Starting procedure with the SmartKey
To start the engine using the SmartKey
instead of KEYLESS-GO, pull the Start/Stop button out of the ignition lock.
To start a gasoline engine: turn the
SmartKey to position 3 in the ignition lock
and release it as soon as the
engine is running.
To start a diesel engine: turn the
SmartKey to position 2 in the ignition lock.
The 
preglow indicator lamp in the
instrument cluster lights up.
When the preglow indicator lamp
goes out, turn the SmartKey to position 3
and release it as soon as the
engine is running.
You can start the engine without preglow
if the engine is warm.
See also:
Seat belt
Problem
Possible causes/consequences and •► Solutions
After starting the
engine, the red seat
belt warning lamp lights
up for six seconds.
The seat belt warning lamp remi ...
Important notes on use
To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent DEF. Adding DEF is one of the
tasks performed during maintenance. Under
normal operating condi ...
Change of address or change of
ownership
In the event of a change of address, please
send us the "Change of Address Notice"
found in the Service and Warranty
Information Booklet, or simply call the
Mercedes-Benz Customer As ...