Engine Codes AEG, AVH, AZG, BEV
WARNING: This page is about a different variant/trim than selected.
- Engine code BBW
Special tools, testers and auxiliary items required
- Torque wrench (5 to 50 Nm) VAG 1331
- Engine and transmission jack VAG 1383 A
Removing
NOTE:
- Observe safety precautions before starting work Refer to Safety precautions when working on fuel supply system under FUEL SUPPLY.
- The fuel extraction unit VAS 5190 is recommended for emptying the fuel tank.
- Check whether a coded radio is installed. If so, obtain anti-theft coding.
- With ignition switched off disconnect battery Ground cable.
- Open fuel flap.
- Remove right rear wheelhousing liner: Refer to 66 EXTERIOR EQUIPMENT
- Drain fuel tank and clean fuel filter neck and surrounding area.
- Remove securing bolt on filler neck.
- Fold rear seat bench forward.
- Remove cover from under fuel tank.
- Remove rear axle: Refer to 42 REAR SUSPENSION .
CAUTION:
- 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.
- Remove cover from fuel delivery unit.
- Disconnect 4- pin connector from flange - arrow -.
- Remove cover from under fuel tank - arrow -
- Disconnect return hose - 2 - (blue), supply hose - 1 - (black) and breather hose - 3 - (white) at connecting point.
NOTE:
- To disconnect, press buttons on hose couplings.
CAUTION:
- 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.
- Seal lines so that fuel system is not contaminated by dirt etc.
- Remove tensioning strap. When doing this support fuel tank with engine and transmission jack VAG 1383 A.
- Lower fuel tank.
Installing
Installation is performed in reverse order to removal, note the following:
- Install breather and fuel hoses free of kinks.
- Secure fuel hoses with spring-type clips
- Ensure fuel hoses are tight.
NOTE:
- Do not interchange supply and return hoses (return line blue or blue markings, supply line black)
NOTE:
- After installing the fuel gauge sender, check that the supply return and breather lines are still clipped onto the fuel tank.
- Adapt (match) engine control module to throttle valve control module. Refer to Adapting Components and Functions under Components, checking .
- Generate readiness code again if DTC memory has been erased, Refer to Adapting Components and Functions under Components, checking .