ABS and anti skid tracking control lights stay on in my BMW 523i

dashboard brake light flashing randomly - Forums.focaljet.com

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May 14, 2012 - 12 posts
Car run great the only issue is the dashboard brake light is flashing randomly. ...Finally, the instrument cluster is hardwired to the ABS module, ... Also,i change the parking brake switch and the light goes on & off less frequent.

what does ABS flashing light mean at the dashboard of my 1996 ...

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May 3, 2009 - What does ABS flashing light mean at the dashboard of my 1996 ... just hard enough to skid a tiny but, then back off a hair to stop skidding.

ABS Brakes Troubleshooting - How to Troubleshoot Anti ...

www.popularmechanics.com/cars/how-to/a461/2265091/

The light being on means the system has detected a problem in one or more sensors. The vibration is the ABS modulating the brakes to prevent skidding because it has detected a wheel that is locked up. That wheel is most likely the one sensor that is giving you the error.

One or more of the sensors in the wheels that are responsible for these functions is faulty. It is sending a signal that is mucking up the calculations that control the brakes and engine for traction control and anti skid. All of them need to be checked!

ABS - Anti-lock Brake System.
If the ABS lights on the dashboard permanently the ABS system is faulty. You must access the ABS Electronic Control Unit (ECU) memory for pull out all DTC (Diagnostic Trouble Codes), using diagnostic equipment connected to the data link connector of the car. Then you will be full informed about bad pieces (e.g.: front right wheel abs sensor interrupted, ...). After bad pieces replacement you will be able to erase all faults memored by ABS ECU, in other words reset the ABS system and turn off the warning lamp on dashboard.
ASR - Acceleration Skid Control system.
When ASR warning light blinking the system is activated itself for car acceleration skid control.
For today's typical high-torque engines, traction control (ASR) can increase both comfort and safety, particularly when driving on slippery roads or surfaces offering differing levels of grip. Traction control permits smooth starting and acceleration through the full speed range without wheel-spin or fishtailing.


ASR only operates in conjunction with the electronic accelerator (E-gas) and uses components of the anti-lock braking system (ABS). If one wheel suddenly begins to rotate faster than the others (slip), ASR intervenes in the engine management system and reduces power until the wheel stops spinning.
The ASR system represents a further contribution to active safety as it maintains vehicle traction and directional stability throughout the acceleration phase at any speed. In addition, it reduces tyre wear. Activation of the ASR system is indicated by a flashing indicator lamp in the instrument cluster.
The ESP system means the Electronic Stability Program. ESP system includes the ABS system.

Abs Light:
If its glowing momentarily while driving in slick conditions then its normal operation..
But if it stays glowing even under dry pavement then there is a problem with your anti lock brake and traction control system..
It happens commonly of wheel speed sensor which malfunctions..
Try to access the data in the anti lock brake module to find out which one malfunctions..

hi this should be set automatically the asd button is for turning it off only, it is set on as normal...to see if its working just try spinning the rear wheels on something slippery and you should see a light normally a yellow triangle with an exclamation mark in it when the wheels slip..hope this helps

Fuses: Fuse arrangement in fuse panel, behind instrument cluster, left
Fuse Arrangement In Fuse Panel

1 - Heated washer jets 5A 2 - Turn signals 10A 3 - Headlight washer (relay), illumination for glove
compartment, climate control, Automatic Transmission, instrument cluster 5A 4 - License plate light 5A 5 - Instrument cluster, seat heating, test connection
for cruise control, bulb monitor for auto-check display, Automatic Transmission display, switch
lighting, mirror switches and actuators, airbag
warning light, outside temperature indicator,
climate control 10A 6 - Central locking system 5A 7 - Anti-lock brake system (ABS) 10A 8 - Vacant 9 - Mirror heating 10A 10 - Vacant 11 - Cruise control (Automatic Transmission) 5A 12 - On board diagnostic system 10A 13 - Brake lights 10A 14 - Interior lights, reading lights, anti-theft alarm system, vanity mirror 10A 15 - Instrument cluster, power windows, climate control, automatic transmission 10A 16 - Anti-lock brake system (ABS), Anti-Slip Regulation (ASR) 5A 17 - Heated door locks 10A 18 - High-beam, right 10A 19 - High-beam, left 10A 20 - Low-beam, right 15A 21 - Low-beam, left 15A 22 - Side marker and tail light, right 5A 23 - Side marker and tail light, left 5A 24 - Wiper and washer system 25A 25 - Blower for heating, climate control 30A 26 - Rear window defogger, mirror heating 30A 27 - Rear window wiper 15A 28 - Fuel Pump 15A 29 - Engine timing 30A 30 - Sun roof 20A 31 - Tail lights, cruise control, automatic transmission 15A 32 - Engine timing 20A 33 - Cigarette lighter 15A 34 - Engine timing 15A 35 - Trailer recptacle 30A 36 - Fog lights 15A 37 - Radio 20A 38 - Luggage compartment light, central locking system 15A 39 - Emergency flasher system 15A 40 - Horn 25A 41 - Anti-lock brake system (ABS) 25A 42 - Vacant 43 - Vacant

Check/replace all sensors .. ECU

It sounds like you have a faulty ABCM or anti-lock braking control mechanism. 2003 was a common year for failure of this. Usually your car will drive just fine, however, your ABS and traction control might not work as well as there supposed too in a collision.

Hello Steve

The problem is in the fuse box. The ABS Fuse needs replacing and while you are doing this make sure you check other fuses too, as the ABS fuse normally takes out other fuses but not always.

Hope this helps. Please don't forget to rate me.

Thanks