Mercedes-Benz 2005 CLK 320 Operator's Manual page 259

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On uphill or downhill grades, cruise
control may not be able to maintain the
set speed. Once the grade eases, the
set speed will be resumed.
CLK 320/CLK 55 AMG:
If the engine's braking power does not
brake the vehicle sufficiently on down-
hill grades, the automatic transmission
will automatically downshift.
CLK 500:
On downhill grades, the cruise control
will hold the set speed with active brak-
ing action.
In addition, on longer downhill grades
the automatic transmission will auto-
matically downshift.
Canceling cruise control
There are several ways to cancel cruise
control:
Step on the brake pedal.
Cruise control is canceled. The last
speed set is stored for later use.
or
Briefly push the cruise control lever to
position 3.
Cruise control is canceled. The last
speed set is stored for later use.
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The last stored speed is canceled when
you turn off the engine.
Controls in detail
Driving systems
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Cruise control automatically switched
off, if
CLK 320/CLK 55 AMG:
you step on the brake pedal.
you move the gear selector lever in
position N while driving.
the vehicle speed is under 20 mph
(30 km/h).
ESP is in operation.
The segments in the multifunction dis-
play are flashing.
CLK 500:
you step on the brake pedal.
you press the parking brake pedal.
In this case the segments in the
multifunction display ( page 256)
go out and no warning sounds.
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