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Vehicles with PDK
Downshifts are carried out to improve deceleration (especially when driving downhill).
Interrupting automatic speed control operation
The speed driven before the interruption remains stored in the memory.
Automatic speed control operation is interrupted automatically:
– If the set vehicle speed is exceeded by more than approx. 16 mph (25 km/h) for longer than 20 seconds.
– If the actual vehicle speed falls to approx. 37 mph (60 km/h) below the set vehicle speed for longer than 60 seconds
– For PSM control operations.
Resuming the stored speed
The stored speed should only be recalled when traffic conditions and the road surface so permit.
Switching automatic speed control readiness off
The stored speed value is cleared when the vehicle is parked and the ignition is switched off.
On upward or downward slopes, the set speed cannot always be maintained by the automatic speed control.