2008 MERCEDES-BENZ SL55AMG ESP inoperative

251 Controls in detail
Useful features
The Tele Aid system
(Tele
matic Alarm Identification on De-
mand)
The Tele Aid system consists of three
types of response:

Automatic and manual emergency

Roadside Assistance

Information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and cel-
lular and GPS coverage is available.
The speaker volume of a Tele Aid call can
be adjusted when using the volume control
on the multifunction steering wheel. To
raise, press buttonæ and to lower,
press buttonç or use the volume knob
on your COMAND headunit.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.Shortly after the completion of your Tele
Aid acquaintance call, you will receive a
user ID and password. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock, and
more.
System self-check
Initially, after switching on the ignition,
malfunctions are detected and indicated
(the indicator lamps in the SOS button, the
Roadside Assistance button• and the Information button¡ stay on longer
than 10 seconds or do not come on). The
message
Tele Aid Inoperative appears
for approximately 10 seconds in the multi-
function display.
iThe SOS button is located above the interior
rear view mirror (
page 253).
The Roadside Assistance button• and the
Information button¡ are located below the
center armrest cover (
page 239).
!The Tele Aid system utilizes the cellular
network for communication and the GPS (Global
Positioning System) satellites for vehicle loca-
tion. If either of these signals are unavailable, the
Tele Aid system may not function and if this
occurs, assistance must be summoned by other
means.
Warning!G
If the indicator lamps in the SOS button, in
the Roadside Assistance button, and/or in
the Information button do not come on dur-
ing the system self-check, or if any of these
indicators remain illuminated continuously
in red and/or the message
Tele Aid
Inoperative
is displayed in the multifunc-
tion display after the system self-check,
a malfunction in the system has been
detected.
If a malfunction is indicated as outlined
above, the system may not operate as ex-
pected. Have the system checked at the
nearest Mercedes-Benz Center as soon as
possible.

364 Practical hints
What to do if …
Left displayRight displayPossible cause/consequencePossible solution
ABSABS, ESP
Inoperative
See
Oper. ManualThe ABS and ESP® have switched off
due to a malfunction.
The BAS is also deactivated.
The electro-hydraulic brake system is
still functioning normally but without
the ABS, the ESP
®, and the BAS avail-
able.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
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.
Cruise Control––– MPHYou have attempted to set a speed
below 20 mph (30 km/h).Accelerate to a speed exceeding
20 mph (30 km/h) and set the speed
(
page 215).
The ESP® is switched off.Switch on the ESP® (page 94).
The gear selector lever is set to
position P, R, or N.Move the gear selector lever to position D.
The vehicle is secured with the parking
brake.Release the parking brake (page 55).
Cruise Control
AND SPEEDTRONICInoperativeThe cruise control is malfunctioning.Have the system checked at an authorized
Mercedes-Benz Center as soon as
possible.

365 Practical hints
What to do if …
Left displayRight displayPossible cause/consequencePossible solution
DISTRONIC––– MPHYou have attempted to set a speed
below 20 mph (30 km/h).Accelerate to a speed exceeding
20 mph (30 km/h) and set the speed
(
page 215).
The ESP® is switched off.Switch on the ESP® (page 94).
The gear selector lever is set to
position P, R, or N.Move the gear selector lever or position D.
The vehicle is secured with the parking
brake.Release the parking brake (page 55).
InoperativeDistronic* is malfunctioning or the
display is malfunctioning.Have the system checked at an authorized
Mercedes-Benz Center as soon as
possible.

367 Practical hints
What to do if …
Left displayRight displayPossible cause/consequencePossible solution
ESPESP
Inoperative
See
Oper. ManualThe ESP® has detected a malfunction
and switched off.
The ABS may not be operational.
The electro-hydraulic brake system is
still functioning normally but without
the ESP
® available.
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.
ESP Unavailable
See
Oper. ManualThe ESP® is deactivated because the
power supply has been interrupted.
The electro-hydraulic brake system is
still functioning normally but without
the ESP
® available.
Synchronize the ESP®. With the vehicle
stationary, turn the steering wheel com-
pletely to the left and then to the right.
If the ESP
® message does not go out:
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.
!When synchronizing the ESP®, make sure
you can turn the steering wheel in both direc-
tions as far as it will go without the wheels hitting
any objects, e.g. a road curb.

374 Practical hints
What to do if …
Left displayRight displayPossible cause/consequencePossible solution
Tire pressuredisplayed 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 MonitorInoperativeThe TPMS or Advanced TPMS* is
malfunctioning.Have the TPMS or Advanced TPMS*
checked by an authorized
Mercedes-Benz Center.
Tire Pressure MonitorInoperative
No Wheel SensorsThere are wheels without appropriate
wheel sensors mounted (e.g. winter
tires).Have the TPMS or Advanced TPMS*
checked by an authorized
Mercedes-Benz Center.
Have appropriate wheel sensors in-
stalled by an authorized Mercedes-Benz
Center.
Tire Pressure Monitor
Wheel Sensor MissingVehicles with Advanced TPMS*:
One or more sensors defect
(e.g. empty sensor battery).
The respective tire is indicated by
---
instead of the tire inflation pressure in
the multifunction display.
Have Advanced TPMS* checked by an
authorized Mercedes-Benz Center.
Have appropriate wheel sensors in-
stalled by an authorized Mercedes-Benz
Center.

376 Practical hints
What to do if …
Symbol messages
Left displayRight displayPossible cause/consequencePossible solution
# The battery is no longer charging.
Possible causes:

alternator malfunctioning

broken poly-V-belt
Do not forget that the brake system
requires electrical energy and may
be operating with restricted capa-
bility. Considerably greater brake
pedal force is required and the stop-
ping distance is increased.
Stop the vehicle immediately in a safe loca-
tion and check the poly-V-belt.
If it is broken:
Do not continue to drive. Otherwise, the
engine will overheat due to an inoperative
water pump which may result in damage
to the engine. Contact an authorized
Mercedes-Benz Center.
If it is in order:
Contact an authorized Mercedes-Benz
Center immediately. Adjust driving to be
consistent with reduced braking respon-
siveness.
There is a malfunction in the elec-
tronic system.Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.