2011 Mercedes S-Class Owner's Manual - Page 303

Driving Starting the engine Important safety notes G Warning Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon monoxide (CO), and inhaling it can cause unconsciousness and possible death. Do not run the engine in confined areas (such as a garage) which are not properly ventilated. If you think that exhaust gas fumes are entering the vehicle while driving, have the cause determined and corrected immediately. If you must drive under these conditions, drive only with at least one window fully open at all times. 301 i The Start/Stop button can be used to start the vehicle without inserting the SmartKey in the ignition lock. The SmartKey must be in the vehicle. X The Start/Stop button must be inserted in the ignition lock. X Depress the brake pedal and keep it depressed. X Press the Start/Stop button once (Y page 299). The engine starts. ! Do not depress the accelerator pedal when starting the engine. Automatic transmission X Pulling away Automatic transmission G Warning It is dangerous to shift AUTOTRONIC out of parking position P or neutral position N if the engine speed is higher than idle speed. If your foot is not firmly on the brake pedal, the vehicle could accelerate quickly forward or in reverse. You could lose control of the vehicle and hit someone or something. Only shift into gear when the engine is idling normally and when your right foot is firmly on the brake pedal. Shift the transmission to position P. i The transmission position display in the multifunction display shows P. Starting procedure with the SmartKey X Turn the SmartKey to position 3 in the ignition lock (Y page 299) and release it as soon as the engine is running. Using KEYLESS-GO to start the engine G Warning! As long as the SmartKey is in your vehicle, the vehicle can be started. Therefore, never leave children unattended in the vehicle, as they could otherwise accidentally start the engine. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. A child's unsupervised access to a vehicle could result in an accident and/or serious personal injury. i It is only possible to shift the transmission from position P to the desired position if you depress the brake pedal. Only then is the parking lock released. If you do not depress the brake pedal, you can move the DIRECT SELECT selector lever but the parking lock remains engaged. X Depress the brake pedal and keep it depressed. X Shift the transmission to position D or R. X Wait until the gear change is completed before pulling away. Z Driving and parking i To start the engine with the SmartKey instead of with KEYLESS-GO, remove the Start/Stop button from the ignition lock.