2001 Mercedes C-Class Owner's Manual - Page 145

Instruments and controls Operation Driving Instrument cluster display Practical hints Car care Technical data Index Combination switch Blocked windshield wipers If the windshield wipers become blocked (for example, due to snow), switch off the wipers. For safety reasons before removing ice or snow, remove electronic key from starter switch. Remove blockage. Activate combination switch again (electronic key in starter switch position 1). Emergency operation of windshield wipers In case of windshield wiper malfunction in switch positions I or III, turn combination switch to wiper setting II. Have the system checked at your authorized Mercedes-Benz Center as soon as possible. 136 Windshield wipers smear If the windshield wipers smear the windshield, even during rain, activate the washer system as often as necessary. The fluid in the washer reservoir should be mixed in the correct ratio. See page 302 for instructions on filling up the windshield washer reservoir. Windshield and headlamp washer fluid mixing ratio For temperatures above freezing: MB Windshield Washer Concentrate "S" and water. 1 part "S" to 100 parts water (40 ml "S" to 1 gallon water). For temperature below freezing: MB Windshield Washer Concentrate "S" and commercially available premixed windshield washer solvent/antifreeze 1 part "S" to 100 parts solvent (40 ml "S" to 1 gallon solvent).