0000... Checking coolant level and concentration, correcting if necessary

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Check connections, hose clamps and hoses for coolant residues and damage such as e.g. cracks.
Check coolant composition in expansion tank: setpoint - 35°C to - 40°C.
Check coolant level in expansion tank. Coolant level must be between "MIN" and "MAX" markings. If necessary, top up coolant to max. fill level. If there is no coolant, also identify the cause and notify the customer.
When refilling (issue a separate invoice):
- If necessary, DRAIN DIFFERENTIAL AMOUNT OF COOLANT
- Top up with RECOMMENDED COOLANT .