Question about Buick Regal

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Anti lock,trac off,service vehicle,check engine lights are on &the brake pedal starts to stop then slips with humming sound repeatedly so what is it?

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Year make and model?

You'll need to start by pulley codes. There could be more than one problem, but your description sounds like a condition known as overactive ABS. This is caused by a wheel speed sensor dropping or loosing its signal at slow speeds which fools the ABS into thinking the wheel locked up.

Each wheel will have a sensor so having the code information will make it a lot easier to determine which wheel is having the problem.

the traction control light will come on anytime the ABS light is on because the traction control relies on the ABS to function correctly. Usually the check engine light will not come on when there is an ABS issue which leads me to believe there are two issues.

Posted on Oct 14, 2010

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2 Answers

Esp and abs light on in 2009 ford transit how do i eliminate them


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 issue,i suggest you to refer the help links provided below.There are direct links with accurate solution,for these specif issue.

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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ABS light stays on but brakes work fine?

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

----------------
VCS and ABS lights go on and off intermittently on Lexus? http://howtobyme.blogspot.com/2011/11/vcs-and-abs-lights-go-on-and-off.html
-------------
The ABS and Traction Control Lights stays ON dash of car? http://schematicsdiagram.blogspot.com/2011/06/abs-and-traction-control-lights-stays.html

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

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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
----------- 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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Anti-lock brake light stays on all the time?

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

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ABS light comes on and Car makes Grinding noise?

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

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ABS trouble codes for all models?

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?

http://technoanswers.blogspot.in/2012/05/2008-toyota-highlander-abs-warning.html

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2003 Lexus ES: VSC, TRAC OFF, ABS lights ON?

http://technoanswers.blogspot.in/2012/04/2003-lexus-es-vsc-trac-off-abs-lights.html

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2008 Toyota Highlander Hybrid: Warning Lights Abs, Vsc & Brake Are On?

http://technoanswers.blogspot.in/2012/04/2008-toyota-highlander-hybrid-warning.html

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ABS & Brake warning lights remains steady on dash? http://schematicsdiagram.blogspot.com/2011/12/abs-brake-warning-lights-remains-steady.html



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Can I drive the car without ABS fuse connected? http://schematicsdiagram.blogspot.in/2012/02/can-i-drive-car-without-abs-fuse.html

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Where is ABS/TCS module located on 2005 Cadillac Deville

http://schematicsdiagram.blogspot.com/2011/12/where-is-abstcs-module-located-on-2005.html

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ABS motor keeps running? http://schematicsdiagram.blogspot.com/2012/01/abs-motor-keeps-running.html

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When the car stops, abs pump turns ON? http://howtobyme.blogspot.com/2011/12/when-car-stopsabs-pump-turns-on.html

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Replacing ABS unit on Buick Century? http://technoanswers.blogspot.in/2012/02/replacing-abs-unit-on-buick-century.html

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2008 Toyota Tacoma: ABS causes Brake pedal fade? http://technoanswers.blogspot.in/2012/04/2008-toyota-tacoma-abs-causes-brake.html
-------------- Toyota Camry: Premature ABS Actuation? http://technoanswers.blogspot.in/2012/04/toyota-camry-premature-abs-actuation.html

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How to replace ABS Modulator Control Unit on Acura Integra?

http://repairhelpcenter.blogspot.in/2011/11/how-to-replace-abs-modulator-control.html

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How to replace ABS Pump Assembly on Acura Integra?

http://repairhelpcenter.blogspot.in/2011/11/how-to-replace-abs-pump-assembly-on.html

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How to remove ABS Accumulator on Acura Integra?

http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-abs-accumulator-on-acura.html

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How to remove ABS Control Unit on Acura Integra?
http://repairhelpcenter.blogspot.in/2011/11/how-to-remove-abs-control-unit-on-acura.html

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These details will help.
Thanks.

Nov 24, 2012 | Ford Transit Connect Cars & Trucks

2 Answers

Anti-lock system light on


Anti-Lock Braking System (ABS)
Purpose Anti-lock brake systems (ABS) - generally also referred to as anti-lock
systems (ALS) - are designed to prevent the vehicle wheels from locking
as a result of the service brake being applied with too much force, especially
on slippery road surfaces.
The idea is to maintain cornering forces on braked wheels to ensure that
the vehicle or vehicle combination retains its driving stability and manoeuvrability
as far as physically possible. The available power transmission
or grip between tyres and carriageway should also be utilised as
far as possible to minimise the braking distance and maximise vehicle
deceleration.
Why ABS? Although today commercial vehicle brakes are designed to a very high
technical standard, braking on slippery roads often results in potentially
dangerous situations. During full or even partial braking on a slippery
road it may no longer be possible to fully transfer the braking force onto
the road due to the low coefficient of friction (friction coefficient (k)) between
the tyres and the carriageway. The braking force is excessive and
the wheels lock up. Locked wheels no longer provide any grip on the
road and are almost incapable of transferring any cornering forces
(steering and tracking forces). This often has dangerous consequences:
- The vehicle becomes unsteerable
- The vehicle breaks away in spite of countersteering, and starts to
swerve.
- The braking distance is significantly increased
- Tractor-trailer combinations or semitrailer trains may break away or
jackknife.
Load sensing valve influence On dry roads today's load sensing valves (ALB) alone are often capable
of preventing the wheels from locking if the vehicle is unladen; they also
help the driver to effectively grade the braking process on wet road surfaces,
but they are unable to prevent locking as such (no slip monitoring).
In addition, they are unable to counteract any overreactions on the
part of the driver, or any variances in frictional or adhesion coefficients
which may apply to different sides of the vehicle, or indeed to its different
axles (?-split road surfaces).
Benefits of ABS: Only the Anti-Lock Brake System (ABS)
- guarantees stable braking characteristics on all road surfaces.
- maintains steerability and generally reduces the braking distance
- prevents vehicle combinations from jackknifing
- reduces tyre wear.
Limits of ABS Although ABS is an effective safety device, it can not suspend the limits
defined by driving physics. Even a vehicle fitted with ABS will become
uncontrollable if driven too fast around a corner.
So ABS is not a licence for a maladjusted style of driving or failure to observe
the correct safety distance.
4
ABS Training Anti-Slip Regulation (ASR)
Anti-Slip Regulation (ASR)
Why ASR? Increasing the engine output (accelerating) on a slippery road surface
can easily lead to the maximum adhesion on one or all powered wheels
being exceeded causing them to spin, especially if the vehicle is unladen
or partially laden.
Spinning wheels when driving off or accelerating represent a safety risk
just like locked wheel do when braking.
Reasons - Wheels that spin transfer just as little cornering force as locked
wheels.
- They also no longer transfer any tractive power onto the road.
Consequences - Vehicles that do not move or get stuck.
- Vehicles that can no longer be steered, jackknife on uphill uphill
gradients, or swerve in corners.
Benefits of ASR ASR prevents the powered wheel from spinning and provides the following
benefits:
- Tractive power and cornering forces are maintained.
- Stable driving behaviour is ensured when moving off, accelerating
and negotiating corners on slippery roads.
- The indicator lamp (if installed) is used to warn the driver of slippery
road conditions.
- Tyre wear is reduced to a minimum, and the motor vehicle's drive
train protected
- The risk of accidents is further reduced.
ASR and ABS: ASR represents a worthwhile addition to an ABS-controlled braking system.
All that is required to turn ABS control into full ABS/ASR control is
an ECU with the additional ASR function and a few additional components
for controlling the differential brake and the engine. This why ASR
is only available in combination with ABS.
Even a differential lock for off-road use and ASR do not exclude but complement
each other.
Limits of ASR The traction capacity of an all-wheel driven commercial vehicle can not
be achieved by a motor vehicle with only one driving axle - not even with
optimal ASR.

anti-lock-system-light-vi1ay411tmzjz03ru4fkmxgj-5-0.jpg

anti-lock-system-light-vi1ay411tmzjz03ru4fkmxgj-5-2.jpg

Feb 28, 2012 | 1994 Cadillac DeVille

1 Answer

My brake lights won't go off even when I cut off the engine, I'm getting a message that says trac off and anti lock in yellow on the left side


Hello: Check the brake light switch. It is mounted on/near the brake pedal before you attempt to repair brake and anti lock lights.

Jan 13, 2011 | 2000 Buick Century

1 Answer

Service Vehicle, Trac Off, & ABS lights 2001 Buick Century.


I just put in new fron pads in my 2000 buick century and the track off and the anti lock brake light and the service engine soon stays on

Jun 16, 2010 | 2001 Buick Century

1 Answer

Anti lock and trac off light on oldsmobile 1999 alero


WHEN BOTH ANTI LOCK AND TRAC LIGHT ON YOU HAVE PROBLEM IN ABS BRAKE AND TRAC SYSTEM.THE DEALERSHIP HAS TO FIX THEY HAVE DIAGNOSTIC EQUIPMENT TO WORK ON IT.THE ONLY THING YOU CAN CHECK MAKE SURE ALTERNATOR OUT PUT VOLTAGE WITH ENGINE RUNNING IS 13.5 TO 14.5 VOLTS.BECAUSE IF ALTERNATOR OUT PUT LOW BOTH LIGHTS WILL COME ON ALSO CHECK THE ABS RELAY.

Apr 18, 2010 | 1999 Oldsmobile Alero

1 Answer

Service engin soon , Anti lock brake, & Trac control lights came on while driving 55 mph


CHECK ALTERNATOR OUTPUT.MAKE YOUR VOLTAGE OUT PUT IS 13.5 TO 14.5 VOLTS.IF NOT ALTERNATOR BAD IF ALTERNATOR GOOD THE DEALERSHIP HAS TO HOOK CAR TO DIAGNOSTIC TO CHECK THE ENGINE PCM CONTROLS AND ABS BRAKES AND TRAC.SYSTEM.REASON I SAID ALTERNATOR BECAUSE I SEEN ALTERNATOR GO BAD UNTIL IT OUTPUT WAS LOW CAUSING CHECK ENGINE LIGHT AND ABS LIGHT TO COME ON.

Mar 10, 2010 | 1999 Oldsmobile Alero

1 Answer

Service vehicle soon, anti-lock, trac off all on


You need a new wheel bearing, This also happened to my olds alero, make sure 2 jack up each tire 1 at a time and pull back and forth on them checking for play, once you have found the 1 that has play or wobbles that is the 1 that needs a new wheel bearing

Jan 26, 2010 | 1998 Oldsmobile Intrigue

1 Answer

Anti-lock brakes activate on dry pavement


First, is the ABS light on? Does it come on when it's doing it? Make sure the brake fluid is full, and the brakes are still servicable, ie, pads still have meat on them. If so, the abs control module or a speed sensor might be on the way out. This is a safety issue, and I would recommend getting the truck to a good mechanic to have it checked out.

May 24, 2009 | 2001 Chevrolet Tahoe

3 Answers

Anti lock light and so on , is on


Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the Check Engine, Service Engine Soon, ABS Or TC lights to tell you that there is a problem and you should have the car diagnosed and repaired. I would take it to a service center you trust and let then come up with a solution. Sometimes a problem in one system will turn light on for other systems that communicate with it, but it doesn't mean there is a problem in all of the systems.

Feb 02, 2009 | 1999 Oldsmobile Intrigue

7 Answers

2002 Buick Century anti-lock brake problems


i recently had this problem too, except i had all the lights on (ABS, service vehicle, trac-off, AND service engine) they are all easy to fix without spending more than 20-30$ for labour (depending how much your mechanic charges you) mine did it for free and he found out why the engine light is on afterwards too. so to fix all these lights (abs, trac-off, and service vehicle you MUST get another ABS cable (i went to a garage, they were towing a GM vehicle to the junk yard so i grabbed some scissors and cut BOTH abs cables on each side (good thing i did because one was bad) and braught them to my mechanic. the reason the lights come on is probably a defect or in my case my mechanic said it was salt buildup in the wires (on the drivers side) so he cut the wire off and rewired the new one and BOOM all the lights came off (service vehicle, abs, and trac-off) now for my service engine it says catalytic converter but im trying to put some fuel system cleaner to help it out i read somewhere that this is a defect of the car, so if you dont have that light yet, SELL your car ASAP for as much as you can get for it (after fixing the lights of course) and always google (car name+recalls) in the search bar to see what youre getting into, take care

Jul 12, 2008 | 2002 Buick Century

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