Ever since having our '99 ML430's motor's main pulley ass'y replaced, the radio does not turn off with the ignition, the rearview mirror's dimming feature fails to power up, the little readout screen in the OH center console is nonfunctioning, and the Homelink garage door programming (located in OH console - those three buttons) show no signs of life. The dome lights and sunroof work fine. As an aside, is there a source other than an MBZ service mgr and owner's manual for acquiring radio code? Thanx in advance for any and all consideration.