Page 549 of 705
548 Practical hintsWhat to do if …?Problem
Possible cause/consequence
Suggested solution
±
The yellow engine malfunc-
tion indicator lamp comes
on while driving.
A loss of pressure has been detected in the
fuel system. The fuel cap may not be closed
properly or the fuel system may be leaky.
Check the fuel cap.
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an au-
thorized Mercedes-Benz Center.
Your fuel tank is empty.
After refueling, start, turn off, and re-
start the engine three or four times in
succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.
Page 551 of 705
550 Practical hintsWhat to do if …?Problem
Possible cause/consequence
Suggested solution
v
The 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 72).
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 557).
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 489).
<
The red seat belt telltale comes
on and a warning chime sounds
for approximately 6 seconds af-
ter starting the engine with all
doors closed.
The seat belt telltale reminds you and your
passengers to fasten your seat belts before
driving off.
Fasten your seat belts.
The seat belt telltale goes out and the
warning chime stops sounding.
Page 553 of 705
552 Practical hintsWhat to do if …?Problem
Possible cause/consequence
Suggested 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 a malfunction of the SRS is indi-
cated as outlined above, the SRS may not be
operational. For your safety, we strongly
recommend that you visit an authorized
Mercedes-Benz Center immediately to have
the system checked; otherwise the SRS may
not be activated when needed in an acci-
dent, which could result in serious or fatal
injury, or it might deploy unexpectedly and
unnecessarily which could result in an acci-
dent and/or injury to you or to others.
Page 561 of 705
560 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
DISTRONIC PLUS
currently unavailable
See Oper. Manual
You attempt to activate DISTRONIC Plus*
even though you have switched off the ra-
dar sensors* on the vehicle.
Check if the radar sensors* may be switched on (
page 256).
Switch on the radar sensors* using the instrument cluster
control system.
DISTRONIC Plus* is switched off and is
temporarily unavailable.
DISTRONIC Plus* is deactivated if:
the DISTRONIC Plus* cover in the radia-
tor grille is dirty
the radar sensors* does not sense any
other vehicles or objects, i.e. road sign
or similar to this, for a long time
the system is overheated
its function is impaired as a result of
heavy precipitation or fog
the battery voltage is insufficient
Clean the DISTRONIC Plus* cover in the radiator grille
(page 537).
Restart the vehicle.
Try activating DISTRONIC Plus* again later.
Wait until the system cools down or the battery recovers.
DISTRONIC Plus* will be operational again without you needing to
restart the engine if:
the dirt (e.g. slush) loosens while you are driving
the system detects that the sensors* are fully available again
the message in the multifunction display disappears
DISTRONIC Plus* is switched off because
the radar sensor system* is temporarily in-
operative due to electromagnetic interfer-
ence near television and radio transmitter
stations, toll stations, speed measuring sys-
tems, etc.
Wait until the message in the multifunction display disappears.
Page 568 of 705
567 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Park Assist
inoperative
Park Assist* is unavailable due to a mal-
function.
Visit an authorized Mercedes-Benz Center as soon as possible.
PRE-SAFE
inoperative
See Owner's Manual
PRE-SAFE
® itself has failed. All other occu-
pant safety systems, such as the air bags,
are still available.
Visit an authorized Mercedes-Benz Center as soon as possible.
Check tires
then restart
Run Flat Indicator
There was a warning message about a loss
in tire inflation pressure and the Run Flat In-
dicator* has not been restarted yet.
Check and adjust tire inflation pressure as required
(page 514).
Then restart the Run Flat Indicator* (
page 515).
Radar sensor
deactivated
See Oper. Manual
You attempt to activate DISTRONIC Plus*
or Park Assist* even though you have
switched off the radar sensors* on the vehi-
cle.
Check if the radar sensors* may be switched on (
page 256).
Switch on the radar sensors* using the instrument cluster
control system.
Run Flat Indicator
inoperative
The Run Flat Indicator* is malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as possible.
Service X
due
Service X must be carried out (
page 532).
Have the maintenance service carried out by an authorized
Mercedes-Benz Center.
Service X exceeded
by X days
by XXX mls (km)
Service X must be carried within the next ...
or before you have driven ... miles (kilome-
ters) (
page 532).
Have the maintenance service carried out by an authorized
Mercedes-Benz Center as soon as possible.
Shift to P or N
to start engine
You have attempted to start the engine
while the automatic transmission was set to
position R or D.
Shift the automatic transmission to P or N (
page 367).
Page 574 of 705
573 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Check brake
fluid level
There is insufficient brake fluid in the reser-
voir.
Risk of accident! Stop the vehicle in a safe lo-
cation as soon as it is safe to do so and notify
an authorized Mercedes-Benz Center. Do not
add brake fluid! This will not solve the prob-
lem.
(USA only)(Canada only)Warning!
G
Driving with the message “Check brake fluid
level ” displayed can result in an accident.
Have your brake system checked immedi-
ately. Do not add brake fluid before check-
ing the brake system. Overfilling the brake
fluid reservoir can result in spilling brake flu-
id on hot engine 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.
Page 584 of 705
583 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Inoperative
See Oper. Manual
S 600 only:
ESP
® a s w e l l a s P R E - S A F E
® are switched off
due to a malfunction. In addition, the v
and ; (USA only) or 3(Canada only)
warning lamps come on in the instrument
cluster.
Brake force assistance is impaired and is
sustained through an electric substitute
function as long as the engine is running.
The brake system continues to function
normally. You will feel a pulsating effect at
the brake pedal while braking.
Continue driving with added caution.
Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
Failure to follow these instructions increases the
risk of an accident.
Page 588 of 705
587 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Coolant,
please refill
See Oper. Manual
The coolant level is too low.
Add coolant (
page 497).
If you have to add coolant frequently, have
the cooling system checked by an authorized
Mercedes-Benz Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.!
Do not ignore the low engine coolant level
warning. Extended driving with the message and
symbol displayed may cause serious engine
damage not covered by the Mercedes-Benz Lim-
ited Warranty.
Do not drive without a sufficient amount of cool-
ant in the cooling system. The engine will over-
heat, causing major engine damage.
