My abs light comes on and off. It will make a noise an a few minutes the light will come on . It has been work on about 4 times an everyone says that their is nothing they can do. What can I do now?

have vehicle scanned for trouble code possible abs sensor or hub going bad --when abs goes out you still have standard / conventional brakes [ means if you slam on brakes they will lock /skid ] but your brakes will work normal

Depending on what car you have. It's as though you have an abs ring/sensor fault, the noise you are hearing is the abs pump working this is because the gap between the abs sensor and the abs ring is to close, which make's the abs control module think that the wheel has locked up. causing it to open the valves in the abs hydro unit to try take away the pressure from the side with the fault.

Same as with ALL vehicle problems---
when you have a check engine light on

You stop using it
Check for OBD Codes
Diagnose your codes
Component test-- to find a problem
Make the repair

With or without codes-- you can Google
ABS Braking Systems,Trac Control & many other
abs add-ons-- to learn about them

What about reading your owners manual !!

Fail to see how using a vehicle with
brakes grinding, would be safe

Brakes have to come apart once a year
when you have no problems

Hi, the screeching noise could be a wheel bearing,if there is enough play in the bearing this could give a bigger air gap between the abs sensor and reluctor which would bring the abs/tcs lights on.

the shreiking is probably your belt, which might be loose, and the lights dimming could be the same thing, the belt loose

did you check the speed sensor on the rear end on top of the rear end. this sensor works the speedometer the abs and break lights and power door locks

the yellow light is warning you that a problem exsists with the abs. unless you are experienced with brakes and abs would highly suggest you take it to a shop.

ABS/ASC module is faulty
CLASSIC ABS FAILURE SYMPTOMS:
- Most of the time, the problem is the ABS module or one of the 4 wheel speed sensors (& sometimes the brake pressure sensor)
- In my 2002 BMW E39 DSC, three orange (warning) cluster display lights lit, ABS, Brake, & DSC
- The 3 warning lights reset when the ignition is turned off, only to repeatedly reappear within minutes of normal driving
- The fault is often intermittent leading you to falsely believe you've resolved the problem (proper diagnosis is important)
- Sometimes the fault only appears when the engine is hot; other times only at speeds over 40 mph
- Carsoft may erroneously show a rear speed sensor failure; but just replacing the speed sensor may make no difference.
- All the work is in correct diagnosis of the problem; parts replacement is trivial (from 1 to six bolts in a few minutes)
- Hence, this BMW E39 ABS 3-warning light DIY will concentrate on understanding and diagnosis of the problem

Most likely it is the ABS module is going bad and needs to be replaced or rebuilt at www.bba-reman.com, hope this helps.

Either ur Abs brains  shot which r located below the battery or u have a vacum hose unattached which there is about 4 runing all around the mastercylinder......but my guess would be the ABS ECU