Fuel Tank, Draining

Fuel tank, draining

WARNING: Fire hazard. DO NOT smoke or work near heaters or have anything in the area that can ignite fuel.

A Procedure on fuel tank more than 1/ 4 full.
B Procedure on fuel tank less than 1/ 4 full.

Special tools and required equipment







- 2012 A







- VAS 5190

Work sequence
- Obtain code on vehicles with coded radio/integrated radio.

CAUTION: After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar(R), switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module.

Audi A6:







- Remove cover above battery -arrow-.

NOTE: On vehicles without separate battery cover: Remove plenum cover.







- With ignition switched off, disconnect battery Ground (GND) cable -arrow-.

Audi RS6:
- Switch ignition off and remove the ignition key.







- Turn locks -arrow- counterclockwise and remove cover -1-.
- Remove cover -1- off upward.







- Connect Ground wire (GND) to battery.

All:

CAUTION: Fasten the grounding strap of the VAS 5190 to an acceptable ground location on the vehicle.

A - Procedure on fuel tank more than 1/ 4 full.







- Remove cone piece -2- from hose -1- of the VAS 5190.
- Mark location on hose -arrow- with a piece of insulating tape.
- a = 1205 mm

- Remove fuel cap from filler neck.







- Install hose -1- of VAS 5190 to filler neck of the fuel tank.
- Push suction hose into fuel tank up to marking tape -arrow-.

NOTE: Only push the suction hose up to the marking tape so that the fuel sender is not damaged.

- Empty fuel tank.
- Carefully remove suction hose - Remove the fuel sender and sealing ring "B - Procedure on fuel tank less than 1/ 4 full
- Suction the remaining fuel out of both right and left fuel tanks.

NOTE:







- The Suction device can be used in the same manner without the hose.
- Mark location on hose -arrow- with a piece of insulating tape.
- a 1140 mm
- The suction hose -1- is installed completely when marking tape is at the edge of the fuel filler neck.
- If installation of suction hose is difficult, lightly coat hose with engine oil.
- Under no circumstances should silicone lubricants be used.

B Procedure on fuel tank less than 1/ 4 full

Limosine:
- Remove cover for sender for fuel gauge located under liner in luggage compartment.

Avant:
- Remove luggage compartment floor covering

All:
- If necessary; fold the left rear seat back forward.







- Remove cover -arrow- for fuel tank sender.







- Carefully release 2-pin connector -arrow- and disconnect







- Remove union nut with wrench 2012 A.
- Pull fuel supply sensor 3 together with seal out of fuel tank opening.







- Draw off remaining fuel in left and right chambers of fuel tank through opening for sensor unit.
- Re-install fuel supply sensor 3 with seal.