Mercedes-Benz 2009 S-Class Operator's Manual page 556

Practical hints
What to do if ...
For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center immediately to have the system checked.
Otherwise the SRS may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy
unexpectedly and unnecessarily which could also result in injury.
Problem
®
v The yellow ESP warning
lamp comes on while the
engine is running.
v The yellow ESP ®
warning
lamp comes on while the
engine is running.
554
Possible cause/consequence
®
The ESP has been switched off.
Risk of accident!
®
When the ESP is switched off it
will not stabilize the vehicle if the
system recognizes that the
vehicle starts to skid or that a
wheel is spinning.
The cruise control is deactivated
and cannot be switched on.
®
The ESP is not operational due
to a malfunction.
Risk of accident!
The cruise control is deactivated
and cannot be switched on.
Suggested solutions
X
®
Switch the ESP back on.
Exceptions: ( Y page 74).
X
®
If leaving the ESP switched off, adapt your speed and driving to
the prevailing road and weather conditions.
X
®
If the ESP cannot be switched back on: Have the system checked
at an authorized Mercedes-Benz Center as soon as possible.
X
Read and observe additional messages that may appear in the
multifunction display.
X
Continue driving with added caution.
X
Adapt your speed and driving to the prevailing road and weather
conditions.
X
Have the system checked at an authorized Mercedes-Benz Center
as soon as possible.