Mercedes-Benz 2002 S 500 - Manual (Page 373)

370 Exterior lamps
Technical
data
Instruments
and controls
Operation Driving
Instrument
cluster display
Practical hints Car care Index
Standby bulb function
The rear fog lamp, dimmed, will act as a replacement
lamp, if the bulb in the inner left-hand taillamp stops
working.
The inner taillamp acts as a replacement for the right or
left-hand bulb of the outer taillamp, if it stops working
as a parking lamp.
Notes:
The multifunction display will indicate that a bulb has
failed. See Malfunction and warning messages on
page 309.