Page 383 of 506
381 Practical hints
What to do if …
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(USA only);(Canada only)3
Reduced braking power
Visit workshop
The SBC brake system is in emergency
operation mode. Considerable brake ped-
al force is required and the stopping dis-
tance is increased.
Continue driving with added caution.
Adjust driving to be consistent with
reduced braking responsiveness.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Service brake
Visit workshop
There are malfunctions, but the SBC
brake system is operating normally.
Visit an authorized Mercedes-Benz
Center as soon as possible.
Brake overheated
Drive carefully
The brake system is overheated due to an
excessive load on the brakes.
Relieve the load on the brake system.
Drive more smoothly and think ahead
to avoid unnecessary braking.
When driving down slopes, shift into a
lower gear to use the engine’s braking
power (
page 176).
Cautiously continue driving so that
the air stream will cool down the
brakes.
Release
parking brake
You are driving with the parking brake
set.
Release the parking brake
(page 48).
Page 402 of 506
400 Practical hintsWhat to do if …Display symbol
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Possible cause
Possible solution
H
Caution
Tire pres., RL
The left rear tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Ob-
serve the traffic situation around you.
Change the wheel (
page 425).
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Tire pressure, RL
Check tire
The left rear tire inflation pressure is
low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and adjust the tire inflation pressure.
If necessary, change the wheel (
page 425).
Caution
Tire pres., RR
The right rear tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Ob-
serve the traffic situation around you.
Change the wheel (
page 425).
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
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
excessive heat build-up and possibly a fire.
Page 403 of 506
401 Practical hints
What to do if …
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Possible solution
H
Tire pressure, RR
Check tire
The right rear tire inflation pres-
sure is low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and adjust the tire inflation pressure.
If necessary, change the wheel (
page 425).
Caution
Tire pres., FL
The left front tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Ob-
serve the traffic situation around you.
Change the wheel (
page 425).
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Tire pressure, FL
Check tire
The left front tire inflation pres-
sure is low.
Carefully bring the vehicle to a halt.
Check and adjust the tire inflation pressure.
If necessary, change the wheel (
page 425).
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
excessive heat build-up and possibly a fire.
Page 404 of 506
402 Practical hintsWhat to do if …Display symbol
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Possible cause
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H
Caution
Tire pres., FR
The right front tire is deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Ob-
serve the traffic situation around you.
Change the wheel (
page 425).
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Tire pressure, FR
Check tire
The right front tire inflation pres-
sure is low.
Carefully bring the vehicle to a halt.
Check the tire.
Check and adjust the tire inflation pressure.
If necessary change the wheel (
page 425).
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 408 of 506
406 Practical hintsWhat to do if …Display symbol
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@
Vehicle rising
Your vehicle is adjusting to your level se-
lection.
Leveling cancelled
The “Raised” level setting is canceled at
vehicle speeds of over 75 mph
(120 km / h).
Reactivate the “Raised” level setting.
Stop, car too low
The vehicle level control is malfunction-
ing.
Avoid excessive steering input. The fend-
er or tires could otherwise be damaged.
Listen for scraping noises. Do not drive
faster than 50 mph (80 km / h).
Drive to the side of the road and se-
lect a higher vehicle level. Depending
on the type of malfunction, this may
raise the vehicle’s level.
There is otherwise danger of an accident.
Visit workshop
The system is functional only to a limited
extent.
The system display or the system is mal-
functioning.
Do not drive faster than 50 mph
(80 km / h).
Have the vehicle checked at an autho-
rized Mercedes-Benz Center.
Page 419 of 506
417 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See your autho-
rized Mercedes-Benz Center for headlamp
adjustment.
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
iSubstitute bulbs will be brought into
use when lamps malfunction. Observe
the messages in the multifunction dis-
play (
page 392).
Page 421 of 506
419 Practical hints
Replacing bulbs
Notes on bulb replacement
Use only 12 volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not light
up, visit an authorized Mercedes-Benz
Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Center:
Additional turn signals in the exterior
rear view mirrors
High mounted brake lamp
Xenon* lamps
Front fog lamps
Rear lamps (except license plate
lamps)
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
iHave the headlamp adjustment
checked regularly.
Page 436 of 506
434 Practical hintsBatteries
Disconnecting the battery
Depress parking brake firmly or move
gear selector lever to positionP.
Turn off all electrical consumers.
Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start/stop button until
the engine shuts off.
Open the driver’s door.
Open the trunk.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact your au-
thorized Mercedes-Benz Center for
further information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Warning!
G
The SBC brake system requires electrical
power to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. The same applies if
battery is disconnected. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes may only be applied to
the front wheels. Stopping distance is in-
creased! Adjust your driving style according-
ly. For more information, refer to “SBC brake
system” (
page 90).
Warning!
G
With a disconnected battery
you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect
the gear selector lever will remain
locked in positionP
