0B5A (S-Tronic) Transmission
Electrical and Electronic Components and Component Locations
Data Link Connector (DLC)
• Installation position: The DLC for the vehicle diagnostic tester is inside the footwell on the driver side.
• Before servicing the transmission, determine as best as possible, the cause of the fault using the vehicle diagnostic tester in the Guided Fault Finding Vehicle OBD and Test Instruments.
DSG Transmission Mechatronic (J743) , Valves, Sensor and Transmission Input RPM Sensor
• Installed location: DSG transmission mechatronic is attached to the transmission housing at the bottom and covered by the transmission fluid pan.
• The Mechatronic unit incorporates the hydraulic control, the Transmission Control Module (TCM), the multifunction transmission range switch and the sensors and actuators as a complete synchronized unit.
• On Board Diagnostic (OBD) checks all the components named.
=> [ DSG Transmission Mechatronic (J743) ] DSG Transmission Mechatronic (J743).
Gear Selector, Mechatronic Temperature Sensor in the Overview
1. Circuit board 1
2. Gear selector module
3. Gear position distance sensor 1 (G487) for gear selector 2-R
4. Gear position distance sensor 2 (G488) for gear selector 1-3
5. Gear position distance sensor 3 (G489) for gear selector 7-5
6. Gear position distance sensor 4 (G490) for gear selector 4-6
7. Clutch oil temperature sensor (G509)
8. Transmission input speed sensor 3 (G641) for the clutch input speed sensor
9. Circuit board 2
10. Electro-hydraulic control module
The circuit board 1 and circuit board 2 can be individually removed and installed.
Mechatronic Connectors and Sensor Module
Mechatronic connectors:
1. Transmission control module to circuit board 1
2. Transmission control module to circuit board 2
3. Circuit board 2
4. Sensor module connector at the wiring set
5. Drive position sensor (G676)
6. Circuit board 3 in the sensor module
7. Transmission input speed sensor 1 (G632)
8. Transmission input speed sensor 2 (G612)
9. Wire set with wiring channel
10. Transmission control module to vehicle wiring harness
11. Transmission control module to sensor module
12. Transmission control module
The components - 4 through 8 - are marked as sensor module.
Sensor module , with Integrated Transmitters and Sensors (G612) , (G632) , (G676) and Circuit Board 3
The sensor module - 2 - is installed in the transmission intermediate housing.
The following components are integrated on the sensor module :
• Drive position sensor
• Transmission input speed sensor 1
• Transmission input speed sensor 2
• Circuit board 3
- Removing and installing the sensor module.
Transmission Range Display (Y6)
• Installed location: The transmission range display is integrated in the instrument cluster.
• Replace the instrument cluster if one of the transmission range displays is faulty.
Selector Lever Sensor System Control Module (J587)
• Installed location: The selector lever sensor system control module - 2 - is clipped to the gearshift mechanism function unit - arrows -.
=> [ Selector Lever Sensor System Control Module (J587) ] Selector Lever Sensor System Control Module (J587).
Shift Lock Solenoid (N110)
• Installed location: The shift lock solenoid - 1 - is clipped to the selector mechanism.
=> [ Shift Lock Solenoid (N110) ] Service and Repair.
Transmission Park Selector Switch (F305)
• Installed location: The transmission park selector switch , which consists of two reed contacts - 1 and 2 -, is installed on the circuit board - B - on the shift lock solenoid - A -.
• The transmission park selector switch can only be replaced together with the shift lock solenoid.
=> [ Shift Lock Solenoid (N110) ] Service and Repair.
There are different versions and component locations depending on the date of manufacture
Transmission Fluid Temperature Sensor 2 (G754)
The 7-speed S-Tronic transmission 0B5 has an additional transmission fluid temperature sensor 2 to monitor the transmission fluid temperature of the wheel set on certain engine versions.
• Installed location: Transmission fluid temperature sensor 2 is installed in the transmission near the transmission fluid pan.
• Depending on the date of manufacture, there are different variations and installed locations.
Selector Lever Transmission Range Position Display Unit (Y26)
• Installed location: The selector lever transmission range position display unit (Y26) - 1 - is clipped in center console.
=> [ Selector Lever Transmission Range Position Display Unit (Y26) ] Service and Repair.
Kick Down Switch (F8)
A specific value from the accelerator pedal position sensor (G79) and the accelerator pedal position sensor 2 (G185) is stored in the Engine Control Module (ECM).
• Installed location: The accelerator pedal position sensors are integrated inside the accelerator pedal module - arrow -.
• If the accelerator pedal sensor is defective, then replace the accelerator pedal module.