See also:

Safety, Reliability & Mileage
The CL has not been crash-tested by the Insurance Institute for Highway Safety, nor is there reliability data for it. The CL550's mileage is estimated to be 15/23 mpg city/highway, and it takes pr ...

Deactivating/activating PARKTRONIC
1. To deactivate/activate PARKTRONIC 2. Indicator lamp If indicator lamp ; lights up, PARKTRONIC is deactivated. PARKTRONIC is automatically activated when you turn the SmartKey to positio ...

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 ...