See also:

Restoring the factory settings
► Press the buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...

Features & Pricing
Excluding the destination charge, the GL320 Bluetec starts at $58,200, while the GL450 starts at $59,200. Both represent $3,000-plus increases over last year's prices, though larger standard wheel ...

Back button
Press briefly:  - Back  - Switches off the Voice Control System  - Hides display messages or calls up the last Trip menu function used  - Exits the telephone bo ...