Multitronic Transmission 0AW
Engine, Removing
Special tools, testers and auxiliary items required
• Used Oil Collecting and Extracting Device (V.A.G 1782)
• Hose Clamp Pliers (V.A.G 1921)
• Step Ladder (VAS 5085)
• Scissor Lift Table (VAS 6131 A) with Support Set (VAS 6131/10) and Supplementary Set (VAS 6131/11) and (VAS 6131/13)
• Drip Tray for Workshop Crane (VAS 6208)
• Pry Lever - Rmv Outside Mirror (80 - 200)
• Engine Bung Set (VAS 6122)
Procedure
Risk of vehicle tipping over with engine removed.
• Secure vehicle. Luggage compartment must be empty for this.
There is a risk of injury because the fuel is under very high pressure.
• Before opening high pressure area of the fuel injection system, fuel pressure must be relieved to residual pressure.
- Reduce fuel pressure in high pressure area. Refer to => [ Before Opening High Pressure Fuel Injection System ] Before Opening High Pressure Fuel Injection System.
- Position the front wheels so they are straight.
Risk of destroying electrical components.
• Observe measures when disconnecting battery.
- Switch off ignition and remove ignition key.
- Disconnect the Ground (GND) cable - 2 - from the battery terminal.
- Empty coolant circuit.
- Extract the power steering oil from the reservoir with the Used Oil Collection and Extraction Device (V.A.G 1782).
- Remove engine covers - arrows -.
Risk of scalding due to hot steam and hot coolant.
• When the engine is warm the cooling system is under pressure.
• To reduce pressure, cover coolant reservoir cap with cloth and carefully open.
- Open coolant reservoir cap.
- Remove the left and right front wheels.
- Remove left and right front wheel housing liners.
- Remove noise insulation - 1 - and - 2 -.
- Place Drip Tray for Workshop Crane (VAS 6208) under engine.
- Remove drain plug - 1 - and drain the coolant.
- Lift the clip - 2 - and disconnect the coolant hose from the radiator.
- Remove the coolant hose - arrows - from the oil cooler and drain the remaining coolant.
- Place Used Oil Collection and Extraction Device (V.A.G 1782) under the disconnection point.
- Disconnect power steering hydraulic oil supply line - 2 - and return line - 1 - in the left front wheel housing and free them up.
- Seal the open lines and connections with clean plugs from the Engine Bung Set (VAS 6122).
- Place Used Oil Collection and Extraction Device (V.A.G 1782) under the disconnection point.
- Mark the locations of the ATF lines - 1 - and - 2 - so they can be installed later and then disconnect them.
- Seal the open lines and connections with clean plugs from the Engine Bung Set (VAS 6122).
• Disregard - arrow -.
Vehicles with a Coolant Pump (V50):
- Disconnect electrical connector - 1 -.
- Place Drip Tray for Workshop Crane (VAS 6208) under engine.
- Remove coolant hose from the Coolant Pump (V50) - right arrow -.
• Ignore - 2 - and - left arrow -.
All Vehicles
- Push the retainer back - arrow -, press the release down and disconnect the radiator fan connectors - 1 - and - 2 -, if applicable.
- Free up electrical wiring harness.
- Disconnect the connector - 3 - on the Secondary Air Injection Pump Motor (V101), if applicable, and free up the wire.
• Ignore - 1 and 2 -.
- Remove left and right bolt - 1 - and nut - 3 - and the lock carrier brace - 2 -.
- Remove nut - arrow - on the right longitudinal member and free up the Ground (GND) cable.
- Remove seal - arrow -.
- Remove plenum chamber cover.
- Remove vacuum connection - 2 - from the bulkhead by pulling the vacuum hose - 1 - on the rear side.
- Free up the fuel line and wire to the EVAP canister at the air guide pipe.
- Disconnect the electrical connector - 3 - on Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) and disconnect the vacuum hose - 4 -.
- Disengage the Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) from the bracket and lay it aside with the hoses connected.
- Remove air duct - arrows -.
- Free up fuel hose - 1 - on the air duct pipe.
- Remove vacuum hose - 3 - from the connection on the air guide pipe.
- Remove air guide pipe by loosening the hose clamp - 4 - and opening the clips - arrows -.
• Ignore - 2 -.
- Disconnect vacuum line - 1 -.
- Remove the air filter housing and, if applicable, disconnect the electrical connector - 2 - on the rear side at the Intake Air Switch-Over Valve (N335).
Risk of injury from fuel.
• To reduce fuel pressure, lay cloths around connecting point before opening fuel system and carefully loosen.
There is a risk of contamination.
• Follow cleanliness precautions when working on the fuel supply system. Refer to => [ Clean Working Conditions ] Clean Working Conditions.
- Remove the fuel supply line from the high pressure pump - arrow - and lay it aside.
- Seal the open lines and connections with clean plugs from the Engine Bung Set (VAS 6122).
- Disconnect the vacuum hose - 1 - and free it up, if applicable.
- Remove coolant hose - 2 - from the upper coolant pipe by lifting the retaining clamp.
- In vehicles without a Coolant Pump (V50) and with an auxiliary heater, lift the clamp and remove the right front coolant hose - arrow - from the front coolant pipe.
- Remove coolant hose - arrow - from the front coolant pipe by lifting the retaining clamp.
- Remove coolant hose - 3 - from the coolant reservoir and free it up.
- Remove bolts - arrows -, disconnect the electrical connector on the Engine Coolant Level (ECL) Warning Switch (F66) and lay the coolant reservoir aside with the coolant hoses - 1 - and - 2 - attached.
- Disconnect electrical connector - arrow - on the power steering pump, if applicable.
- Press hydraulic hose down slightly.
Risk of damaging coolant lines and hoses.
• Do not stretch, kink or bend coolant lines and hoses.
- Remove bolts - arrows - and the refrigerant lines from the A/C compressor.
- Seal the open lines and connections with clean plugs from the Engine Bung Set (VAS 6122).
- Release retainer - arrow A - and open the cover - arrow B -.
- Remove nuts - 1 - and - 2 - for the electrical wires.
- Remove electrical connector - 3 - from the bracket and disconnect it.
- Remove bolt - 4 - and Terminal 30 Wire Junction 2 (TV22) from the tower brace - arrow -.
- Release retainers from the wheel housing side using a 5.5 mm open end wrench - 1 - and remove the wiring bushing - 2 - upward.
- Free up the wiring harness - 3 - to the generator and starter using the Pry Lever - Rmv Outside Mirror (80 - 200).
- Wiring duct version 1: Free up the wiring duct by releasing the retainer - arrow B - and pulling the duct forward - arrow A -.
- Wiring duct version 2: Open the catch - arrow -, free up the wiring harness and open the wiring duct - 1 -.
- Remove the nut - 1 - and tilt - arrow A - the washer fluid reservoir filler neck - 2 - upward slightly.
- Remove the filler neck with the filler tube from the washer fluid reservoir and the opening in the body - arrow B -.
- Remove the bolts - 1 - and nuts - 2 - and the tower brace - 3 -.
- Remove bolts - arrows - and the engine compartment E-box cover.
- Remove nut - 1 - and free up the electrical wire.
- Release retainers - A arrows - and remove the engine control module - arrow B -.
- Disconnect electrical connector - 2 - if applicable.
- Disconnect electrical connectors - 4 - and remove nut - 3 - for electrical wire.
- Release retainers - arrow - and remove the relay carrier with the fuse holder - 1 -.
- Disengage the engine wiring harness at the engine compartment E-box and free it up.
- Release retainers - A arrows - and remove the wiring bushing - 2 - upward - arrow B -.
- Remove Ground (GND) pin - 1 - and free up the electrical wire.
- Lay the wiring harness on the engine and secure the engine control module against falling down.
- Disconnect the electrical connectors - arrow - at the left and right on the front speed sensors.
- Disconnect the electrical connector - 1 - on the Left Front Level Control System Sensor (G78) and Right Front Level Control System Sensor (G289) and free up the electrical wiring - arrow -.
- Free up the electrical connector - 2 - on the bracket by pulling the retainer back - arrow A - and turning the connector approximately 90° clockwise - arrow B -.
- Free up the electrical wiring - 3 - and brake line - 4 - on the bracket.
- Remove bolts - 1 - and secure the brake caliper in the wheel housing using wire.
Risk of damaging brake pistons.
• Do not operate brake pedal with brake caliper removed.
- Remove nut - 2 - and bolt - 1 -.
- Remove upper control arm upward from the wheel bearing housing - arrows -.
- Repeat procedure on the other side of the vehicle.
A5 through VIN 8T-8-011200:
- Remove left and right stabilizer bar bolt - 3 -.
- Remove left and right nuts - 1 -.
• The bolts - 2 - will be removed later.
All A4, A5 from VIN: 8T-8-011201:
- Remove left and right stabilizer bar bolt - 1 -.
- Remove left and right nuts - 3 -.
• The bolts - 2 - will be removed later.
All Vehicles
Suspension components could be damaged.
• Do not rest the vehicle on its wheels if the subframe mount, steering gear or subframe crossbrace are not installed correctly.
All A4, A5 Coupe:
- Remove nut - 1 - for the power steering hydraulic fluid line bracket.
- Remove bolts - arrows - and subframe crossbrace.
• The illustration shows the installation location on a vehicle with dynamic steering.
A5 Cabriolet:
- Remove left and right bolts - 1 - and - 2 - and the brace.
- Remove bolt - 2 - for the power steering hydraulic fluid line bracket.
- Remove bolts - 1 - and - arrows - and the subframe crossbrace.
All Vehicles
- Remove the left and right bolts - arrows -, if applicable, and the heat shield - 1 -.
- Remove bolts - arrows - and front crossmember, if applicable.
- Remove left front muffler nuts - arrows -.
- Remove right front muffler nuts - arrows -.
The decoupling elements in the front muffler could be damaged.
• Do not bend decoupling elements in front muffler more than 10°.
- Loosen clamping sleeves - 1 - and - 2 -, slide them back and remove the left and right front mufflers.
The airbag spiral spring could be damaged.
• Separate universal joint from steering gear only when front wheels are in straight ahead position.
• Do not change steering wheel position and steering gear position any more, secure steering wheel with adhesive tape.
- Remove universal joint bolt - arrow -.
- Press the CV joint off the steering gear and slide it all the way up.
- Remove the selector lever cable ball socket - A - from the selector shaft lever using the Pry Lever - Rmv Outside Mirror (80 - 200) - arrow -.
- Remove bracket bolts - 2 -.
• Do not bend or kink the selector lever cable.
• Ignore - 1 - and - arrow -.
Prepare scissor lift platform:
- Equip the Scissor Lift Table (VAS 6131 A) with the Support Set (VAS 6131/10) and Supplementary Set (VAS 6131/13) as follows:
- Next secure mounting elements to scissor lift table by hand.
- Position the Scissor Lift Table (VAS 6131 A) horizontally.
• Note bubble level (sight glass) on support platform.
- Guide the Scissor Lift Table (VAS 6131 A) under the engine/transmission assembly.
The subframe could cause an accident if it is not secured.
• Do not loosen the subframe bolts - 2 - and - 3 -.
- Remove left and right subframe bolts - 1 -.
- Attach the mounting elements from the (VAS 6131/10) and (VAS 6131/13) at the left and right front of the subframe as shown in the illustration.
- Ensure threaded spindles are completely installed.
- Attach mounting elements from the (VAS 6131/10) at the left and right rear on the subframe crossbrace front connecting points as shown in the illustration.
- Attach mounting elements from the (VAS 6131/13) at the lower left and right of the wheel bearing housing as shown in the illustration.
- Remove noise insulation retaining clips from the crossmember.
- Attach mounting elements from the (VAS 6131/10) at the left and right rear of the crossmember as shown in the illustration.
- Rotate the mounting element spindles upward until all the mounting pins come into contact with the mounting points.
- Attach mounting element base plates to Scissor Lift Table (VAS 6131 A) and tighten to 20 Nm.
- Mark the location of the subframe and engine carrier to the longitudinal members using a felt-tip pen.
- Remove left and right subframe bolts - 2 - and - 3 - diagonally in stages.
• Ignore - 1 -.
- Remove bolts - arrows - on the tunnel crossmember.
A5 through VIN 8T-8-011200:
- Remove left and right bolts - 2 -.
All A4, A5 from VIN: 8T-8-011201:
- Remove left and right bolts - 2 -.
All Vehicles
Risk of damaging hose and wiring connections as well as engine compartment.
• Make sure all the hoses and lines between the engine, transmission, subframe and body have been disconnected.
• Carefully guide the engine-transmission assembly with the subframe out of the engine compartment while lowering it.
- Lower engine/transmission assembly using Scissor Lift Table (VAS 6131 A).
- Remove Scissor Lift Table (VAS 6131 A) with engine/transmission assembly under vehicle.