2008 Mercedes SL-Class Owner's Manual - Page 345

Practical hints What to do if ... Problem Possible cause/consequence The yellow ABS indicator lamp comes on when the engine is running. The ABS has detected a malfunction and has switched off. The BAS and the ESP® are also switched off (see messages in display). The electro-hydraulic brake system is still functioning normally but without the ABS available. Suggested solution Continue driving with added caution. Wheels may lock during hard braking, reducing steering capability. Have the system checked at an authorized Mercedes-Benz Center as soon as possible. - If the ABS control unit is malfunctioning, oth- Failure to follow these instructions iner systems such as Parktronic*, Distronic*, creases the risk of an accident. or the automatic transmission may also be Read and observe messages in the malfunctioning. display ( page 359). The charging voltage has fallen below 10 volts and the ABS was switched off. The battery may not be sufficiently charged. When the voltage is above this value again, the ABS is operational again and the ABS indicator lamp should go out. If the ABS indicator lamp does not go out: Have the generator (alternator) and battery checked. 344