Test Preparation

Ensure battery voltage is 11-14 volts. Ensure fuses No. 1-1 and 1-7 in engine compartment fuse box are not blown. Ensure central locking system, infrared central (remote) locking system, parking lights, headlights and brakelights are operating properly. Breakout Box (124 589 00 21 00) and Test Cables (202 589 16 63 00), (124 589 37 63 00) and (140 589 22 63 00) are necessary to perform tests.