Fuel system, bleeding

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Engine codes BBW, BEV

Special tools and equipment

Fig 1: Identifying Special Tools - Fuel System, Bleeding

GW00000205

Courtesy of VOLKSWAGEN UNITED STATES, INC.

V.A.G 1348/3 A Remote control
V.A.G 1348/3-2 Adapter cable
VAS 5226 Suction pump
V.A.G 1318/20 Adapter

V.A.G 1318/20-1 Adapter

Requirements

Fig 2: Identifying Main Fuse Panel

GW00000097

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fuses must be OK
Battery voltage must be at least 11.5 V
Fuel pump relay must be OK

Work sequence

Remove cover in front of fuse holder.

Fig 3: Connecting VAG 1348/3A With Adapter Cable VAG 1348/3-2 To Contact And Battery Positive

GW00000193

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pull fuse No. 28 out of fuse holder.
Connect remote control V.A.G 1348/3A with adapter cable V.A.G 1348/3-2 to contact 28a to fuel pump and battery positive (+).
Remove pressure hose from secondary air injection pump to combination valve.

Fig 4: Locating Breather Valve Cover Cap

GW00000206

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Unscrew cover cap (arrow) of breather valve.

Fig 5: V.A.G 1318/20-1 & V.A.G 1318/20

GW00000207

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Screw adapter V.A.G 1318/20-1 onto adapter V.A.G 1318/20.
Turn valve (at T-piece) counter-clockwise until it is completely open.

Fig 6: VAS 5226 & V.A.G 1318/20

GW00000208

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Screw adapter V.A.G 1318/20 hand-tight onto breather valve.
Connect hose of suction pump VAS 5226 as shown.
Turn valve (at T-piece) clockwise into breather valve onto limit stop.
Check adapters and hose connectors for leaks.

Operate remote control V.A.G 1348/3A until bubble-free fuel comes out of breather valve.
Turn valve (at T-piece) counter-clockwise again until it is completely open.
Clamp-off hose of suction pump VAS 5226 (e.g. with hose clamp 3094) and disconnect it from adapter V.A.G 1318/20-1.
Unscrew adapter V.A.G 1318/20 from breather valve.