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 ...

Tips for driving with DISTRONIC PLUS
Important safety notes WARNING The DISTRONIC PLUS works to maintain the speed selected by the driver unless a moving obstacle proceeding directly ahead of it in the same travel direction is d ...

Driving on flooded roads
Do not drive through flooded areas. Check the depth of any water before drivincg through it. Drive slowly through standing water. Otherwise, water may enter the vehicle interior or the engin ...