Electrical and Electronic Components and Locations
Electrical and Electronic Components and Locations
1 Transmission Control Module (J217)
• The control module sends and receives data from the Data bus.
• Installed location, removing and installing, refer to => [ Transmission Control Module ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
2 Engine Control Module
• The control module sends and receives data from the Data bus.
3 Multifunction Transmission Range Switch (F125)
• Installed location, refer to => [ Multifunction Transmission Range Switch ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
• Removing and installing, refer to => [ Multifunction Transmission Range Switch F125 ] Service and Repair.
• Adjusting, refer to => [ Multifunction Transmission Range Switch, Adjusting ] Adjustments
4 Valve Body
• Installed location, refer to => [ Valve Body ].
• The components can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
• For the correct allocation, refer to the Parts Catalog.
5 Sensor Wiring Harness
• With the transmission fluid temperature sensor.
• Installed location, refer to => [ Sensor Wiring Harness ].
• Removing and installing, refer to => [ Solenoid Valve and Sensor Wiring Harness ] Service and Repair.
• For the correct allocation, refer to the Parts Catalog.
6 Transmission Fluid Temperature Sensor (G93)
• Installed location, refer to => [ Sensor Wiring Harness ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
7 Solenoid Valve Wiring Harness
• Installed location, refer to => [ Solenoid Valve Wiring Harness ].
• Removing and installing, refer to => [ Solenoid Valve and Sensor Wiring Harness ] Service and Repair.
• For the correct allocation, refer to the Parts Catalog.
8 Automatic Transmission Hydraulic Pressure Sensor 1 (G193)
• Not installed in all transmissions.
• For the correct allocation, refer to the Parts Catalog.
• Installed location, refer to => [ Automatic Transmission Hydraulic Pressure Sensor 1 and Automatic Transmission Hydraulic Pressure Sensor 2 ].
9 Automatic Transmission Hydraulic Pressure Sensor 2 (G194)
• Not installed in all transmissions.
• For the correct allocation, refer to the Parts Catalog.
• Installed location, refer to => [ Automatic Transmission Hydraulic Pressure Sensor 1 and Automatic Transmission Hydraulic Pressure Sensor 2 ].
10 Transmission Input Speed Sensor (G182)
• Removing and installing, refer to => [ Transmission Input Speed Sensor G182 ] Transmission Input Speed Sensor G182.
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
11 Transmission Output Speed Sensor (G195)
• Removing and installing, refer to => [ Transmission Output Speed Sensor G195 ] Transmission Output Speed Sensor G195.
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
12 Shift Lock Solenoid (N110)
• Installed location: The shift lock solenoid is located in the selector mechanism.
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
13 Tiptronic Switch (F189)
• Installed location, refer to => [ Tiptronic Switch ].
• Can be checked in "Guided Fault Finding" using the vehicle diagnostic tester.
14 Terminal 50 Power Supply Relay (J682)
• Inside the engine compartment E-box.
15 Diagnostic Connection
• Installed location, refer to => [ Diagnostic Connection ].
16 Transmission Range Display (Y6)
• Installed location, refer to => [ Transmission Range Display ].
Transmission Control Module
Installed location: The control module - arrow - is located in the left front wheel housing.
- The wheel housing liner must be removed for the removal and installation.
Multifunction Transmission Range Switch
Installed location: The switch is located on the upper side of transmission.
Valve Body
Installed location: The valve body is bolted to the underside of the transmission housing and is covered by the transmission fluid pan.
The solenoid valve 1 (N88) , solenoid valve 2 (N89) , solenoid valve 3 (N90) , solenoid valve 4 (N91) , solenoid valve 5 (N92) , solenoid valve 6 (N93) , solenoid valve 9 (N282) and solenoid valve 10 (N283) are secured to the valve body.
Sensor Wiring Harness
• With integrated transmission fluid temperature sensor - arrow -
Installed location: The wiring harness is secured to the valve body in the transmission.
Solenoid Valve Wiring Harness
Installed location: The wiring harness is secured to the valve body in the transmission.
Automatic Transmission Hydraulic Pressure Sensor 1 and Automatic Transmission Hydraulic Pressure Sensor 2
These sensors are not installed in all transmissions.
Installed location:
The automatic transmission hydraulic pressure sensor 1 - 1 - and the automatic transmission hydraulic pressure sensor 2 are installed in the valve body.
Transmission Input Speed Sensor and Transmission Output Speed Sensor
Installed location: inside the transmission housing above the valve body.
1 Transmission input speed sensor
2 Transmission output speed sensor
Tiptronic Switch
Installed location: The Tiptronic switch is integrated in the shift mechanism.
If the vehicle has a multifunction steering wheel, check the buttons on the steering wheel and the corresponding wire connections.
Diagnostic Connection
Installed location: The data link connector - arrow - is located under the driver side storage compartment on the left side.
Transmission Range Display
Installed location: Inside the instrument cluster