2001 Mercedes SLK-Class Owner's Manual - Page 197

Instruments and controls Coolant level Operation Driving Instrument cluster display Practical hints Car care Technical data Index 194 page 256. The drain plugs for the cooling system are located on the right side of the engine block and at the bottom of the radiator. Warning! In order to avoid possible serious burns or injury: • Use extreme caution when opening the hood if there are any signs of steam or coolant leaking from the cooling system, or if the coolant temperature gauge indicates that the engine is overheated. P20.20-2052-26 Coolant level To check the coolant level, the vehicle must be parked on level ground and the engine stopped. Check coolant level only when coolant is cold. Adding coolant If coolant has to be added, a 50/50 mixture of water and MB anticorrosion/antifreeze should be added. Refill coolant until the float in the reservoir reaches and closes the filler opening. Anticorrosion/antifreeze, see • Do not remove pressure cap on coolant reservoir if engine temperature is above 194°F (90°C). Allow engine to cool down before removing cap. The coolant reservoir contains hot fluid and is under pressure. • Using a rag, slowly open cap approximately 1 /2 turn to relieve excess pressure. If opened immediately, scalding hot fluid and steam will be blown out under pressure. • Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts.