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Five Fast Fixes- 9/12/14

Vehicle: 2008 Volkswagen Eos lux 2.0L, L4, MFI, DOHC, Eng Desg BPY
Mileage:115,029

Customer Concern:The driver's seat does not recline.

Tests: 1. Check the wiring and connector to the power seat switch assembly and to the Driver's Entry Assistance Control Module J572. Check for any signs of damage, moisture, corrosion, etc.

2. With a factory compatible scan tool, check to see if the Driver's Backrest Adjustment Switch E96 is being recognized.

  • A. Select Address Word 63-Entry Assist Driver.
  • B. Select Function 08-Read Measuring Value Block (MVB).
  • C. Enter Display Group 005. The 1st field should change as the seat height, inclination and seat back adjustment buttons are operated.

3. Pin T6ax/6 Brown (BR) at the seat adjustment switches should be a good ground at all times.

A. This pin goes to ground at Ground Connection 44 on the lower left A-Pillar.

4. Pin T10t/1 Lilac (LI) at the seat adjustment switches should have B+ present with the Driver's Backrest Stop Switch -Aft- F382 closed.

A. This power comes from fuse S44 and goes through the F382 switch before going to the E96 switch.

5. Pin T10t/4 Red/Lilac (RO/LI) at the seat adjustment switches should have B+ present with the Driver's Backrest Stop Switch -Fore- F381 closed.

A. This power comes from fuse S44 and goes through the F381 switch before going to the E96 switch.

6. Manually energize the Driver's Backrest Adjustment Motor V45 from the seat switches and verify operation. Pins T10t/5 Red/Grey (RO/GR) and T10t/7 Grey (GR) are for the V45 motor. The polarity of the pins will make the motor move in one direction or the other.

A. This should also cause the scan data for switch operation to change when energized.

  • Potential Causes: Open Fuse(s)
  • Defective Driver's Backrest Adjustment Motor V45
  • Failed Driver's Backrest Adjustment Motor V45 Wiring
  • Defective Driver's Backrest Adjustment Switch E96
  • Failed Driver's Backrest Adjustment Switch E96 Wiring
  • Defective Driver's Entry Assistance Control Module J572

Confirmed Fix: Repaired Driver's Backrest Adjustment Switch E96 Wiring