Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2018A5 QUATTRO PRESTIGE, 2D CONVERTIBLEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 291 (IGNITION/GLOW PLUG SYSTEM [DMTA,DPAA,DPUA,DPVA,DMTC])28 IGNITION/GLOW PLUG SYSTEMIGNITION SYSTEMOVERVIEW - IGNITION SYSTEM
2018 Audi A5 Quattro Prestige, 2D Convertible
Overview - Ignition System
2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION Overview - Ignition System
WARNING: This page is about a different car, the 2022 Audi A4 allroad, 2021 Audi A4 allroad, and 2020 Audi A4 allroad. However, it is still accessible from the selected car via links, so may be relevant.
- Bolt
- 22 Nm
- The tightening specifications affect function of the knock sensor
- Knock Sensor 1 -G61-
- Removing and Installing. Refer to Knock Sensor 1 -G61-, REMOVING AND INSTALLING .
- Spark Plug
- 27.5 Nm
- Spark Plug Connectors
- Ignition Coil
- Ignition Coil 1 with Power Output Stage -N70-
- Ignition Coil 2 with Power Output Stage -N127-
- Ignition Coil 3 with Power Output Stage -N291-
- Ignition Coil 4 with Power Output Stage -N292-
- Removing and Installing. Refer to IGNITION COILS, REMOVING AND INSTALLING .
- Bolt
- 8 Nm
- Nut
- 9 Nm
- Bolt
- 9 Nm
- Camshaft Position Sensor 3 -G300-
- Removing and Installing. Refer to Camshaft Position Sensor 3 -G300-, REMOVING AND INSTALLING .
- O-Ring
- Replace if damaged or leaking
- O-Ring
- Replace if damaged or leaking
- Camshaft Position Sensor -G40-
- Removing and Installing. Refer to Camshaft Position Sensor -G40-, REMOVING AND INSTALLING .
- Bolt
- 9 Nm
- O-Ring
- Replace if damaged or leaking
- Engine Speed Sensor -G28-
- Removing and Installing. Refer to Engine Speed Sensor -G28-, REMOVING AND INSTALLING .
- Bolt
- 4 Nm +45°
- Replace after removing
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.