Removing and installing mounting for relay carrier underneath dash panel (left-side), onboard supply control unit J519 — AUDI
Removing and installing mounting for relay carrier underneath dash panel (left-side), onboard supply control unit J519 on Audi: 10 steps.
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
📋 Procedure
- Remove onboard supply control unit .
- Remove control unit for headlight range control .
- Remove dash panel vent (left-side) General body repairs, interior70Dash panel; Removing and installing dash panel vent.
- Slide through extension (2) from socket wrench set between air duct (3) and dash panel.
- Remove nuts (4, 5).
- Pull mounting (6) off studs.
- Push mounting towards inside of vehicle to disengage retaining pin (1) on mounting at side guide on A-pillar (arrow).
- Release retaining tabs (3)(arrow A) and disengage mounting for control unit for headlight range control (1) from mounting (2)(arrow B).
- Engage retaining pin (1) on mounting (3) at side guide on A-pillar (arrow).
- Tighten nuts (2).
Other AUDI procedures
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- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
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- Removing and installing tensioning strut top switch F431 / F432
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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.