Mercedes-Benz 500 SEC Operator's Manual page 29

Master Key in Key Holder
1 Release button for master key
Releasing: press release button (1).
The key unfolds from the holder by
itself.
Storing: press release button (1) and
fold key back into holder.
Infrared Remote Control
1 Transmit button
2 Transmitter eye and battery check
The vehicle can be centrally locked
and unlocked with infrared remote
control.
The transmitter is located in the key
holder; the receivers are located
next to the door locks and below the
trunk lock.
3 Receiver in door handle
Unlocking:
Aim transmitter eye (2) at a receiver
(3) and press transmit button (1).
Distance to receiver max. 20 ft (6 m).
The green indicator lamps on the
receivers should blink. They stop
blinking when the vehicle is unlocked.
Note:
If the trunk was previously locked
separately, it will remain locked (see
Index).
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