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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 ...

Selecting a menu item
The following example describes how to select a station from the station presets in radio mode. Press the function button. Select Presets by sliding and turning the COMAND controller ...