Mercedes-Benz 2011 GL-Class Operator's Manual page 240

Display messages
238
Display messages
b
Turn Signal Front
Left
or
Turn Signal Front
Right
b
Turn Signal Left
Mirror
or
Turn Signal Right
Mirror
b
3rd Brake Lamp
b
Brake Lamp Left
or
Brake Lamp Right
b
Tail Lamp Left
or
Tail Lamp Right
b
High Beam Left
or
High Beam Right
Possible causes/consequences and M Solutions
The front left-hand or front right-hand turn signal is faulty.
X
Check whether you are permitted to change the bulb yourself
( Y page 120).
or
X
Visit a qualified specialist workshop.
The turn signal in the left-hand and/or right-hand exterior mirror
is faulty.
X
Check whether you are permitted to change the bulb yourself
( Y page 120).
or
X
Visit a qualified specialist workshop.
The high-mounted brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
( Y page 120).
or
X
Visit a qualified specialist workshop.
The left or right-hand brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
( Y page 120).
or
X
Visit a qualified specialist workshop.
The left or right-hand tail lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
( Y page 120).
or
X
Visit a qualified specialist workshop.
The left or right-hand high beam is faulty.
X
Check whether you are permitted to change the bulb yourself
( Y page 120).
or
X
Visit a qualified specialist workshop.