BMW F97 Technical Training Manual page 26

F97/F98￿Complete￿Vehicle
4.￿Powertrain
F97/F98,￿transmission￿oil￿cooling
Index
1
2
3
4
5
6
Some￿of￿the￿external￿pipes￿and￿hoses￿carrying￿transmission￿oil￿to￿the￿supplementary￿transmission￿oil
cooler￿have￿had￿their￿cross-sectional￿area￿optimized.￿This￿results￿in￿a￿greater￿oil￿flow￿rate,￿translating
into￿more￿efficient￿cooling￿of￿the￿M￿automatic￿transmission.
The￿thermostat￿of￿the￿transmission￿oil￿cooler￿starts￿opening￿at￿76 °C￿(169￿°F)￿and￿is￿fully￿open￿at
96 °C￿(205￿°F).
4.2.3.￿M￿gear￿selector￿lever/M￿GWS
The￿M￿automatic￿transmission￿is￿operated￿using￿the￿M￿gear￿selector￿lever￿(M￿GWS)￿or￿the￿shift
paddles￿on￿the￿steering￿wheel.
The￿gear￿selector￿switch￿used￿on￿the￿F97/F98￿is￿a￿combined￿M￿gear￿selector￿switch￿with￿integrated
Drivelogic￿switch￿and￿parking￿lock￿button￿as￿familiar￿from￿the￿BMW￿M5.
The￿M-specific￿shift￿pattern,￿as￿used￿for￿the￿M￿double-clutch￿transmissions,￿was￿retained￿for￿the
M￿gear￿selector￿switch.
22
Explanation
M￿automatic￿transmission
Thermostat
Aluminum￿transmission￿sump
Transmission￿oil￿return
Transmission￿oil￿feed
Transmission￿oil￿cooler￿(oil-to-air￿heat￿exchanger￿principle)