See also:

Deactivating/activating ESP®
Observe the "Important safety notes" section. WARNING ESP® should not be deactivated during normal driving other than in the circumstances described below. Disabling the system ...

Additives
Only use DEF in accordance with ISO 22241. Do not use additives with DEF and do not dilute DEF with water. This may destroy the BlueTEC exhaust gas aftertreatment system. ...

Cleaning the windows
WARNING Before cleaning the windshield or wiper blades, switch off the windshield wipers and remove the SmartKey from the ignition lock. On vehicles with KEYLESS-GO, press the Start/Stop b ...