System self-test
After you have switched on the ignition, the system carries out a self-diagnosis.
WARNING
A malfunction in the system has been
detected if one of the following conditions
occurs:
• the indicator lamp in the SOS button does not light up during the system
self-diagnosis.
• the indicator lamp in the
Roadside Assistance button does not light up during the system self-diagnosis.
• The indicator lamp in the
information button does not light up during selfdiagnosis of the system.
• the indicator lamp in the SOS button,
Roadside Assistance button or
information button continues to be
lit red after the system self-diagnosis.
• The Tele Aid Inoperative or Tele Aid Not Activated message appears in the
multifunction display after the system self-test.
If a malfunction is indicated as outlined above,
the system may not operate as expected. In
the event of an emergency, assistance must
be summoned by other means.
Have the system checked at the nearest
authorized Mercedes-Benz Center or contact
the following service hotlines:
• USA: Mercedes-Benz Customer Assistance
Center under
1-800-FOR-MERCedes(1-800-367-6372)
or 1-888-990-9007
• Canada: Customer Service at
1-888-923-8367
See also:
Using KEYLESS-GO to start the engine
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 eng ...
Resetting triggered NECK-PRO head
restraints
WARNING
For safety reasons, have the NECK-PRO head
restraints checked at an authorized
Mercedes-Benz Center after a rear-end
collision.
WARNING
When pushing back the NECK-PRO head
r ...
Setting the specified minimum distance
You can set the specified minimum distance
for DISTRONIC PLUS by varying the time span
between one and two seconds. With this
function, you can set the minimum distance
that DISTRONIC PLUS kee ...
