Electrical problems bmw 1999 318i

First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0186
DTC C0196
DTC C0201
DTC C0240
DTC C0241 or P0856
DTC C0244 or P1689
DTC C0245
DTC C0283
DTC C0287
DTC C0290 or C0292
DTC C0455
DTC C0550
DTC C0558

Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
• DTC C0035 Left Front Wheel Speed Sensor Circuit
• DTC C0040 Right Front Wheel Speed Sensor Circuit

theres a problem with the abs, when the abs has a problem the brake and abs light come on, also dsc light does too, because it uses the abs to control the system so when abs doesnt work it shuts down the dsc and turns the light on, you will need to have the abs system scanned for codes these codes will give an idea of whats not working and it can be diagnosed why.

check for abs sensor or for the best do on board dignosis

sound like wheel sensor.most time when car is moving and abs light come on its the wheel sensor is loose or wiring problem at the electrical connector or sensor going bad.

When the DSC Dynamic Stability Control light is ON your traction control is OFF. It will sometimes trigger the ABS light and the Rev Limiter it is an engine protection FAIL SAFE mode.
Check your brake switch on the brake pedal, this sounds like the problem wen replaced it will reset the Rev limiter, if the ABS light comes Check the wheel sensors

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

this is to do with the sensor leads on the brakes, cost around £40.00 each from main dealer, mines the same. Bmw fixed the problem by changing one lead and charged me a fortune, then the other lead decided to play up, so best to replace them all.

bad wheel bearing.will make noise and mess with sensors,or if had a brake job done caliper maybe loose to cause noise,if a drum which most are not you have parts rolling around in it,have seen it all.
traction control and abs use same sensor,you could have debris in caliper a little pebble between brake shoes and rotor will cause issues.

this could be a fault with the steering angle sensor located at the lower part of the steering colume, a fault read from a dealer will be able to verify this

Hi, the lights get lit when the brake fluid level in the reservoir falls too low or the fluid level signal is broken due to dirt in the connector. You could remove and install the sensor electric connector, located above the reservoir, and carefully knock the reservoir to release the possibly stuck level sensor.