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Practical hints
What to do if …?
Display symbol Display message Possible cause Possible solution
F
KEY
NOT RECOGNIZED!
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.
̈ Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
̈ Operate the vehicle with the SmartKey in
the starter switch if necessary.
KEY DETECTED
IN VEHICLE
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.
̈ Take the SmartKey with KEYLESS-GO*
out of the vehicle.
KEY
DRIVE TO WORKSHOP!
The KEYLESS-GO* system is malfunction-
ing.
̈ Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
.
3RD BRAKE LIGHT
CHECK LAMP!
The high mounted brake lamp is malfunc-
tioning.
̈ Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT
VISIT WORKSHOP!
Brake lamp illumination is delayed or
lamp is permanently on.
̈ Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT, L
CHECK LAMP!
SUBSTITUTE LAMP ON!
The left brake lamp is malfunctioning. A
back-up bulb is being used.
̈ Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
BRAKE LIGHT, R
CHECK LAMP!
SUBSTITUTE LAMP ON!
The right brake lamp is malfunctioning. A
back-up bulb is being used.
̈ Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
DISPLAY MALFUNCTION
VISIT WORKSHOP!
The display for the lamps or the system is
malfunctioning.
̈ Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.