Engine codes AEG, AVH, AZG, BEV

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Engine code BBW. Refer to Engine code BBW

Special tools and equipment

Fig 1: 3217 Ring Nut Spanner

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3217 Ring nut spanner

Fig 2: Torque Wrench V.A.G. 1332 (40 To 200 Nm)

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V.A.G 1332 Torque wrench (40 to 200 Nm)

Requirement

Fuel tank must not be more than 1/2 full

Removing

NOTE:

Empty fuel tank with fuel extractor VAS 5190, if necessary.
Note safety precautions before beginning work. Refer to Safety precautions when working on the fuel supply system .

WARNING:

The fuel system is under pressure! Before opening the system place a cloth around the connection. Then release the pressure by carefully loosening the connection.
Always wear eye protection and wear fuel-resistant gloves when disconnecting system connections.

Check whether a coded radio is installed. If so, obtain anti-theft coding.
With ignition switched off, disconnect battery ground (GND) strap.
Fold rear seat bench forward.
Remove cover from fuel delivery unit.

Fig 3: Fuel Delivery Unit Connector & Supply And Return Lines

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Disconnect 4- pin connector as well as supply and return lines from flange (arrow).

NOTE: To do this, press on hose couplings.

Seal lines so that fuel system is not contaminated by dirt etc.

Fig 4: Removing/Installing Union Nut With Wrench 3217

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Remove union nut with wrench 3217.
Pull fuel delivery unit and seal out of the opening in fuel tank.

NOTE: If the delivery unit is to be replaced then drain old delivery unit before disposing.

Installing

Installation of fuel delivery unit is performed in reverse order.

NOTE:

Insert seal for flange or fuel delivery unit dry into opening of fuel tank.
Moisten seal with fuel only when installing flange or fuel deliver unit.
Take care not to bend the fuel gauge sensor when installing fuel delivery unit.

Fig 5: Installed Position Of Flange Of Fuel Delivery Unit

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Note installation position of fuel delivery unit flange.

Mark on flange must align with mark on fuel tank (arrows).

Make sure fuel hoses are tight.
After installing fuel delivery unit, check that supply, return and breather lines are still clipped onto fuel tank.
Adapt (match) engine control module to throttle valve control module. Refer to Adapting components and functions , Adapting components and functions.
Generate readiness code again if DTC memory has been erased or engine control module was disconnected from permanent positive, refer to Adapting components and functions , Adapting components and functions.