See also:

Important safety notes
WARNING When opening or closing the door windows, make sure that there is no danger of anyone being harmed by the opening/closing procedure. The door windows are equipped with automatic ope ...

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 ...

Safety notes
WARNING Work improperly carried out on electronic components and associated software could cause them to cease functioning. Because the vehicle's electronic components are interconnected, a ...