Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual: Starting the vehicle

Starting the vehicle with the start/stop button

Requirements:

• The SmartKey is in the vehicle and is recognized.

• Shift the transmission to position P or N.
• Depress the brake pedal and press button 1 once.
• If the vehicle does not start: switch off nonessential consumers and press button 1 once.
• If the vehicle still does not start and the Place the Key in the Marked Space See Operator's Manual display message also appears in the multifunction display: start the vehicle in emergency operation mode.

You can switch off the engine while driving by pressing button 1 for about three seconds or by pressing button 1 three times within a second.

Be sure to observe the safety notes under "Driving tips".

Starting the vehicle in emergency operation mode

If the vehicle does not start and the Place the Key in the Marked Space See Operator's Manual message appears in the multifunction display, you can start the vehicle in emergency operation mode.

• Make sure that marked space 2 is empty.
• Remove SmartKey 1 from the key ring.
• Place SmartKey 1 in marked space 2 on the symbol 3.

  The vehicle will start after a short time.

  If you remove SmartKey 1 from marked space 2 the engine continues running. For further engine starts however, SmartKey 1 must be located in marked space 2 on symbol 3 during the entire journey.

• Have the SmartKey 1 checked at a qualified specialist workshop.

If the vehicle does not start:

• Place SmartKey 1 in marked space 2 and leave it there.
• Depress the brake pedal and start the vehicle using the start/stop button.

You can also switch on the power supply or the ignition with the start/stop button.