2005 MERCEDES-BENZ S CLASS inflation pressure

374 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
H
TIRE PRES., RF
CAUTION, TIRE PRES.
The right front tire is deflating.

Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.

Change the wheel (
page 398).

Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., RF
CHECK TIRES!
The right front tire inflation pressure is
low.

Carefully bring the vehicle to a halt.

Check and correct the tire inflation pres-
sure (
page 307).

If necessary, change the wheel
(page 398).

Have the damaged wheel repaired or re-
placed 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.

375 Practical hints
What to do if …?
Display
Possible cause
Possible solution
H
TIRE PRES., LR
CAUTION, TIRE PRES.
The left rear tire is deflating.

Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.

Change the wheel (
page 398).

Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., LR
CHECK TIRES!
The left rear tire inflation pressure is low.

Carefully bring the vehicle to a halt.

Check and correct the tire inflation pres-
sure (
page 307).

If necessary, change the wheel
(page 398).

Have the damaged wheel repaired or re-
placed 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.

376 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
H
TIRE PRES., RR
CAUTION, TIRE PRES.
The right rear tire is deflating.

Bring the vehicle to a halt, avoiding
abrupt braking maneuvers. Observe the
traffic situation around you.

Change the wheel (
page 398).

Have the damaged wheel repaired or re-
placed at an authorized Mercedes-Benz
Center.
TIRE PRES., RR
CHECK TIRES!
The right rear tire inflation pressure is
low.

Carefully bring the vehicle to a halt.

Check and correct the tire inflation pres-
sure (
page 307).

If necessary, change the wheel
(page 398).

Have the damaged wheel repaired or re-
placed 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.

377 Practical hints
What to do if …?
Display
Possible cause
Possible solution
TIRE PRES. MONITOR
REACTIVE AFTER
CORRECTING PRESSURE
There was a tire inflation pressure warning
message.
The yellow warning lamp for the tire infla-
tion pressure monitor comes on and you
have not reactivated the system since the
last tire inflation pressure check.

Activate the tire inflation pressure monitor
after correcting the tire inflation pressure val-
ues (
page 307).
TIRE PRES. MONITOR
REACTIVATED
The tire inflation pressure monitor is using
the current pressure values as the basis for
monitoring.
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.

378 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
TIRE PRES. MONITOR
CURRENTLY
UNAVAILABLE
The tire inflation pressure monitor* is un-
able to monitor the tire inflation pressure
due to:

the presence of several when sensors in
the vehicle


excessive wheel sensor temperatures


a nearby radio interference source


unrecognized wheel sensors installed

Remove any extra wheel sensors from the ve-
hicle.
As soon as the causes of the malfunction have
been removed, the tire inflation pressure moni-
tor automatically becomes active again.
TIRE PRES. MONITOR
NOT OPERATIONAL DRIVE TO WORKSHOP
The tire inflation pressure monitor or a
wheel sensor is malfunctioning.

Have the tire inflation pressure monitor
checked by an authorized Mercedes-Benz
Center.
A wheel without proper sensor was in-
stalled.

Have the wheels checked.
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.

382 Practical hintsWhere will I find ...?Spare wheel S 55 AMG and Sport
Package*
In case of a flat tire, you may temporarily
use the spare wheel when observing 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.For more information, see “Rims and tires”
(
page 422).
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a mounted spare
wheel. Adapt your driving style accordingly.
Never operate the vehicle with more than
one spare wheel mounted.
The spare wheel is for temporary use only.
When driving with spare wheel mounted, en-
sure proper tire inflation pressure and do
not exceed vehicle speed of 50 mph
(80 km).
The spare wheel rim is for temporary use
only. Use for over a total of 12 000 miles
(20 000 km) (aggregate of all uses) may
cause wheel rim failure leading to an acci-
dent and possible injuries.
The spare wheel should only be used tempo-
rarily and replaced with a regular road wheel
as quickly as possible.

398 Practical hintsFlat tirePreparing the vehicle
Park the vehicle as far as possible from
moving traffic on a hard surface.

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 toP.
Vehicles with SmartKey:

Turn off the engine (
page 57).

Remove the SmartKey from the starter
switch.Vehicles with SmartKey with
KEYLESS-GO*:

Turn off the engine by pressing the
KEYLESS-GO* button on the gear se-
lector lever once (
page 57).

Open the driver’s door (this puts the
starter switch in position0, 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
iOpen the door only when conditions
are safe to do so.
Warning!
G
Never operate the vehicle with more than
one spare wheel mounted.
The spare wheel rim is for temporary use
only. Use for over a total of 12 000 miles
(20 000 km) (aggregate of all uses) may
cause wheel rim failure leading to an acci-
dent and possible injuries.
The spare wheel should only be used tempo-
rarily and replaced with a regular road wheel
as quickly as possible.
S55AMG and Sport Package* only:
The spare wheel is for temporary use only.
When driving with spare wheel mounted, en-
sure proper tire inflation pressure and do
not exceed vehicle speed of 50 mph
(80 km/h).

402 Practical hintsFlat tireLowering 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
110 lb-ft (150 Nm).

Before storing the jack in the trunk, it
should be fully collapsed, with handle
folded in.

Place the wheel bolt wrench, alignment
bolt and jack back in the vehicle tool kit
in the trunk and close the covering lid.Replacing jack support tube cover

Slide tongue of cover under the upper
edge of the tube opening.

Applying even pressure, press cover
until it snaps into place. Be careful not
to damage the locking tabs or clamp
the plastic retaining strap.
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
110 lb-ft (150 Nm).
!You can also screw the faulty wheel
down into the spare wheel well in the
trunk.
Do not activate the tire inflation pres-
sure monitor* until the depressurized
tire is no longer in the vehicle.