wheel torque BMW Z4 SDRIVE30I ROADSTER 2009 Owners Manual

Controls
55Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
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 instru-
ment cluster, followed by the gear actually
in use.
Shifting gears via sh ift paddles* on the
steering wheel
The shift paddles allow yo u to shift gears with-
out taking your hands off of the steering wheel.
> When you use the shift paddles on the
steering wheel to shif t 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 instru-
ment cluster, followed by the gear actually
in use.
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 sele ctor 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. 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.
7-gear sport automatic
transmission with dual
clutch*
The concept
This transmission is an automated manual
transmission with two clutches and two gear-
box 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
System limitations
This transmission is equipped with an over-
heating protection system that protects the
clutches against extremely high loads.

Everything from A to Z
242
Temperature
– air conditioner
94
– automatic climate control 95
– changing unit of measure 68
– coolant, refer to Coolant
temperature 65
Temperature display
– outside temperature 64
– outside temperature warning 64
– setting the units 68
Tempomat, refer to Cruise control 61
Tensioning straps, refer to Securing cargo 114
The individual vehicle 5
Third brake lamp, refer to Center brake lamp 211
Through-loading opening with
integrated transport
bag 105
Tilt alarm sensor 34
Tilt function, passenger-side mirror 46
Tire inflation pressure 190
– loss 81,83
Tire pressure monitoring, refer to Flat Tire Monitor 81
Tire Pressure Monitor TPM
– resetting the system 83
– system limitations 82
– warning lamp 83
Tire Pressure Monitor TPM 82
Tire puncture, refer to Flat Tire Monitor 81
Tire Quality Grading 193Tires
– age
193,195
– air loss 83
– breaking in 110
– changing, refer to Changing
wheels 211
– condition 194
– damage 194
– inflation pressure 190
– labels 193
– minimum tread depth 194
– new wheels and tires 195
– pressure monitoring, refer to
Flat Tire Monitor 81
– pressure monitoring, refer to Tire Pressure Monitor
TPM 82
– puncture 81
– replacing 195
– Run-Flat 195
– size 193
– storage 19
6
– tread depth 194
– wear indicators, refer to Minimum tread depth 194
– wheel/tire combination, refer to Correct wheels and
tires 195
– winter tires 196
TMC station, refer to Traffic bulletins 131
Tone
– control 138
– middle setting 140
Tools, refer to Onboard tool kit 208
Top, refer to Retractable
hardtop 38
Top 50 of music collection 155
Torque, refer to Engine data 220
Tow bar 216
Tow fitting 215
– screw thread 215
Tow fittings for tow-starting
and towing away 215Towing
215
– car with automatic
transmission 215
– methods 216
Towing and tow-starting 215
Town/city, for navigation 119
Tow rope 216
Tow-starting 215,217
TPM, refer to Tire Pressure Monitor 82
Track
– selecting on CD 146
Traction control, refer to
Dynamic Stability Control
DSC 78
TRACTION program,
Dynamic Driving Control 79
Traffic bulletins
– categories 133
Traffic bulletins for navigation
– during destination guidance 133
– in map display 133
Traffic bulletins for navigation 131
Traffic bulletins for navigation system
– filtering 133
Traffic jam
– displaying traffic bulletins 131
Transmission
– automatic transmission with Steptronic 53
– dual clutch transmission 55
– Launch Control 58
– manual transmission 53
– neutral 57
– ov

erriding selector lever lock
for automatic transmission
with Steptronic 55
– reverse gear 57
– transmission lock, releasing
manually 58
Transmission interlock
– refer to Changing selector
lever position 54
– refer to P Park 54