2005 Mercedes E-Class Owner's Manual - Page 380

Practical hints What to do if ... Symbol messages Display symbol Display messages Undervoltage Switch off consumers Visit workshop Possible cause The battery has insufficient voltage. Possible solution Turn off unnecessary electrical consumers. Stop immediately and check the poly-V-belt. If it is broken: Do not continue to drive. Otherwise the engine will overheat due to an inoperative water pump which may result in damage to the engine. Notify an authorized Mercedes-Benz Center. # The battery is no longer charging. Possible causes: alternator malfunctioning broken poly-V-belt Do not forget that the brake system requires electrical energy and may be operating with restricted capability. Considerably greater brake pedal force is required and the stopping distance is in- If it is intact: creased. Drive immediately to the nearest authorized Mercedes-Benz Center. Adjust driving to be consistent with reduced braking responsiveness. 378