Removing and installing relay and fuse holder in engine compartment electronics box (left-side) — AUDI
Removing and installing relay and fuse holder in engine compartment electronics box (left-side) on Audi: 15 steps.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi R8 (4S, 2015–)
Don't miss
- Exact assignment of contacts in fuse holder can be found in applicable current flow diagram .
📋 Procedure
- Remove cross brace General body repairs, exterior 53. Longitudinal member / support bracket (rear); Exploded view - longitudinal member / support bracket (rear).
- Remove bolts (arrows).
- Detach cover (1).
- Disengage catches (arrows).
- Take bracket (2) for relay and fuse holder upwards out of electronics box (1). At the same time, guide out grommet (3) for wiring harness.
- Release retaining clip (arrow), press out fuse carrier (2) towards rear and disengage at bracket (1).
- Release retaining clips and pull relay and control units out of relay carriers.
- Release retaining clips (arrows) and press relay carrier (3) towards rear out of retainer (4).
- Release retaining clip (1) and press connector (2) out of retainer.
- Disconnect battery (see the separate procedure).
- Release captive fastener and pull it off fuse carrier.
- Remove fuses from fuse carrier.
- Release retaining clips (arrows) and detach cover for fuse carrier.
- Detach retaining strip (1) for connectors (arrow) and take connectors out of socket. [Note: Exact assignment of contacts in fuse holder can be found in applicable current flow diagram .]
- Connect battery. Steps required (see the separate procedure).
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
- Installing bevel boxes as of model year 2010
- Checking lambda control and lambda probe -G39 and -G108 upstream of catalytic converter
- Checking lambda control and lambda probe -G130 and -G131 downstream of catalytic converter
- Dismantling and assembling output shaft, 1st-4th gear
- Installing air hoses and hose clips – Audi 5.0 BUH
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 → · How these pages are made →Workshop data on this page last updated 20 Sep 2026.