Empty fuel tank

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2004 Audi A6, 2003 Audi S6, 2003 Audi A6, 2002 Audi S6, and 2002 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.

Observe safety precautions. See SAFETY PRECAUTIONS WHEN WORKING ON FUEL SUPPLY SYSTEM .

Observe rules for cleanliness. See RULES OF CLEANLINESS .

CAUTION:

For vehicles with Telematics, activate service mode of Telematics Control Module before disconnecting the battery.
See TELEMATICS, ON BOARD DIAGNOSTIC (OBD) .
The battery must only be disconnected and connected with the ignition switched off, since the Engine Control Module (ECM) can otherwise be damaged.

Note radio code (for vehicles equipped with coded anti-theft radio / radio navigation system), obtain if necessary.
Remove cover above the battery (arrows).
NOTE: For vehicles without separate battery cover: Remove plenum chamber cover.

Fig 1: Removing Cover Above Battery

Courtesy of AUDI OF AMERICA, INC.

Disconnect battery Ground (GND) wire (arrow) with the ignition switched off.

Fig 2: Disconnecting Battery Ground Wire With Ignition Switched Off

Courtesy of AUDI OF AMERICA, INC.

Pull cone piece -2- from shaft piece -1- of VAS 5190.

Fig 3: Pulling Cone Piece From Shaft Piece Of VAS 5190

Courtesy of AUDI OF AMERICA, INC.

Using insulating tape, apply a mark -arrow- on hose.
- Dimension a = 1,205 mm
Remove fuel filler cap from fuel filler tube.
Screw shaft piece -1- of VAS 5190 fuel siphoning device on to fuel filler tube of fuel tank.

Fig 4: Screwing Shaft Piece Of VAS 5190 Fuel Siphoning Device On To Fuel Filler Tube Of Fuel Tank

Courtesy of AUDI OF AMERICA, INC.

Slide suction hose as far into fuel tank until the mark applied earlier -arrow- stands on shaft piece.
NOTE: Insert hose only up to marking, so that sender for fuel gauge and suction jet pump are not damaged.
NOTE:
- If using a siphoning device without shaft piece, proceed principally in the same manner.
- Using insulating tape, apply a mark -arrow- on hose.
  - Distance a = 1,140 mm
- The suction hose -1- is inserted correctly when the marking applied earlier -arrow- stands opposite the lip of fuel filler tube.
- If the hose can only be inserted with difficulty, smear it thinly with engine oil. Never use lubricants containing silicon.
Empty fuel tank as much as possible via fuel filler tube.
Carefully remove siphoning hose.