2001 Mercedes ML-Class Owner's Manual - Page 238

Adding coolant If coolant has to be added, a 50/50 mixture of water and MB anticorrosion/antifreeze should be added. After adding coolant, close cap until you hear it click a few times. The drain plugs for the cooling system are located on the left and right side of the engine block directly above the engine mounts and at the bottom of the radiator. Anticorrosion/antifreeze mixture, see page 297. 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 coolant is overheated. • 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. Engine compartment Instruments and controls Operation Driving 235 Instrument cluster display Practical hints Car care Technical data Index