Removing and installing control unit for electromechanical parking brake J540 — AUDI
Removing and installing control unit for electromechanical parking brake J540 on Audi: 13 steps, 1 torque figure.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 9 Nm (6.6 lb-ft) | Fit nuts |
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
- Remove fuse holder FSFElectrical system97Relay carriers, fuse carriers, electronics boxes; Removing and installing relay and fuse holder in luggage compartment (right-side).
- If fitted, remove retaining frame (bottom) for control units Electrical system97Control units.
- Vehicles without retaining frame (bottom) for control units: Remove nuts.
- Vehicles with retaining frame (bottom) for control units: Take control unit for electromechanical parking brake J540 off threaded pins.
- Slide retainer catch of electrical connection (2) forwards.
- Remove control unit for electromechanical parking brake J540(1) with connection.
- Unplug electrical connector and detach control unit.
- Plug electrical connector (2) into control unit J540.
- Slide retainer catch on connector to the rear so it engages.
- Install control unit.
- If fitted previously, install retaining frame (bottom) for control units Electrical system97Relay carriers, fuse carriers, electronics boxes; Overview of fitting locations - relay carriers, fuse carriers, electronics boxes.
- Install fuse holder FSFElectrical system97Relay carriers, fuse carriers, electronics boxes; Removing and installing relay and fuse holder in luggage compartment (right-side).
- When renewing control unit for electromechanical parking brake J540, select "“Replace”" function for control unit for electromechanical parking brake J540 using , Guided Functions.
Other AUDI procedures
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Connecting VAS 5051 and selecting functions
- Checking delivery pressure of power steering pump (vehicles with 10-cylinder TFSI engine)
- Removing and installing MMI display basic (up to week 35/08) · 1 torque figures
- Removing and installing amplifier R12 (basic) – Audi A6 C6 · 1 torque figures
- Removing and installing front mid-range loudspeaker – Audi · 1 torque figures
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.