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HOMESERVICE MANUALSAUDI2007A3 BASE, AUTOMATIC DCTREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEM2.0L - GENERAL, TECHNICAL DATA - ENGINE CODE(S): BPY00 GENERAL, TECHNICAL DATAGENERAL INFORMATIONSAFETY PRECAUTIONS
2007 Audi A3 Base, Automatic DCT

Safety Precautions

2007 Audi A3 Base, Automatic DCTSECTION Safety Precautions

Note the following when working on the fuel system:

WARNING:

There is a risk of injury because the fuel is under very high pressure.

  • Reduce the fuel pressure down to residual pressure before opening high pressure area of the fuel injection system.
  • To reduce remaining residual pressure, place a clean cloth around the connector and carefully loosen connector.

-- Procedures before opening high pressure fuel injection system. Refer to General Information .

To prevent personal injury and damage to the injection and ignition system, observe the following:

  • The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.
  • Only clean engine with ignition switched off.
  • If electrical connectors were disconnected and the engine was started, then malfunctions have been stored in the engine control modules.
CAUTION:

Danger of causing damage to electrical components when disconnecting the battery.

  • Complete the steps for disconnecting the battery.
  • Turn off the ignition and disconnect the battery.

-- Disconnect the battery. Refer to Removal and Installation .

Before Opening High Pressure Fuel Injection System

WARNING:
  • The injection system is separated into a high-pressure section (maximum approximately 120 bar) and a low-pressure section (approximately 6 bar).
  • Before opening high pressure area, fuel pressure must be reduced to a residual pressure of approximately 6 bar. Refer to General Information .

Note the following when working on the cooling system:

WARNING:

Risk of scalding due to hot steam and hot coolant.

  • The cooling system is under pressure when the engine is warm.
  • Cover the coolant reservoir cap with a cloth and then open it slowly to release the pressure in the system.
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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.