2009 BMW Z4 Owner's Manual - Page 57

Shifting gears via shift paddles* on the steering wheel The shift paddles allow you to shift gears without taking your hands off of the steering wheel. > When you use the shift paddles on the steering wheel to shift gears in automatic mode, the transmission switches to manual mode. > If you do not accelerate or shift gears using the shift paddles for a certain amount of time, the transmission switches back to automatic mode. If the selector lever is in the M/S gear plane, manual mode remains active.< > To shift up: pull one of the shift paddles. > To shift down: press one of the shift paddles. Upshifts and downshifts are executed only when they will result in a plausible combination of engine and vehicle speed; thus, for example, a downshift that would cause the engine to overrev will not be executed by the system. The gear selected is briefly displayed in the instrument cluster, followed by the gear actually in use. 7-gear sport automatic transmission with dual clutch* The concept This transmission is an automated manual transmission with two clutches and two gearbox components in which the gears are changed without loss of torque. You operate the transmission using the selector lever and two shift paddles on the steering wheel. It offers the following functions: > Selection between manual and automatic operation: sequential mode or drive mode > Automatic downshifting and protection against selecting the wrong gear, even in sequential mode > Launch Control acceleration assistant, refer to page 58 > Automatic double de-clutch Overriding selector lever lock Should the selector lever refuse to move out of position P although the button on the selector lever is pressed, the selector lever lock can be overridden: 1. Unclip the sleeve of the selector lever. 2. Pull the sleeve up over the selector lever until the sleeve is inside out. System limitations Mobility Reference This transmission is equipped with an overheating protection system that protects the clutches against extremely high loads. 55 Online Edition for Part no. 01 41 2 602 116 - © 01/09 BMW AG Communications Entertainment Navigation Driving tips 3. Using the screwdriver from the onboard tool kit, refer to page 208, press the red lever while moving the selector lever to the desired position. Controls Upshifts and downshifts are executed only when they will result in a plausible combination of engine and vehicle speed; thus, for example, a downshift that would cause the engine to overrev will not be executed by the system. The gear selected is briefly displayed in the instrument cluster, followed by the gear actually in use. At a glance