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 ...

Features & Pricing
Excluding the destination charge, the GL320 Bluetec starts at $58,200, while the GL450 starts at $59,200. Both represent $3,000-plus increases over last year's prices, though larger standard wheel ...

Cleaning the exterior lighting
•► Clean the plastic lenses of the exterior lights with a wet sponge and a mild cleaning agent, e.g. Mercedes-Benz car shampoo or cleaning cloths. Only use cleaning agents or cleaning c ...