Electrical/electronic components and locations

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2009 Audi A4, 2008 Audi S4, 2008 Audi A4, 2007 Audi S4, and 2007 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Connecting Data Link Connector (DLC)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Data Link Connector (DLC)

Location: below knee padding on left side of steering wheel

The following components can be tested in the "Guided fault finding" using vehicle diagnostic, testing and information system VAS 5051 A.

Fig 2: Removing/Installing Securing Bolts For Mechatronics Unit In Sequence

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Mechatronics unit, Transmission Control Module (TCM) J217, Multi-function transmission range (TR) switch F125, Transmission input speed (RPM) sensor G182 and Transmission output speed (RPM) sensor G195

Location: the mechatronics unit is bolted to the underside of the transmission housing and covered by the transmission oil pan.

The mechatronics unit incorporates the hydraulic control system, the electronic control module and the sensors and actuators as a complete synchronized unit. This includes:

Transmission Control Module (TCM) J217
Multi-Function Transmission Range (TR) Switch F125
Transmission Input Speed (RPM) Sensor G182
Transmission Output Speed (RPM) Sensor G195

The "mechatronics" unit can only be replaced as a complete unit.

NOTE:

All components mentioned are tested via Self-diagnosis.

Removing and installing mechatronics unit → Mechatronics unit, removing and installing

Fig 3: Locating Wiring Harness With Connector Is Attached To The Mechatronics Unit

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Internal wiring harness in transmission

Location: the wiring harness - A - with connector - C - is attached to the mechatronics unit - B -.

Removing and installing wiring harness → Wiring harness in transmission, removing and installing .

Fig 4: Transmission Range (TR) Selector Lever Display -Y6-

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Transmission Range (TR) Display Y6

Location: integrated into instrument cluster

NOTE:

The Transmission Range (TR) Display Y6 can only be replaced together with instrument cluster.

Fig 5: Selector Mechanism Consists Of 3 Hall Senders

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Tiptronic switch F189

Location: The Tiptronic switch F189 is integrated in the printed circuit of the symbol panel, which is located in the selector mechanism cover.
Comprises 3 Hall sensors actuated by a magnet on transverse slide of the sliding cover.

A - Tip-down sensor

B - Sensor for Tiptronic recognition

C - Tip-up sensor

Fig 6: Checking Whether Solenoid Is Properly Attached To Roll Cover

Courtesy of VOLKSWAGEN UNITED STATES, INC.

NOTE:

In the event of faults, first check that magnet is properly secured on the transverse slide - C - of the sliding cover. Replace sliding cover if necessary. Always check wiring before replacing symbol insert with integrated printed circuit. On vehicles with multi-function steering wheel the buttons on the steering wheel and their wiring connections must also be checked.
Ignore - item A - and - item B -.

Removing and installing Tiptronic switch F189 → Tiptronic switch F189, removing and installing