It means the computer has stored a fault code, read this way. To retrieve stored DTC's locate the data link connector. DLC is under the driver's side of the dash. Turn the ignition switch off. Using Diagnostic Trouble Code Check Harness (MB9915290, GROUND dlc tERMINAL NUMBER 1. aS SHOWN IN THE FIGURE, If any codes are stored they will flash on the ABS lamp, Long flashes are the first digit and short flashes are the second digit, so a 45 will flash as four long flashes and 5 short, if 2 or more codes are stored, the lowest number is displayed first. If no codes are stored, the ABS light will flash constantly.
