Mercedes Benz C Class ABS Sensor Problems

has a problem with abs when put foot on brake pedal it pulses i think it may be a abs sensor but not totally sure have fitted new disks and pads did clean abs rings on front when put new brakes on yesterday

Whilst driving today I got this error message on my dashboard "Run flat indicator inoperative." This turned the traction control off, ABS off and stopped the cruise control from working. After parking the car, leaving it for a while I then...