Page 335 of 442
335 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
A
Reserve fuel
The fuel level has dropped below the re-
serve mark.
Refuel at the next gas station
(page 278).
Y
Hood open!
You are driving with the hood open.
Close the hood (
page 281).
F
Key
Check battery!
The SmartKey with KEYLESS-GO* batter-
ies are discharged.
Change the batteries (
page 355).
Key
not recognized!
The SmartKey with KEYLESS-GO* is not
recognized while the engine is running
because
the SmartKey with KEYLESS-GO* is
not in the vehicle
there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe
to do so.
Search for the SmartKey.
Otherwise the vehicle cannot be cen-
trally locked nor can the engine be
started again after the engine is
stopped.
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.
Change the position of the SmartKey
in the vehicle.
Operate the vehicle with the Smart-
Key in the starter switch if necessary.
Page 337 of 442

337 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Brake light
Visit workshop!
Brake lamp illumination is delayed or
lamp is permanently on.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake light, left
Back-up light on!
The left brake lamp is malfunctioning. A
backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake light, right
Back-up light on!
The right brake lamp is malfunctioning. A
backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Display malfunction
Visit workshop!
The display for the lamps or the system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Front foglight,
left
The left front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Front foglight,
right
The right front fog lamp is malfunctioning.
Replace the bulb as soon as possible.
Headlt. cornering
The Bi-Xenon cornering lamps system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Headlt. cornering
Back- up light on
The Bi-Xenon cornering lamps system is
malfunctioning. Another light is being
used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Headlt. cornering
malfunction
Visit workshop!
The Bi-Xenon cornering lamps system is
malfunctioning.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 339 of 442

339 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
.
Marker light
,
front left
The front left side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
Marker light
front right
The front right side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
Park. light, front left
Back-up light on!
The left parking lamps are malfunction-
ing. A backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Park. light,
front right
Back-up light on!
The right parking lamps are malfunction-
ing. A backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Rear foglight
Back-up light on!
The rear fog lamp is malfunctioning. A
backup bulb is being used.
Replace the bulb as soon as possible.
Reverse light, left
The left reverse light is malfunctioning.
Replace the bulb as soon as possible.
Reverse light, right
The right backup lamp is malfunctioning.
Replace the bulb as soon as possible.
Switch off lights!
Lamps have been turned on although the
SmartKey in the starter switch is in posi-
tion 0.
Switch off the headlights.
Tail light, left
Back-up light on!
The left tail lamp is malfunctioning. A
backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Tail light, right
Back-up light on!
The right tail lamp is malfunctioning. A
backup bulb is being used.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Page 340 of 442

340 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
Turn signal, rear left
Back-up light on!
The left rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.
Replace the bulb as soon as possible.
Turn signal, rear right
Back-up light on!
The right rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.
Replace the bulb as soon as possible.
Turn sig., front left
Back-up light on!
The left front turn signal lamp is malfunc-
tioning. A backup bulb is being used.
Replace the bulb as soon as possible.
Turn sig., front right
Back-up light on!
The right front turn signal lamp is mal-
functioning. A backup bulb is being used.
Replace the bulb as soon as possible.
Turn sig.,
left
mirror
The left turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Have the LEDs replaced as soon as
possible.
Turn sig.,
right
mirror
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Have the LEDs replaced as soon as
possible.
H
Tire pres. monitor
activated
!
The tire pressure is being checked.
Tire pres. monitor
Reactivate
The tire inflation pressure monitor* is de-
activated.
Activate the tire inflation pressure
monitor* (
page 292).
Page 344 of 442

344 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Tire pres. FL
Caution
Tire defect
The left front tire is deflating.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.
Change the wheel (
page 370).
Tire pres. FL
Check tires!
The right rear tire pressure is low.
Carefully bring the vehicle to a halt.
Check the tire pressure.
Change the wheel (
page 370).
Tire pres. FR
Caution
Tire defect
The right front tire is deflating.
Carefully bring the vehicle to a halt,
avoiding abrubt steering and braking
maneuvers.
Change the wheel (
page 370).
Tire pres. FR
Check tires!
The right front tire pressure is low.
Carefully bring the vehicle to a halt.
Change the wheel (
page 370).
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 346 of 442

346 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
L
Tele Aid defective
Visit workshop!
One or more main functions of the Tele
Aid system are malfunctioning.
Have the Tele Aid system checked by
an authorized Mercedes-Benz Center.
Tele Aid battery
Visit workshop!
The emergency power battery for the Tele
Aid system is malfunctioning. If the vehi-
cle battery is also dead, Tele Aid will not
be operational.
Have the Tele Aid system checked by
an authorized Mercedes-Benz Center.
1
Restraint system
malfunction
Visit workshop!
The system is malfunctioning.
Drive with added caution to the near-
est authorized Mercedes-Benz Cen-
ter.
t
Function
Not available!
This display appears if button t or
s on the multifunction steering wheel
is pressed and the vehicle is not equipped
with a telephone.
Warning!
G
In the event a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational.
For your safety, we strongly recommend
that you visit an authorized Mercedes-Benz
Center immediately to have the system
checked; otherwise the SRS may not be ac-
tivated when needed in an accident, which
could result in serious or fatal injury, or it
might deploy unexpectedly and unnecessar-
ily which could also result in injury.
Page 349 of 442

349 Practical hints
What to do if …
Warning!
G
Driving while these messages are displayed
can result in an accident. Have your brake
system checked immediately.
If there is a malfunction in the SBC brake
system, we recommend that the vehicle be
transported with all wheels off the ground
using flatbed or appropriate wheel lift / dolly
equipment.
A tow bar must be used if circumstances do
not permit the use of the recommended
towing methods and the vehicle requires
towing with all four wheels on the ground.
Towing the vehicle with all four wheels on
the ground is only permissible for distances
u p t o 3 0 m i l e s ( 5 0 k m ) a n d a t a s p e e d n o t t o
exceed 30 mph (50 km / h). For more infor-
mation, refer to “Towing the vehicle”
(page 381).
If the SBC brake system enters its emergen-
cy operation mode, the driver must apply
significantly greater brake pedal pressure
and depress the pedal much further than
normal to obtain braking effect. If neces-
sary, apply full pressure to the brake pedal.
Brakes may only be applied to the front
wheels. Stopping distance is increased!
Low brake fluid in the reservoir may cause
the braking system to fail!
Don’t add brake fluid before checking the
brake system. Overfilling the brake fluid res-
ervoir can result in spilling brake fluid on hot
engine parts and the brake fluid catching
fire. You can be seriously burned.
iIf you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.!Brake pad thickness must be visually
inspected by a qualified technician at
the intervals specified in the Service
Booklet.
Page 350 of 442
350 Practical hintsWhere will I find ...?
Where will I find ...?First aid kit
The first aid kit is in the storage compart-
ment at the front edge of the front passen-
ger seat.
Pull tab1 upward.
Fold the covering forward.
Remove the first aid kit.
Vehicles with TIREFIT kit (E 55 AMG)
The TIREFIT kit is located under the trunk
floor.
Lift the trunk floor and engage the han-
dle in the upper edge of trunk.
Remove the luggage box (
page 351).
1Vehicle tool kit and jack
2Electric air pump
3TIREFIT kit
Spare wheel
The spare wheel is located under the trunk
floor.
Lift the trunk floor and engage the han-
dle in the upper edge of trunk.
Remove the luggage box (
page 351).
1Vehicle tool kit
Wheel bolt wrench
Jack
2Spare wheel
iCheck expiration dates and contents
for completeness at least once a year
and replace missing / expired items.