The ASC light comes on while driving usually at low speed with loss oftraction. This will go off automatically with return of traction only to repeat. Never does it at speed exceeding 30mph. Subject is 2000 Jag Vanden Plas 73000 miles, new battery, 10 days old and new brakes @70,000. What could be the problem

ABC/ASC/DSC lights on due to bad tires/wheel not centered ...

www.bimmerforums.com/forum/showthread.php?1568281...DSC...

Dec 5, 2010 - Thread: ABC/ASC/DSC lights on due to bad tires/wheel not centered? ... I was driving at highway speeds again. I drove the car for 10 mins, then ..... I cleared them. If the lights come back on, I'll scan with INPA and see what it reports. .... This was happening at low speeds on dry pavement. So something is ... Dsc - Bimmerforums
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Stabilitrak is a design that lets the ECU and the ABS system share information. If you step on the gas pedal and loose traction, the ABS tells the ECU that you have lost traction. The ECU calculates what it should do to help and usually will ignore your request for "more fuel" (when you step on the gas pedal) and will reduce the power to the transmission until the ABS system communicates that traction has returned. More than likely there is a failure in the ABS system. The problem may be intermittent right now but this will need to be repaired. If you have an ABS code reader please let me know what codes are stored. If not then you will need to send your car in for diagnostis and an estimate for repair, let me know if I can be of any more help, good luck.

I have three 1997 Olds Cutlass's. They do it to! Nothing to worry about. They will do that in response to a bump, or washboard road driven over at a certain speed. The wheel speed sensor on each wheel tells the computer how fast each wheel is turning. If one wheel speed is faster than the other three, as when you hit a bump, the computer thinks it is loosing traction and flashes the light, and may or may not engage the ABS system to even up the speed on all four wheels.

Now if that light comes on, and STAYS on, that is another matter. It will only do that if a wheel speed sensor becomes faulty, and then the ABS light will override the traction light.

Drive on!!!

This is the ASC indicator. It comes on when the system is turned off. To get the light out, turn the system back on by pushing the ASC(dsc) button on the console. It's located just ahead of the shift lever. ASC is the Automatic Stability Control system.
It's a traction control light. it warns whenever the system is turned on and the car senses a loss of traction. you can deactivate the system by pushing the ASD(dsc) button and holding. this light will illuminate to say: you may lose traction.
Can sometimes be activated by faulty brake(ABS) sensors,ABS pump,While checking ensure that your brake pads aren't worn right down.
If the light still stays up get your local service dealer to scan cars computer for fault code relating to which sensor is perhaps faulty.
I hope this helps you or get back with your findings

That means your system detected lowered traction, like a wheel spin or slip..and the system is intervening to assist you...It has the ability to apply brakes and lower throttle...

FOUR-WHEEL DRIVE SYSTEM

(a) Four-wheel drive control

Use the four-wheel drive control lever and center

differential lock button to select the following transfer and

center differential modes.

The "H" and "L" position of the four-wheel drive control lever

provides either lock or unlock mode of the center differential

depending on the center differential lock button position.

Use the center differential lock system if your wheels get stuck

in a ditch, or when you are driving on a slippery or bumpy

surface. When the center differential is locked, the vehicle

stability control system is automatically turned off and the

center differential lock and "VSC OFF" indicator lights come on

because the function that controls engine performance

As soon as the center differential lock switch is turned

on, the "VSC OFF" indicator light comes on. After the

wheels are out of the ditch or off the slippery or bumpy

surface, turn the center differential lock switch off.

Make sure the center differential lock indicator light and

vehicle stability control system off indicator light turn

off.

"H" (high speed position, center differential unlocked):

Lever at "H", center differential lock button left out

Use this for normal driving on all types of roads, from dry

hard-surfaced roads to wet, icy or snow-covered roads. This

position gives greater economy, quietest ride, least wear and

better vehicle control.

"H" (high speed position, center differential locked): Lever

at "H", center differential lock button pushed in

Use this for greater traction when you experience a loss of

power, such as wheel slipping, in the center differential unlock

mode.

"N" (neutral position): Lever at "N"

No power is delivered to the wheels. The vehicle must be

stopped.

"L" (low speed position, center differential unlocked):

Lever at "L", center differential lock button left out

Use this for maximum power and traction. Use this for climbing

or descending steep hills, off-road driving, and hard pulling in

sand or mud.

In this mode, the braking feeling that occurs when the wheels

are negotiating a sharp corner is further reduced than in the "L"

(low position, center differential locked) mode.

"L" (low speed position, center differential locked): Lever

at "L", center differential lock button pushed in

Use this for maximum power and traction. Use this for hard

pulling in situations the vehicle cannot negotiate even in the "L"

(low speed position, center differential unlocked) mode. Also,

using this mode when driving down steep off-road inclines will

help contribute to increased vehicle stability.

https://secure.drivers.lexus.com/lexusdrivers/info/my-lexus/resources/submit-owners-manual-search.do

Please copy and paste the link above and it will take you to the lexus site. There you will find the owners manual and you can download whatever sections you need for free.

Hope this helps.

your speed sensor sounds like it was damaged during the brake job

A yellow light containing an exclamation mark surrounded by a triangle, all surrounded by a curved arrow is the Automatic Stability Control warning light (ASC + Traction Control). If the light just flashes momentarily whilst driving it means that you have driven in a way that has triggered the ASC system to activate and protect you. If the light is on all the time it can mean that you have switched the system off. The switch for the ASC is one of the row of chrome switches just under the airconditioning controls. If you operate the switch and the light stays on, you have a faulty ASC system. OK to drive the car but be aware that the stability control will not save you from a skid. Have it looked at if you can't get the light to stay off.

Normal operation: Light on when you turn on the ignition, should go out after engine starts. Light flashes if you are driving hard on a slippery surface and the system is acting to stabilise the car.

Faulty: Light on all the time measn either you have turned the system off or there is a fault.

Check to see if your brake pads and rotors are in good condition. Or if you have replaced the pads yourself and have not reset the wheel sensors this would cause the ABS Antilock Brake System light and the ASC Automatic Stability Control light to stay on as the ASC uses the ABS brakes with computer assistance to control the traction of the car if not fixed it can affect your rev limiter and slow performance

Yes definitely check the tread on your tires, they are slipping around corners that's why the traction control comes on. It could like you said be low tire pressure but they would have to be pretty low and you would notice if they were that low. The traction control is sensitive in the bmw's that's what makes them great.