See also:

High outside temperatures
If DEF heats up to over 122 °F (50 °C) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result. WARNING When o ...

Adding engine oil
WARNING If engine oil comes into contact with hot engine parts, it may ignite and you could burn yourself. Do not spill any engine oil on hot engine parts. Environmental note When adding ...

ETS/4ETS (Electronic Traction System)
WARNING Observe "Important safety notes" (). Traction control is part of ESP®. Traction control brakes the drive wheels individually if they spin. This enables you to pull away and ...