I have a 2006 ml500 with about 84000 miles on it. The other day while driving I started getting a whole bunch of malfunctions on my screen including: DSR Inopperable, SOS inoperable, Speedtronic errorr and no cruise control, what could have gone wrong to call these errors? Also Brake wear indicator is on but the rotors and brakes look good.

 

most likely you have a bad front wheel speed sensor. there is a service bulletin about this. also at the rear axle there is also a wire harness that breaks for the brake wear sensor that will cause the brake wear light to come on.