Page 665 of 761

664 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Tele Aid
inoperativeOne or more main functions of the Tele Aid
system are malfunctioning.Have the Tele Aid system checked by an au-
thorized Mercedes-Benz Center.
Tire pressure
Caution, tire defectVehicles with Advanced TPMS*:
One or more tires are deflating.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(
page 395).
If necessary, change the wheel (page 686).
Caution
Tire defectVehicles with Advanced TPMS*:
One or more tires are deflating. The respec-
tive tire is shown in the multifunction dis-
play.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(
page 395).
If necessary, change the wheel (page 686).
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. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Page 666 of 761

665 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Tire pressure
Check tiresVehicles with Advanced TPMS*:
The pressure is too low in one or more tires.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(
page 395).
Check and adjust tire inflation pressure as
required (
page 561).
If necessary, change the wheel (page 686).
Check tiresVehicles with Advanced TPMS*:
The pressure is too low in one or more tires.
The respective tire is shown in the multi-
function display.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
(
page 395).
Check and adjust tire inflation pressure as
required (
page 561).
If necessary, change the wheel (page 686).
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. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Page 667 of 761
666 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Wheel sensor(s)
missingOne or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without wheel sensors
mounted (e.g. spare tire).
No pressure value is shown on the multi-
function display for the tire in question.Have the Advanced TPMS* checked by an
authorized Mercedes-Benz Center.
Have the wheel sensors installed by an
authorized Mercedes-Benz Center.
The tire pressure for the respective tire is
shown in the multifunction display after a few
minutes driving.
Tire pressure
Please rectifyVehicles with Advanced TPMS*:
The pressure is too low in one or more tires.
Or the tire pressures of the individual
wheels differ too radically from one anoth-
er.Check and adjust tire inflation pressure as
required (
page 561).
Page 668 of 761
667 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Shift to 'P'You have attempted to turn off the engine
with the KEYLESS-GO* start/stop button
and opened the driver’s door with the auto-
matic transmission not shift to park
positionP.Shift the automatic transmission to park
positionP (
page 399).
or
Close the driver’s door.
You are driving with the trunk open.Close the trunk (page 480).
Washer fluid,
please refillThe water level has dropped to approx.
1.1 US qts (1.0 l).Add washer fluid (page 548).
Page 669 of 761

668 Practical hints
Where will I find ...?
First aid kit
The first aid kit is located in the storage
compartment under the front passenger
seat.
1Tab
2Cover
Pull tab1 upward.
Fold the covering forward in the direc-
tion of arrow.
Remove the first aid kit.
Vehicle jack, vehicle tool kit, luggage
bowl, Minispare wheel
The vehicle jack, Minispare wheel, the ve-
hicle tools, and the luggage bowl are
stored in the compartment underneath the
trunk floor.
Lift up trunk floor cover and engage
trunk floor handle in upper edge of
trunk.
You can now remove the tools and ac-
cessories.The vehicle tool kit includes:
Towing eye bolt
Wheel wrench with socket wrench
Alignment bolt
Pair of gloves
Fuse extractor1
Fuse chart for the main fuse box
Spare fuses1
Collapsible wheel chock
Release tool for mechanically releasing
the electronic parking brake
The spare wheel bolts are fixed at the
Minispare wheel.
!Always keep the storage compartment un-
der the front passenger seat closed while the ve-
hicle is in motion.
iCheck expiration dates and contents for
completeness at least once a year and replace
missing/expired items.
!To prevent damage, always disengage trunk
floor handle from trunk lid and lower trunk floor
before closing the trunk.
1Depending on vehicle production date.
Page 670 of 761

669 Practical hints
Where will I find ...?
Vehicle jack
Storage position
Remove vehicle jack from its
compartment.
Turn crank handle in direction of arrow
as far as it will go.
Operational position
Turn crank handle clockwise.
Before storing the vehicle jack in its
compartment:
It should be fully collapsed.
The handle must be folded in (storage
position).
Warning!G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly engage the electronic parking brake
and block wheels before raising vehicle with
jack.
Do not disengage electronic parking brake
while the vehicle is raised. Be certain that
the jack is always vertical (plumb line) when
in use, especially on hills. Always try to use
the jack on level surface. Make sure the jack
arm is fully seated in the jack take-up brack-
et. Always lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.
Page 671 of 761
670 Practical hints
Where will I find ...?
Minispare wheel
The Minispare wheel is stored in the com-
partment underneath the trunk floor.
1Minispare wheel with spare wheel bolts
in container on wheel rim
2Luggage bowl
3Vehicle tool kit, jack and collapsible
wheel chock
Removing the Minispare wheel
Turn luggage bowl2 counterclock-
wise.
Remove Minispare wheel1.Setting up the collapsible wheel chock
The collapsible wheel chock serves to
additionally secure the vehicle, e.g. while
changing the wheel.
1Tilt the plates upward
2Fold the lower plate outward
3Insert the plate
Tilt both plates upward1.
Fold the lower plate outward2.
Guide the tabs of the lower plate all the
way into the openings of the base
plate3.
For information on where to place wheel
chocks when changing a wheel, see “Lift-
ing the vehicle” (
page 687).
Page 672 of 761

671 Practical hints
Unlocking/locking in an emergency
Unlocking/locking in an emergency
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or KEYLESS-GO*, unlock the
driver’s door and the trunk using the me-
chanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in the direction of
arrow.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
Insert mechanical key2 into the driv-
er’s door lock until it stops.
Turn mechanical key2 counterclock-
wise to position 1 and hold it there.
Pull the door handle until the locking
knob moves up.
The driver’s door is unlocked.
Pull the door handle once more to open
the driver’s door.
iUnlocking the vehicle with the mechanical
key and opening the driver’s door or the trunk
with the mechanical key will trigger the anti-theft
alarm system (
page 81).
To cancel the alarm, insert the SmartKey or
SmartKey with KEYLESS-GO* in the starter
switch.
1Unlocking
2Mechanical key