2007 MERCEDES-BENZ E550 4MATIC Owner's Manual

408 Practical hintsWhat to do if …Display message
Possible cause/consequence
Possible solution
Check tires
Then restart
Run Flat Indicator
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 pressure is set
for each tire.

Then reactivate the Run Flat Indicator.
Run Flat Indicator
inoperative
The Run Flat Indicator is malfunctioning.

Have the Run Flat Indicator checked by an authorized
Mercedes-Benz Center.
The Run Flat Indicator has been switched off
due to an error.
Tire pressure
Check tires
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. Observe the traffic sit-
uation around you.

Check and adjust tire inflation pressure as required
(page 342).

If necessary, change the wheel (
page 452).

Reactivate the Run Flat Indicator after adjusting the tire
inflation pressure values (
page 344).

409 Practical hints
What to do if …
Display message
Possible cause/consequence
Possible solution
Tire pressure is
only displayed
after driving for
a few minutes
Vehicles with Advanced TPMS*:
The tire inflation pressure is being checked.

Drive the vehicle for a few minutes.
Tire pressure
monitor
inoperative
The Advanced TPMS* (Canada only) is
malfunctioning.

Have the Advanced TPMS* checked by an authorized
Mercedes-Benz Center.
Tire pressure
monitor
inoperative
No wheel sensors
There are wheels without appropriate wheel
sensors mounted (e.g. winter tires).

Have the Advanced TPMS* checked by an authorized
Mercedes-Benz Center.

Have the appropriate wheel sensors installed by an
authorized Mercedes-Benz Center.
Tire pres. monitor
No wheel sensors
One or more sensors malfunction (e.g. bat-
tery in one or more wheel sensor is empty).
One or more wheels without appropriate
wheel sensors mounted (e.g. spare tire).

Have the Advanced TPMS* checked by an authorized
Mercedes-Benz Center.

Have the wheel sensors installed by an authorized
Mercedes-Benz Center.
The tire pressure for the respective tire is shown in the
multifunction display.

410 Practical hintsWhat to do if …Display message
Possible cause/consequence
Possible solution
Tire pressure
monitor
currently unavailable
The Advanced TPMS* is unable to monitor
the tire pressure due to

a nearby radio interference source.


excessive wheel sensor temperatures.
As soon as the causes for the malfunction are no longer
present, the Advanced TPMS* automatically becomes ac-
tive again after a few minutes driving.
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.

411 Practical hints
What to do if …
Symbol messagesDisplay symbol
Display message
Possible cause/consequence
Possible solution
#
The battery is no longer charging.
Possible causes:

alternator malfunctioning


broken poly-V-belt
Do not forget that the brake system re-
quires electrical energy and may be oper-
ating with restricted capability.
Considerably greater brake pedal force is
required and the stopping distance is in-
creased.

Stop immediately in a safe location or
as soon as it is safe to do so and
check the poly-V-belt.
If it is broken:

Do not continue to drive. Otherwise
the engine will overheat due to an in-
operative water pump which may re-
sult in damage to the engine. Notify
an authorized Mercedes-Benz Center.
If it is intact:

Drive immediately to the nearest au-
thorized Mercedes-Benz Center. Ad-
just driving to be consistent with
reduced braking responsiveness.
There is a malfunction in the electronic
system.

Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.

412 Practical hintsWhat to do if …Display symbol
Display message
Possible cause/consequence
Possible solution
#
Battery/Alternator
Stop vehicle
The battery is malfunctioning.
The brake system requires electrical en-
ergy and therefore has only limited oper-
ation. Considerably greater brake pedal
force is required and the stopping dis-
tance is increased.

Stop the vehicle in a safe location as
soon as it is safe to do so. Adjust driv-
ing to be consistent with reduced
braking responsiveness.

Notify an authorized Mercedes-Benz
Center.
Low voltage
Start engine
The battery has insufficient voltage.

Start the engine (
page 52).
(
Right rear backrest
not locked
The rear seat backrest is not engaged.

Adjust the rear seat backrest until it is
fully engaged in position.
Left rear backrest
not locked
The rear seat backrest is not engaged.

Adjust the rear seat backrest until it is
fully engaged in position.
2
Brakepad wear
The brake pads have reached their wear
limit.

Have the brake pads replaced as soon
as possible.
!
Brake pad thickness must be visually in-
spected by a qualified technician at the intervals
specified in the Maintenance Booklet.

413 Practical hints
What to do if …
Display symbol
Display message
Possible cause/consequence
Possible solution
(USA only);(Canada only)3
EBV, ABS, ESP
inoperative
See Operator’s Man.
ABS, ESP
®, EBP as well as PRE-SAFE
®
have switched off due to a malfunction.
BAS is also switched off.
The brake system is still functioning nor-
mally but without the ABS, BAS, ESP
® and
PRE-SAFE
® available.

Continue driving with added caution.

Adjust driving to be consistent with
reduced braking responsiveness.

Visit an authorized Mercedes-Benz
Center as soon as possible.
Release parking
brake
You are driving with the parking brake
set.

Release the parking brake
(page 55).
Check
brake fluid level
There is insufficient brake fluid in the
reservoir.

Risk of accident! Stop the vehicle in a
safe location 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
problem.
Warning!
G
Driving with the message
Check brake
fluid level
displayed can result in an ac-
cident. Have your brake system checked im-
mediately.
Do not add brake fluid before checking the
brake system. Overfilling the brake fluid res-
ervoir can result in spilling brake fluid 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.

414 Practical hintsWhat to do if …Display symbol
Display message
Possible cause/consequence
Possible solution
ú
(USA only)
±
(Canada only)
Visit workshop
There may be a malfunction in the:

fuel injection system


ignition system


exhaust system


fuel system

Have the measuring system
checked by an authorized
Mercedes-Benz Center.
H
Top up coolant
See Operator’s Manual
The coolant level is too low.

Add coolant (
page 330).

If you have to add coolant frequent-
ly, 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 could 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
Limited Warranty.
Do not drive without sufficient amount of coolant
in the cooling system. The engine will overheat
causing major engine damage.

415 Practical hints
What to do if …
During severe operation conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbol
Display message
Possible cause/consequence
Possible solution
•
Coolant
Stop, turn engine off
The coolant is too hot.

Stop the vehicle in a safe location or as
soon as it is safe to do so and immediate-
ly turn off the engine.

Only start the engine again after the
message disappears. You could other-
wise damage the engine.

Apply the parking brake (
page 62).

Observe the coolant temperature indica-
tor in the instrument cluster (
page 27).
If the temperature rises again:

Contact an authorized
Mercedes-Benz Center immediately.
Warning!
G
Driving when your engine is overheated can
cause some fluids which may have leaked
into the engine compartment to catch fire.
You could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by
opening the engine hood. Stay away from
the engine if you see or hear steam coming
from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of
the vehicle and do not stand near the vehicle
until the engine has cooled down.
!
The engine should not be operated with the
coolant temperature above 248°F (120°C). Do-
ing so may cause serious damage which is not
covered by the Mercedes-Benz Limited
Warranty.