Mercedes-Benz S-Class 2009 - Manual (Page 550)

What to do if …
548
What to do if …
Lamps in instrument cluster
Notes
If any of the following lamps in the instrument
cluster fails to come on during the bulb self-
check when switching on the ignition, have
the respective bulb checked and replaced if
necessary.
When you switch on the ignition, all lamps
(except high-beam headlamp indicator lamp,
and turn signal indicator lamps unless
activated) in the instrument cluster come on.
If a lamp in the instrument cluster fails to
come on when the ignition is switched on,
have it checked and replaced if necessary.
Practical hints