Mercedes-Benz 600 SEL 1993 Owner's Manual page 84

Exterior Lamp Failure Indicator
Lamp
With the key in steering lock
position 2, a dim indicator lamp
comes on, and goes out when the
engine is running.
With the key in steering lock posi­
tion 2 or with the engine running,
a bright illumination of this lamp
indicates an exterior lamp failure.
If an exterior lamp fails, the in­
dicator lamp will come on only
when that lamp is switched on.
If a brake or turn signal lamp fails,
the lamp failure indicator will come
on when applying the brake or
actuating the turn signal and stay
on until the engine is turned off.
Note:
The indicator lamp will also come
on if an incorrect bulb is installed.
If additional lighting equipment is
installed (e.g. auxiliary headlamps
etc.) be certain to connect into the
fuse before the failure indicator
monitoring unit in order to avoid
damaging the system.
82
Seat Belt Warning Lamp
With the key in steering lock
position 2, the warning lamp
comes on and an audible warning
sounds for a short time if the
driver's seat belt is not fastened.
After starting the engine, the
warning lamp blinks for a brief
period to remind the driver and
passengers to fasten seat belts
before driving off.
Brake Pad Wear Indicator Lamp
The brake pad wear indicator
lamp in the instrument cluster
comes on when the key in the
steering lock is turned to posi­
tion 2 and goes out when the
engine is running.
If the indicator lamp lights up
during braking, this indicates that
the front and/or rear wheel brake
pads are worn down.
Have the brake system checked at
your authorized Mercedes-Benz
dealer as soon as possible.