Mercedes-Benz SL 500 Operator's Manual page 274

Operation
Maintenance
To confirm, press and hold reset button
until you hear a signal.
The service indicator now displays the
reset interval.
i
If the service indicator was inadvertent-
ly reset, have a Mercedes-Benz Center
correct it.
Only reset if the proper service has
been performed. Resetting the system
without performing proper service as
called for by the FSS will cause the FSS
to incorrectly determine the next ser-
vice interval which may result in engine
damage not covered by the
Mercedes-Benz Limited Warranty.
273