control.When you get the codes after driving the vehicle post back with them and I can help you with whatever codes you have.Good luck.
1helpful
2answers

What sensor lights will come on when a wheel bearing goes bad in a 2001 buick century custom

Hello mobrien.
Depending on what your car is equipped with. Antilock brake systems work in conjunction with traction control.So if the antilock system has a fault, traction control will also default system off. It may also turn on low pressure in a tire if your car has that feature.
In the bearing/hub assembly on your Buick there is a sensor ring that rotates with the axle. A sensor is positioned close to that ring to read wheel speed.
A failed bearing doesn't necessarily damage the sensor, nor will a bad sensor mean the bearing is bad. But on your vehicle if one fails the assembly must be replaced as a unit.
I hope this answers your question.If you have another leave it in a comment and I will answer you.

KL
0helpful
1answer

Traction control, brake, and Antilock lights...

it is from a bad wheel speed sensor.The abs, traction control and other systems use the sensor.the various codes are for various system failures.The root cause is the sensor.
10helpful
3answers

03 Yukon Denali Traction Control/ ABS Problems

my 2000 yukon has the traction control light on and the abs light on any anwsers?
16helpful
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Antilock brake /trac off light stays on...140000 miles

In those cars, the wheel speed sensor is integrated into the wheel bearings. When one of the sensors goes bad, you have to replace the entire wheel bearing. Also, when the sensor(s) go bad, it will cause the loss of anti-lock braking and disable the traction control system.

The only way to identify which wheel bearing it is, is to hook the car up to a scan tool capable of reading ABS codes. That said, the front ones are more notorious for going out than the rear ones.
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