Question about 2003 Cadillac Deville

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On the dash the brake ,abs and traction lites on my 2003 deville all illuminated at the same time. all the systems appear to be working normally. any hints

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  • hsherry2628 Jul 08, 2010

    the solution was abig help. thanx

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Hi

There is a problem with the ABS system. It is part of Traction Control. If the ABS is not working then the Traction Control is not working. The 2 systems work together. As you found out the trac light turns on first and then the ABS light turns on not because it also has a problem but because they work together when the car needs to stop. For example when you need to stop suddenly the front end will drop down. When the traction control is working correctly it will allow less dip and if you were on a slick surface such as ice, snow or water provide better vehicle handling so the car is less likely to spin out of control.

It is suggested to take the car to your mechanic and have the codes read and that should lead to the fix. But concentrate on the traction control code. Better yet they should clear the codes and then go for a drive. As soon as the trac light turns on pull over and see what code is set and then they will know what to look at.

However lights usually come on when there is a system fault. Check for a broken or chipped wheel speed sensor ring, or a damaged wheel speed sensor. Try disconnecting the negative battery terminal for a few seconds to reset lights

Let us know if you have something more to know else accept the suggestion.
Thank You for contacting Fixya.com

Posted on Jul 05, 2010

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ABS LIGHT AND MODULE TROUBLESHOOTING:



Anti lock brake system light comes up when there is issue with car brake systems. It can be low brake fluid or faulty ABS fuse or its issue with brake system or assembly. Your vehicles brake system needs inspection.


To troubleshoot these issues, I suggest you to refer the help links provided below. There are direct links with accurate solution, for these specific issues.


Click the link below and follow the procedure: ------


All types of ABS LIGHT / brake problems and repairs

http://howtobyme.blogspot.com/2011/11/abs-and-service-light-comes-on.html

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http://howtobyme.blogspot.com/2011/11/abs-light-stays-on-but-brakes-work-fine.html

----------------

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http://howtobyme.blogspot.com/2011/11/vcs-and-abs-lights-go-on-and-off.html

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http://schematicsdiagram.blogspot.com/2011/06/abs-and-traction-control-lights-stays.html

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ABS & Brake lights warning indicator steady on dash and speedometer not working for Dodge Ram?

http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html

-----------------------

Battery Light and ABS Light on Dash

http://whoisbyme.blogspot.in/2012/07/battery-light-and-abs-light-on-dash.html

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Sometimes ABS light comes on while Driving?

http://howtobyme.blogspot.com/2011/12/sometimes-abs-light-comes-on-while.html

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How Anti-Lock Brakes Work?

http://technoanswers.blogspot.com/2011/11/how-anti-lock-brakes-work.html

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Brake System Troubleshooting?

http://technoanswers.blogspot.com/2011/11/brake-system-troubleshooting.html

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http://technoanswers.blogspot.com/2012/01/anti-lock-brake-light-stays-on-all-time.html

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http://repairhelpcenter.blogspot.com/2012/01/abs-light-comes-on-and-car-makes.html

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http://repairhelpcenter.blogspot.com/2011/11/abs-trouble-codes-for-all-1994-00-acura.html
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2008 Toyota Highlander: ABS warning light Blinking and OBD Error codes Coming?

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These details will help.

Thanks.

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1 Answer

I have a 2002 Cadillac Deville and a few weeks ago three lights came on at once: Traction Control, ABS and Brake light are all on in my dash. Did something get disconnected? How can I repair this?


have the code pulled from the computer to find out what set the lights on.the traction control works off of the abs sytem and so if theres a problem its not uncommone for both lights to come on.the brake light and abs lights on at the same time means there is a possible serious problem

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1 Answer

2003 cts, i took it for a safety and they did not disable traction control, when putting the vehicle on the hoist, now the traction control and abs lights come on randomly, but turn off when i restart the...


well while putting the car on the lift, traction control does not need to be disabled, and will not cause the abs/traction light to illuminate, these cars are known to have terrible wheel speed sensors that are brittle and tend to brake or malfunction for no apperent reason, and the wheel speed sensors are what control your abs and traction conrol units and they are normally what make the light come on on your dash, the warranty on the sensors was prolonged for that reason, so depending on the mileage of your car they might be covered, hope this helps

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2 Answers

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Sounds like you have loose brake pad linings.
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1 Answer

Problem with my cruise control and ABS light on 03 Explorer


Anti-Lock Control —Vehicles Built After 03/2002 The 3-channel anti-lock brake system consists of the following components:
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • Anti-lock brake control module (ECU)
  • rear wheel speed sensor
  • rear wheel speed sensor rings
  • yellow anti-lock brake warning indicator
The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
  • active brake booster with integral solenoid
  • brake booster release switch
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • stability assist module (ECU)
  • stability assist event indicator
  • lateral accelerometer
  • longitudinal accelerometer (4x4)
  • rear wheel speed sensors
  • rear wheel speed sensor rings
  • steering wheel position sensor
  • yaw rate sensor
  • yellow anti-lock brake warning indicator
  • brake pressure transducer
  • traction control switch
---------------------------------------------------------------------
I suspect the abs issue is causing the speed control not to work if it happened at the same time the cruise control stopped working. When the yellow ABS light comes on, it means the ABS is dactivated. You may have a faulty accelerometer which senses acceleration and yaw (side to side lean). I have not seen a bad one but you said it is sensitive to acceleration.
I would unplug it and see what happens. The connector should have a small tab to depress so you can pull the connector out.
Here is where it is:

Accelerometer Removal and Installation
  1. NOTE: The accelerometer is located under the center, rear passenger seat carpet. (I think you have to remove seat for access).
    Cut the carpeting along the perforations.
  1. Disconnect the electrical connector.
  1. Remove the nuts and remove the accelerometer.
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Have dealer hook up tester and pull fault codes if you can't find an easy solution.
Some background info
  • A malfunction in the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system. However, normal power-assisted braking remains.
  • Malfunctions are indicated by the yellow ABS warning indicator in the instrument cluster.
  • The anti-lock brake system is self-monitoring. When the ignition switch is turned to the RUN position, the anti-lock brake control module will carry out a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS warning indicator in the instrument cluster.
  • During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.
  • Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12mph), the anti-lock brake control module turns on the pump motor for approximately one-half second. At this time, a mechanical noise may be heard. This is a normal function of the self-check by the anti-lock brake control module.
  • Pedal pulsation coupled with noise while braking on loose gravel, bumps, wet or snowy roads is normal and indicates correct functioning of the anti-lock brake system.
  • Warning Lamp Indicator
    The anti-lock brake system (ABS) uses the yellow ABS warning indicator to alert the driver of a malfunctions in the ABS.
    The yellow ABS warning indicator will come on to warn the driver that the ABS has been turned off due to a symptom that exists in the ABS. Normal power assist braking remains but wheels can lock during a panic stop while the yellow ABS warning indicator is illuminated.

    -----------------------------------------
    Please report back, I am curious if that is what it is. Good luck

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    1 Answer

    2003 Chevy Impala Service Traction Sytem show on Dash


    I can't answer the question about the gas fumes, but I had the same problem last year with the "Service Traction Sysytem" message and the Trac and ABS lights coming on in my Impala. Mine turned out to be because of a bad wheel bearing, that was causing the ABS and traction system not to work. I'm not sure if you've experienced this, but another thing that would happen with mine was that I would go to brake and have a hard time depressing the brake pedal, almost like it was pushing back. That is the point when the Trac and ABS lights came on.

    Jan 01, 2009 | 2005 Chevrolet Impala

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