Removing and installing Tyre Pressure Monitoring System control unit J502 — AUDI

🧭 Before you start

Fits: Audi A5 (8T, 2007–2016), Audi A5 Cabriolet (8F), Audi A4 B8 (8K, 2007–2015)

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• The system must be re-coded if the Tyre Pressure Monitoring System control unit J502 is renewed .

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

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

1. Remove glove box General body repairs, interior68Shelves/trim panels; Removing and installing glove box.
2. Remove sill panel trim General body repairs, interior70Passenger compartment trim panels; Removing and installing sill panel trim.
3. Remove fasteners (arrows A) and detach cover (arrow B).
4. Remove bolt (1) and detach vent (2).
5. Detach cover (arrow) and remove pollen filter.

6. ⚠ Take care not to tear floor covering when moving it. — Carefully move floor covering aside with the aid of a second mechanic.
7. Turn up insulating mat (arrow).
8. Release and unplug connector (3).
9. Remove nuts (1) and lift out Tyre Pressure Monitoring System control unit J502(1).
10. If centre console was pulled out of dash panel when pulling back floor covering, refit centre console (slide lug (1) into dash panel (2)).
11. Fit nuts (1) and tighten to 2 Nm. — 2 Nm (1.5 lb-ft)
12. The system must be re-coded if the Tyre Pressure Monitoring System control unit J502 is renewed .

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