2011 Mercedes R-Class Owner's Manual - Page 241
2011 Mercedes R-Class Manual
Page 241 highlights
Warning and indicator lamps in the instrument cluster Safety systems Problem Possible causes/consequences and M Solutions 239 ! G Risk of accident The yellow ABS warning ABS (Anti-lock Brake System) is deactivated due to a malfunction. lamp is lit while the Therefore, BAS (Brake Assist), ESP® (Electronic Stability Program), engine is running. EBD (Electronic Brake-force Distribution) and PRE-SAFE® are also deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Observe the additional display messages in the multifunction display. X Drive on carefully. X Visit a qualified specialist workshop. If the ABS control unit is faulty, there is also a possibility that other systems, such as the navigation system or the automatic transmission, will not be available. ! G Risk of accident The yellow ABS warning The on-board voltage is too low. ABS has been deactivated due to lamp is lit while the undervoltage. engine is running. Therefore, ESP®, BAS and PRE-SAFE® are also deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Switch off consumers that are not required, e.g. the rear window defroster or interior lighting. ABS will be available again as soon as the vehicle's on-board electrical system voltage increases. If the warning lamp is still on: X Have the battery and alternator checked at a qualified specialist workshop. ! Self diagnosis is not yet complete. The yellow ABS warning X Carefully drive a suitable distance making slight steering lamp is lit while the movements at a speed above 12 mph (20 km/h). engine is running. Z On-board computer and displays