2008 MERCEDES-BENZ S550 4MATIC warning

600 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
-
vThe yellow ABS malfunc-
tion indicator lamp and
the yellow ESP
® warning
lamp come on while the
engine is running and an
acoustic warning sounds.
ABS and ESP® are switched off due to a
malfunction.
The BAS, EBP and PRE-SAFE
® are also
switched off.
The brake system is still functioning nor-
mally but without the ABS available.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Read and observe messages in the mul-
tifunction display (
page 612).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
Failure to follow these instructions increas-
es the risk of an accident.
0
(USA only)
!
(Canada only)
The red indicator lamp
for the electronic parking
brake flashes and/or the
yellow warning lamp for
the electronic parking
brake is on.The electronic parking brake is malfunction-
ing or defective.Read and observe messages in the mul-
tifunction display (
page 612).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.

601 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
;
(USA only)
3
(Canada only)
The red brake warning
lamp comes on while the
engine is running and an
acoustic warning sounds.There is insufficient brake fluid in the reser-
voir.Risk of accident!
Carefully stop the vehicle in a safe loca-
tion or as soon as it is safe to do so.
Engage the electronic parking brake
(
page 395).
Contact an authorized Mercedes-Benz
Center.
Do not add brake fluid! This will not
solve the problem.
Warning!G
Driving with the brake warning lamp illumi-
nated can result in an accident. Have your
brake system checked immediately if the
brake warning lamp stays on. Do not add
brake fluid before checking the brake
system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot en-
gine parts and the brake fluid catching fire.
You can be seriously burned.
!If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or
below, have the brake system checked for brake
pad thickness and leaks.

604 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
lPRE-SAFE® Brake*: The red dis-
tance warning lamp comes on
while driving.You are too close to the vehicle in front of
you to maintain selected speed.Apply the brakes immediately to in-
crease the following distance.
lDISTRONIC Plus* or PRE-SAFE®
Brake*: The red distance warn-
ing lamp comes on while driving
and an acoustic warning
sounds.You are gaining too rapidly on the vehicle
ahead of you.Apply the brakes immediately.
DISTRONIC Plus* or PRE-SAFE® Brake* has
recognized a stationary obstacle on your
probable line of travel.Apply the brakes immediately.
Carefully observe the traffic situation.
You may need to brake or maneuver to
avoid hitting an obstacle.
vThe yellow ESP® warning lamp
flashes while driving.The ESP® or electronic traction system has
come into operation because of detected
traction loss in at least one tire.
Cruise control and DISTRONIC Plus* are de-
activated.When driving off, apply as little throttle
as possible.
While driving, ease up on the accelera-
tor.
Adapt your speed and driving to the pre-
vailing road and weather conditions.
Do not deactivate the ESP®. Exceptions:
(
page 73).
Failure to follow these instructions increas-
es the risk of an accident.

605 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
vThe yellow ESP® warning lamp
comes on while the engine is
running.The ESP® is deactivated.
Risk of accident!
Adapt your speed and driving to the prevail-
ing road, weather, and traffic conditions.Switch the ESP® back on (page 75).
Exceptions: (
page 73).
If the ESP
® cannot be switched back on:
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
ESP® is switched off due to a malfunction.
Risk of accident!
Adapt your speed and driving to the prevail-
ing road, weather, and traffic conditions.Continue driving with added caution.
Read and observe messages in the mul-
tifunction display (
page 612).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon as
possible.
The yellow fuel tank reserve warning lamp
in the fuel gauge comes on while driving.The fuel level has gone below the reserve
mark.Refuel at the next gas station
(
page 538).
on for a maximum of 6 seconds
after starting the engine.The seat belt telltale reminds you and your
passengers to fasten your seat belts before
driving off.Fasten your seat belts.
Regardless of whether the seat belts are
fastened or not, the seat belt telltale al-
ways comes on and remains lit for
6 seconds after starting the engine.

606 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
maximum of 6 seconds after
starting the engine.You have forgotten to fasten your seat belt.Fasten your seat belt.
The warning chime stops sounding.
on while the vehicle is standing
still and the engine is running or
during driving.You and/or your front passenger have for-
gotten to fasten your seat belts.Fasten your seat belts.
The seat belt telltale goes out.
There are items placed on the front passen-
ger seat and therefore the system senses
the front passenger seat as being occupied.Remove the items from the front pas-
senger seat and put them in a safe
place.
The seat belt telltale goes out.
telltale flashes and you addition-
ally hear an intermittent warning
chime with increasing intensity.The vehicle’s speed once exceeded 15 mph
(25 km/h) and you and/or your front pas-
senger have forgotten to fasten your seat
belts.Fasten your seat belts.
The seat belt telltale goes out and the
warning chime stops sounding.
There are items placed on the front passen-
ger seat and therefore the system senses
the front passenger seat as being occupied.Remove the items from the front pas-
senger seat and put them in a safe
place.
The seat belt telltale goes out and the
warning chime stops sounding.
iAfter 60 seconds with an unfastened seat
belt the warning chime stops sounding and the
seat belt telltale illuminates continuously.The seat belt telltale will only go out if both, the
driver and front passenger’s seat belt arefastened, or the vehicle is standing still and a
front door is opened.

607 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
=The red SRS indicator lamp
comes on while the engine is
running.There is a malfunction in the supplemental
restraint systems. The air bags or emergen-
cy tensioning devices (ETDs) could deploy
unexpectedly or fail to activate in an acci-
dent.Drive with added caution to the nearest
authorized Mercedes-Benz Center.
Warning!G
In the event that a malfunction of the SRS is
indicated as outlined above, the SRS may
not be operational. For your safety, we
strongly recommend that you contact an au-
thorized Mercedes-Benz Center immediate-
ly to have the system checked; otherwise
the SRS may not be deployed when needed
in an accident, which could result in serious
or fatal injury, or it might deploy unexpect-
edly and unnecessarily which could result in
an accident and/or injury to you or to oth-
ers.

609 Practical hints
What 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.
USA only:
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
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.

610 Practical hints
What to do if …?
Air bag off indicator lamp
ProblemPossible cause/consequenceSuggested solution
75
The front passenger front
air bag off indicator lamp
illuminates and remains il-
luminated with the weight
of a typical adult or some-
one larger than a small in-
dividual on the front
passenger seat.
The system is malfunctioning.Have the system checked as soon as possible by an authorized
Mercedes-Benz Center.
Also read and observe any messages in the multifunction display
and follow corrective steps (
page 612).
Warning!G
If the59indicator lamp
illuminates and remains illuminated with the
weight of a typical adult or someone larger
than a small individual on the front passen-
ger seat, do not have any passenger use the
front passenger seat until the system has
been repaired.