Removing and installing socket illumination bulb L42, 12 V socket 2U18 — AUDI
Removing and installing socket illumination bulb L42, 12 V socket 2U18 on Audi: 11 steps. What to remove, in what order, and what to check after.
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)
- Special tools named: T40148, puller
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- Release tabs (2) on puller T40148 must engage in recesses in 12 V socket (3)(arrow); for this purpose, push threaded rod (1) downwards as far as stop.
📋 Procedure
- Release tabs (2) on puller T40148 must engage in recesses in 12 V socket (3)(arrow); for this purpose, push threaded rod (1) downwards as far as stop.
- Open cover (1) of 12 V socket and hold in this position.
- Insert puller T40148 into 12 V socket (3) as far as stop.
- Turn knurled wheel (2) on puller T40148 clockwise as far as stop.
- Use puller T40148 to pull 12 V socket out of illuminated ring with rear cigarette lighter illumination bulb L32.
- Release retaining clips (arrows).
- Take 12 V socket with illuminated ring (1) out of trim panel (2).
- Guide out electrical wire through mounting (arrow) and unplug electrical wire.
- Detach support (1) from puller T40148.
- Push piston downwards and hold in this position.
- Turn knurled wheel (4) on puller T40148 anti-clockwise (arrow); this will open release tabs (2) on 12 V socket (3) and puller T40148 can be removed.
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
- Testing intake air temperature sender (vehicles as of model year 1998)
- Replacing inner oil pipe
- Testing activation of solenoid valves
- Testing output signal for gearshift
- Removing and installing cylinder head covers – Audi 2.7 AGB
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.