Page 400 of 506
398 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Reactivate
tire pres. monitor
after corr. pres.
There was a tire pressure warning mes-
sage.
The yellow warning lamp for the tire pres-
sure monitoring system comes on and
you have not reactivated the system
since the last tire pressure warning mes-
sage.
Reactivate the tire pressure monitor-
ing system after correcting the tire
pressure values (
page 324).
Tire pres. monitor
deactivated
Drive to workshop
The tire pressure monitoring system is
malfunctioning.
A wheel without proper sensor was in-
stalled.
Have the tire pressure monitoring sys-
tem checked by an authorized
Mercedes-Benz Center.
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 401 of 506
399 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
H
Tire pres.
Please rectify
The pressure is too low in one or more
tires.
Check and correct tire inflation pressure as
required (
page 322).
Caution
Tire pressure
One or more tires 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 re-
placed at an authorized Mercedes-Benz Cen-
ter.
Tire pres.
Check tire
The tire inflation pressure in one or
more tires is already below the mini-
mum value.
The tire inflation pressure in one or
more tires is low.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Check the tire.
Check and correct the tire pressure as re-
quired.
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 402 of 506
400 Practical hintsWhat to do if …Display symbol
Display messages
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 …
Display symbol
Display messages
Possible cause
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
Display messages
Possible cause
Possible solution
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 431 of 506
429 Practical hints
Flat tire
In the case of a flat tire, you may tempo-
rarily use the Minispare wheel when ob-
serving the following restrictions:
Do not exceed a vehicle speed of
50 mph (80 km / h).
Drive to the nearest tire repair facility
to have the flat tire repaired or re-
placed as appropriate.
Do not operate vehicle with more than
one spare wheel mounted.Inflating the collapsible tire
Take the electric air pump out of the
trunk (
page 407).
1Flap
2Air pump switch
3Electrical plug
4Air hose with pressure gauge and vent
screw
5Union nut
Open flap 1 on the air pump.
Pull out electrical plug 3 and air hose
with pressure gauge 4.
Make sure the vent screw on air hose is
closed.
Remove the valve cap from the tire
valve.
Warning!
G
The dimensions of the Minispare wheel and
the collapsible tire are different from those
of the road wheels. As a result, the vehicle
handling characteristics change when driv-
ing with a Minispare wheel mounted.
The spare wheel should only be used tempo-
rarily, and replaced with a regular road
wheel as quickly as possible.
!Do not lower the vehicle before inflat-
ing the collapsible tire. Otherwise the
rim may be damaged.Warning!
G
Observe instructions on air pump label.
Page 432 of 506
430 Practical hintsFlat tire
Screw air hose 4 onto the tire valve.
Insert electrical plug 3 into vehicle ci-
gar lighter socket.
Turn the SmartKey in the ignition to
position1.
or
Press the KEYLESS-GO* start/stop
button on the gear selector lever once
without depressing the brake pedal.
Press I on electric air pump switch 2.
The electric air pump should now
switch on and inflate the tire.
Inflate the tire to approx. 51 psi
(3.5 bar).
This takes about five minutes for the
collapsible tire. Air hose 4 and union
nut5 can become hot duration infla-
tion. Exercise proper caution to avoid
burning yourself when using the equip-
ment.
Press 0 on electric air pump switch 2.
Turn the SmartKey in the ignition to
position0.
or
Press KEYLESS-GO* start/stop button
on the gear selector lever twice without
depressing the brake pedal.
The electric air pump should now be
switched off.
If the tire inflation pressure is above
51 psi (3.5 bar), release excess tire in-
flation pressure using the vent screw.
Detach the electric air pump.
Stow electrical plug 3 and air hose 4
behind flap 1 and place the air pump
back in the trunk.
!Do not operate the air pump longer
than eight minutes without interrup-
tion. Otherwise it may overheat.
You may operate the air pump again af-
ter it has cooled off.
Warning!
G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Page 433 of 506
431 Practical hints
Flat tire
Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
Remove the jack.
1-5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of 96 lb-ft
(130 Nm).
Before storing the jack in the trunk, it
should be fully collapsed.Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
96 lb-ft (130 Nm).
iWrap the damaged wheel in the protec-
tive film that comes with the spare
wheel and put the wheel in the trunk.
You can also place the damaged wheel
down into the spare wheel well. In this
case, you must stow the holder from
the spare wheel well in the trunk.
Do not activate the tire pressure moni-
toring system until the depressurized
tire is no longer in the vehicle.
