Cruise control (green)

Illuminates when cruise control is active.   ...

Trailer direction indicators (green)

Illuminates as a bulb check when the ignition is switched on and extinguishes when the engine is started. If a trailer is attached, the warning lamp will flash in conjunction with the direction ...

See also:

Auxiliary Devices
The navigation system has an auxiliary input jack located on the faceplate and in the center console. This is not an audio output; do not plug the headphone set into the front auxiliary input jack. ...

Vehicle data, GL 550
The data stated here refers specifically to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...

Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your tires and transmit tire pressure readings to ...