See also:

Headlamps fogged up on the inside
The headlamps may fog up on the inside if there is high atmospheric humidity. Drive with the headlamps switched on. The level of moisture diminishes, depending on the length of the journey an ...

Muscular Moves, Eventually
The turbo-diesel GL320 Bluetec has additional exhaust treatments to cut soot and nitrogen oxide emissions — technology last year's diesel GL320 CDI lacked, which is why California and several Nort ...

Low outside temperatures
DEF freezes at a temperature of approximately 12 °F (–11 °C). The vehicle is equipped with a DEF preheating system when it leaves the factory. Winter operation is therefore also guaranteed at ...