Checking And Correcting Coolant Level

WARNING: Only open the coolant expansion tank after the engine has cooled down, otherwise there is a risk of scalding! Coolant consists of water and coolant additive.If coolant needs to be added immediately, tap water can additionally be used for topping up. Then have the coolant checked by BMW Service at the next opportunity.Use only suitable additives as engine damage can otherwise occur.The additives are harmful to health.The Owner's Handbook contains an overview graphic of the engine compartment and important information about coolants.Position of the coolant tank in the engine compartment, see: OVERVIEW OF ENGINE COMPARTMENT (GASOLINE)  OVERVIEW OF ENGINE COMPARTMENT (DIESEL)  Checking and correcting coolant level  Allow the engine to cool down. Turn the expansion tank sealing cap counter-clockwise slightly until the excess pressure is released. Fully open the sealing cap. The coolant level is correct when it is between the minimum and maximum mark. If required, slowly top up to the correct fluid level. Do not overfill. Turn the sealing cap closed. Have the causes of coolant loss rectified as soon as possible.Have the coolant checked.Disposal Comply with the environmental protection laws for the disposal of coolant and coolant additives.