00 00 ... Coolant hoses: visual inspection for leaks. Checking coolant level and concentration, topping up if necessary

WARNING: This page is about a different car, the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, and 2007 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Check connections, hose clamps and hoses for coolant residues and damage such as e.g. cracks.
Check coolant level in expansion tank. Coolant level must be between Min. and Max. markings. If necessary, top up coolant to max. fill level.
Check concentration with antifreeze tester (special tool) in coolant expansion tank.
If necessary, drain off the difference quantity at the coolant drain plug and top up with recommended coolant (issue a separate invoice).