Storing and maintaining the currentspeed

You can store the current speed if you are driving faster than 20 mph (30 km/h).

Accelerate the vehicle to the desired speed.
Briefly press the cruise control lever up 1 or down 2 to the pressure point.
Remove your foot from the accelerator pedal.

Cruise control is activated. The vehicle automatically maintains the stored speed.

the stored speed on uphill gradients. The Cruise control may be unable to maintain the stored speed on uphill gradients. The stored speed is resumed when the gradient evens out. Cruise control maintains the stored speed on downhill gradients by automatically applying the brakes.

    See also:

    Fuel requirements
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    Vehicle data, GL 450
    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. ...