GF27.10-P-0001-06AHV Automatic Transmission (AT), Transmission Modes
GF27.10-P-0001-06AHV Automatic Transmission (AT), Transmission Modes
- TRANSMISSION 722.930 in MODEL 204.0/2/3
View of instrument cluster (A1) with code (494) USA version
A1p12 Gear display
A1p13 Multifunction display
A1p16 Transmission mode display
Gear indicator in instrument cluster in transmission mode Sport "S", Sport PLUS "S+" and transmission mode Comfort "C"
It shows the driver the shift range currently selected "1, 2, 3, 4, 5, 6" or the selector lever position "P, R, N, D".
Gear indicator in instrument cluster in transmission mode Manual "M"
It shows the driver the engaged gear "1, 2, 3, 4, 5, 6, 7" or the selector lever position "P, R, N".
In addition to the gear indicator, the current selector lever position is highlighted with a white background bottom left next to the transmission mode display.
Transmission mode display in instrument cluster
It shows the driver the program selection (S192) Comfort "C", Sport "S", Sport PLUS "S+" or Manual "M" performed at the transmission mode rotary switch. The rotary switch position is read in by the transmission mode control unit (N145) over the AMG DRIVE UNIT-LIN (LIN B11) and sent over the drive train CAN (CAN C) to the fully integrated transmission control unit (Y3/8n4). The fully integrated transmission control unit then sends the corresponding status message for the selected transmission mode over the drive train CAN to the ME-SFI [ME] control unit (N3/10). The ME-SFI [ME] control unit sends the data over the chassis CAN (CAN E) to the instrument cluster.
The driver is then shown the selected transmission mode in the multifunction display.
Center console view
S192 Transmission mode rotary switch
The following selector lever positions are recorded by the electronic selector lever module control unit (N15/5):
- "P", park pawl and starting position
- "R", reverse gear
- "N", neutral and start position (no power transmission, vehicle can move freely)
- "D", all 7 forward gears are available
In order to change from one selector lever position to the next, greater pressure must be applied to the selector lever (higher force application necessary).
Transmission mode rotary switch
The following transmission modes can be selected via the transmission mode rotary switch:
- Comfort ("C") transmission mode, starting off in 2nd gear except in 1st gear shift range, the gearshift operation occurs at low engine rpm
- Transmission mode Sport "S", start-off in 1st gear for all driving situations; gear changes are performed at a higher engine speed
- Transmission mode Sport PLUS "S+"; gear changes are performed with shorter shift times
- Manual ("M") transmission mode, direct gear selection using steering wheel upshift button (S111/1) and steering wheel downshift button (S110/1)
- Transmission mode Race Start "RS", offers optimum vehicle acceleration from a standing start, provided that road surface provides good grip. This mode is activated in the Electronic Stability Program (ESP) Sport mode with the selector lever set to "D". The Race Start transmission mode ends when a vehicle speed of 50 km/h is exceeded. Transmission mode "S+" is then activated and ESP Sport remains engaged.
