Page 403 of 536

Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Display messages Possible causes/consequences and
M Solutionsb
Check Left
Cornering
Light or Check
Right Cornering
Light The left or right-hand cornering light is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Left Low
Beam
or Check
Right
Low Beam The left or right-hand low-beam headlamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Rear Left
Turn
Signal or Check
Rear Right Turn
Signal The rear left-hand or rear right-hand turn signal is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Front Left
Turn
Signal or Check
Front Right Turn
Signal The front left-hand or front right-hand turn signal is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Left Mirror
Turn
Signal or Check
Right Mirror Turn
Signal The turn signal in the left-hand or right-hand exterior mirror is
defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. Display messages
401
On-board computer and displays Z
Page 404 of 536

Display messages Possible causes/consequences and
M Solutionsb
Check
Center Brake
Lamp The high-mounted brake lamp is faulty.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Left Tail
and Brake
Lamp
or Check
Right
Tail and Brake Lamp The left or right-hand tail lamp/brake lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Left High
Beam
or Check
Right
High Beam The left or right-hand high beam is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check
Left License
Plate Lamp or Check
Right License
Plate Lamp The left or right-hand license plate lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Left Fog
Lamp
or Check
Right
Fog Lamp The left-hand or right-hand front fog lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Rear Left
Fog Lamp or Check
Rear
Right Fog Lamp The left-hand or right-hand rear fog lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Front Left
Parking
Lamp
or Check
Front
Right Parking Lamp The front left or front right parking or standing lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop.402
Display messages
On-board computer and displays
Page 405 of 536

Display messages Possible causes/consequences and
M Solutionsb
Check
Left Reverse
Lamp or Check Right
Reverse Lamp The left or right-hand backup lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Front Left
Sidemarker
Lamp
or Check
Front
Right Sidemarker
Lamp The left or right front side marker lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check Rear Left
Sidemarker
Lamp or Check Rear
Right Sidemarker
Lamp The rear left or right side marker lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Check
Left Daytime
Running
Light or Check
Right Daytime
Running Light The left or right-hand daytime running lamp is defective.
X
Check whether you are permitted to change the bulb yourself
(Y page 282).
or
X Visit a qualified specialist workshop. b
Active Headlamps
Inoperative The active light function is defective.
X
Visit a qualified specialist workshop. b
Malfunction See
Oper. Manual The exterior lighting is defective.
X
Visit a qualified specialist workshop. b
AUTO
Lamp Function
Inoperative The light sensor is defective.
X
Visit a qualified specialist workshop.
USA only:
X Switch off the daytime running lamps in the on-board computer
(Y page 385).
X Switch the lights on and off using the light switch. Display messages
403
On-board computer and displays Z