Audi A4 Owners & Service Manuals

Audi A4: Lock Carrier

Overview - Lock Carrier

Lock Carrier

1 - Impact Member

2 - Air Duct

  • Clipped into the bumper cover bracket

3 - Bolt

  • 8 Nm

4 - Lower Air Guide

  • For the radiator

5 - Bumper Cover Bracket

  • Removing and installing. Refer to → Chapter "Bumper Cover Bracket, Removing and Installing".

6 - Bolt

  • Tightening specification. Refer to → Engine Mechanical; Rep. Gr.23; Air Filter; Overview - Air Filter Housing or → Engine Mechanical; Rep. Gr.24; Air Filter; Overview - Air Filter Housing.

7 - Air Duct

  • For the air filter housing
  • Clean off any salt and dirt

8 - Upper Air Duct

  • For the radiator

9 - Lock Carrier

  • Removing and installing. Refer to → Chapter "Lock Carrier, Removing and Installing".

10 - Bolt

  • 10 Nm

11 - Bolt

  • 14 Nm
  • Quantity: 2

12 - Mount

  • For impact member

13 - Bolt

  • Tightening specification -Item 6-

14 - Bolt

  • 5 Nm

15 - Pop Rivet

  • Quantity: 2

16 - Spring Element

  • There are different versions. Refer to the Parts Catalog.
  • For the bumper cover bracket
  • Removing and installing. Refer to → Chapter "Spring Element for Bumper Cover Bracket, Removing and Installing".
  • Adjusting. Refer to → Chapter "Height, Adjusting using Spring Element".

Lock Carrier, Removing and Installing

Special tools and workshop equipment required

  • Engine Bung Set -VAS6122-
  • Follow the safety precautions. Refer to → Body Interior; Rep. Gr.00; Safety Precautions; Safety Precautions when Working on Pyrotechnic Components.
  • To complete the procedure, a second technician is required to be at the following position.

Removing

- Remove the noise insulation. Refer to → Chapter "Noise Insulation, Removing and Installing, Front".

- Remove the front bumper cover. Refer to → Chapter "Bumper Cover, Removing and Installing".

- Remove the bumper cover mount. Refer to → Chapter "Bumper Cover Mount, Removing and Installing".

- Disconnect the connector -2-.

- Remove the breather hose -1-.

Lock Carrier, Removing and Installing

- Remove the bolts -arrows- and then remove the air guides -1 and 2-.

Lock Carrier, Removing and Installing

- On the left: release the retainers -arrow- and remove the air guide -3-.

Lock Carrier, Removing and Installing

- Disconnect the connector -2- for the High Pressure Sensor -G65-.

  NOTICE

Risk of destroying the refrigerant lines by tearing the inner film.

- Never bend refrigerant lines with a radius less than 100 mm (3.93 in.).

- Release the left and right catches in the direction of -arrows- disengage the condenser -1- from the radiator and tie up to the side.

  CAUTION

Pyrotechnic components may deploy unintentionally.

Risk of injury.

- Discharge static electricity by briefly touching the door striker.

Lock Carrier, Removing and Installing

- Vehicles with pedestrian protection: Disconnect the connector -1- from the pedestrian protection crash sensor and free up the wiring harness -2-.

- If required, remove the air filter housing. For TDI vehicles, refer to → Engine Mechanical; Rep. Gr.23; Air Filter; Air Filter Housing, Removing and Installing. For TFSI vehicles, refer to → Engine Mechanical; Rep. Gr.24; Air Filter; Air Filter Housing, Removing and Installing.

Lock Carrier, Removing and Installing

- If equipped, release the retainer in the direction of -arrow-, remove the NOx Sensor Control Module -J583--3- and free it up.

- Disconnect the latch release cable at the coupling and free it up at the lock carrier. Refer to → Chapter "Overview - Release Cable".

- Disconnect the connector -2-.

- Disconnect the connector -1- from the pedestrian protection crash sensor and free up the wiring harness.

Lock Carrier, Removing and Installing

- Disconnect the connector -1- and free up the wiring harness.

- If equipped, place the drip tray under the separating point and disconnect the washer fluid hose -3- by pressing the release buttons in the direction of -arrows-.

- Free up the washer fluid hose -4-.

- Disconnect the connector -2- from the pedestrian protection crash sensor.

Lock Carrier, Removing and Installing

- Disconnect the connector -1- from the Outside Air Temperature Sensor -G17--3- and free up the wiring harness.

- Drain the coolant. Refer to → Engine Mechanical; Rep. Gr.19; Cooling System/Coolant; Coolant, Draining and Filling.

- Remove the coolant hoses from the radiator. Refer to → Engine Mechanical; Rep. Gr.19; Radiator/Radiator Fan; Radiator, Removing and Installing.

- Versions with charge air cooler (air flows through): Remove the air duct pipe from the charge air cooler. Refer to → Engine Mechanical; Rep. Gr.21; Charge Air System; Charge Air Cooler, Removing and Installing.

- Equipped on some models with charge air cooling circuit cooler (water flows through): Remove and free up the coolant hoses from the charge air cooling circuit cooler. Refer to → 4-Cylinder Direct Injection 1.4L 4V TFSI Engine (EA 211); Rep. Gr.19; Radiator/Radiator Fan; Charge Air Cooling Circuit Cooler, Removing and Installing.

Lock Carrier, Removing and Installing

- Disconnect the radiator fan connector -arrow-.

Lock Carrier, Removing and Installing

- If equipped, pry off the cover -1--arrows-.

Lock Carrier, Removing and Installing

- Remove the bolts -arrows-.

Lock Carrier, Removing and Installing

- Have a second technician hold the lock carrier and remove the bolts -arrows-.

- Remove the lock carrier with a second technician.

- The following components must also be removed if the lock carrier is being replaced:

  • Radiator. Refer to → Engine Mechanical; Rep. Gr.19; Radiator/Radiator Fan; Radiator, Removing and Installing.
  • Charge air cooler (air flowing through). Refer to → Engine Mechanical; Rep. Gr.21; Charge Air System; Charge Air Cooler, Removing and Installing.
  • Charge air cooling circuit cooler (water flows through). Refer to → 4-Cylinder Direct Injection 1.4L 4V TFSI Engine (EA 211); Rep. Gr.19; Radiator/Radiator Fan; Charge Air Cooling Circuit Cooler, Removing and Installing.
  • Headlamps. Refer to → Electrical Equipment; Rep. Gr.94; Headlamps; Headlamps, Removing and Installing.
  • Impact Member. Refer to → Chapter "Impact Member, Removing and Installing".
  • Latch. Refer to → Chapter "Latch, Removing and Installing".

Lock Carrier, Removing and Installing

Installing

Install in reverse order of removal and note the following:

- Fill with coolant. Refer to → Engine Mechanical; Rep. Gr.19; Cooling System/Coolant; Coolant, Draining and Filling.

Tightening Specifications

  • Refer to → Chapter "Overview - Lock Carrier"

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