See also:

Problems with PARKTRONIC
Problem Possible causes/consequences and Solutions Only the red segments in the PARKTRONIC warning displays are lit. You also hear a warning tone for approximately two s ...

Additives
Do not use any additives in the engine oil. This could damage the engine. ...

Coolant
Important safety notes The coolant is a mixture of water and antifreeze/corrosion inhibitor. It performs the following tasks: corrosion protection antifreeze protection raising the boiling ...