Removing and installing park assist steering control unit J791 — VW
Removing and installing park assist steering control unit J791 on VW: 10 steps, 2 torque figures. What to remove, what to tighten and to how many Nm, what.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform code 1F8
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 1.5 Nm (1.1 lb-ft) | Tighten securing bolt of park assist steering control unit J791 |
| 9 Nm (6.6 lb-ft) | Tighten securing bolts (arrows) for deformation element (1) |
ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.
📋 Procedure
- Switch off ignition and all electrical loads, and pull out ignition key.
- Remove footwell cover on driver side General body repairs, interior68Compartments, covers and trims; Removing and installing footwell cover on driver side.
- Remove trim on driver side General body repairs, interior68Compartments, covers and trims; Removing and installing trim on driver side.
- Unscrew 6 securing bolts (arrows) and remove deformation element (1).
- Remove onboard supply control unit .
- Remove relay carrier on left of dash panel .
- Unscrew securing bolt (arrow) and remove park assist steering control unit J791(1) on right from slot in bracket under consideration of connected line lengths.
- Release and separate 3 connectors (arrows). Remove park assist steering control unit J791(1) from vehicle.
- On installation, first insert park assist steering control unit J791 into right slot in bracket and then tighten securing bolt to torque specified in assembly overview .
- Tighten securing bolts (arrows) for deformation element (1) to 9 Nm on installation. — 9 Nm (6.6 lb-ft)
Other VW procedures
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.