Page 352 of 481

351 Practical hints
What to do if …
Problem
Possible cause/consequence
Suggested solution
H
(USA only)
Combination low tire
pressure/TPMS malfunction tell-
tale for the TPMS illuminates
continuously.
(Canada only)
Low tire pressure telltale for the
Advanced TPMS* illuminates
continuously.
The TPMS (USA only) or Advanced TPMS*
(Canada only) detects a loss of pressure in at
least one tire.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers. Observe the traffic situa-
tion around you.
Read and observe messages in the
multifunction display (
page 356).
If the tire inflation pressure in the respec-
tive tire(s) has (have) been corrected, the
combination low tire pressure/TPMS
malfunction telltale goes out after few
minutes driving.
H
(USA only)
Combination low tire
pressure/TPMS malfunction tell-
tale for the TPMS flashes for
60 seconds and then stays illu-
minated.
There is a malfunction in the TPMS.
Read and observe messages in the
multifunction display (
page 356).
Have the TPMS checked by an
authorized Mercedes-Benz Center.
After the malfunction has been remedied
the combination low tire pressure/TPMS
malfunction telltale goes out after few
minutes driving.
Page 353 of 481

352 Practical hintsWhat to do if …Warning!
G
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or the tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or the tire inflation pressure label,
you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has
been equipped with a tire pressure monitor-
ing system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illu-
minates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significant-
ly under-inflated tire causes the tire to over-
heat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehi-
cle’s handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driv-
er’s responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately
one minute and then remain continuously
illuminated. This sequence will continue
upon subsequent vehicle start-ups as long
as the malfunction exists. When the mal-
function indicator is illuminated, the system
may not be able to detect or signal low tire
pressure as intended.
TPMS malfunctions may occur for a variety
of reasons, including the installation of in-
compatible replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your vehicle
to ensure that the replacement or alternate
tires and wheels allow the TPMS to continue
to function properly.
Page 368 of 481

367 Practical hints
What to do if …
Display message
Possible cause/consequence
Possible solution
Run Flat Indicator
inactive
Canada only:
Run Flat Indicator is malfunctioning.
Have the Run Flat Indicator checked by an au-
thorized Mercedes-Benz Center.
Check tires
Then reactivate
Run Flat Indicator
Canada only:
There was a warning message about
a loss in the tire inflation pressure
and the Run Flat Indicator has not
been reactivated yet.
Make sure that the correct tire inflation pres-
sure is set for each tire.
Then reactivate the Run Flat Indicator.
Run Flat Indicator
unavailable
Canada only:
The Run Flat Indicator* has been
switched off due to an error.
Have the Run Flat Indicator checked by an
authorized Mercedes-Benz Center.
Tire pressure
Check tires
Canada only:
The Run Flat Indicator indicates that
the pressure is too low in one or
more tires.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Ob-
serve the traffic situation around you.
Check and adjust tire inflation pressure as
required (
page 302).
If necessary, change the wheel (
page 412).
Reactivate the Run Flat Indicator after adjust-
ing the tire inflation pressure values
(page 305).
Page 369 of 481
368 Practical hintsWhat to do if …Display message
Possible cause/consequence
Possible solution
Tire pressure
displayed only
after driving a
few minutes
Vehicles with Advanced TPMS*:
The tire inflation pressure is being
checked.
Drive the vehicle for a few minutes.
Tire pres. monitor
currently unavailable
The TPMS or Advanced TPMS* is un-
able to monitor the tire pressure due
to
a nearby radio interference
source
excessive wheel sensor temper-
atures
As soon as the causes for the malfunction are
no longer present, the Advanced TPMS* auto-
matically becomes active again after a few
minutes driving.
Tire pres. monitor
inoperative
The TPMS or Advanced TPMS* is
malfunctioning.
Have the TPMS or Advanced TPMS* checked
by an authorized Mercedes-Benz Center.
Page 370 of 481
369 Practical hints
What to do if …
Display message
Possible cause/consequence
Possible solution
Tire pres. monitor
inoperative
No wheel sensors
There are wheels without appropri-
ate wheel sensors mounted (e.g.
winter tires).
Have the TPMS or Advanced TPMS* checked
by an authorized Mercedes-Benz Center.
Have the wheel sensors installed by an
authorized Mercedes-Benz Center.
Tire pres. monitor
Wheel sensor missing
One or more sensors malfunc-
tion (e.g. battery is empty).
One or more wheels without ap-
propriate wheel sensors mount-
ed (e.g. spare tire).
The tire inflation pressure for the re-
spective tire is not shown in the mul-
tifunction display.
Have the TPMS or Advanced TPMS* checked
by an authorized Mercedes-Benz Center.
Have the wheel sensors installed by an
authorized Mercedes-Benz Center.
Vehicles with Advanced TPMS*:
The tire pressure for the respective tire is
shown in the multifunction display.
Page 388 of 481

387 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Caution
Tire defect
One or more tires are deflating.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel (
page 412).
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Check tires
Vehicles with Advanced TPMS*:
The tire pressure in one or more tires
is already below the minimum value.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Check and adjust tire pressure as required.
If necessary, change the wheel (
page 412).
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 exces-
sive heat build-up and possibly a fire.
Page 389 of 481

388 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
H
Please rectify
tire pressure
The pressure is too low in one or more
tires.
Check and correct tire inflation pressure as
required (
page 302).
Tire pressure
Caution, tire defect
One or more tires are deflating.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel (
page 412).
Have the damaged wheel repaired or replaced
at an authorized Mercedes-Benz Center.
Tire pressure
Check tires
Vehicles with Advanced TPMS*:
The tire pressure in one or more tires
is already below the minimum value.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Check and adjust tire pressure as required.
If necessary, change the wheel (
page 412).
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 exces-
sive heat build-up and possibly a fire.
Page 413 of 481

412 Practical hintsFlat tirePreparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flashers.
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake.
Move the gear selector lever to P.
Vehicles with SmartKey:
Turn off the engine (
page 60).
Remove the SmartKey from the starter
switch.Vehicles with KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* button on the gear
selector lever once (
page 60).
Open the driver’s door (this puts the
starter switch in position 0, same as
with the SmartKey removed from the
starter switch). The driver’s door then
can be closed again.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Mounting the spare wheel
i
Open door only when conditions are safe to
do so.
Warning!
G
The dimensions of the spare wheel
(Minispare or collapsible tire) are different
from those of the road wheels. As a result,
the vehicle handling characteristics change
when driving with a spare wheel mounted.
Adapt your driving style accordingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted,
ensure proper tire pressure and do not ex-
ceed a vehicle speed of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the spare wheel
replaced with a regular road wheel.
Never operate the vehicle with more than
one spare wheel mounted.
Do not switch off the ESP
® when a Minis-
pare or collapsible tire is mounted.