Audi A4 Owners & Service Manuals

Audi A4: Subframe, Removing and Installing

Audi A4 (B9) 2016-2023 Service Manual / Chassis / Rear Suspension / Subframe / Subframe, Removing and Installing


This procedure contains mandatory replaceable parts. Refer to component overview and parts catalog prior to starting procedure.

Mandatory Replacement Parts

  • Bolt - Bonded Rubber Bushing for Subframe to Body
  • Bolt/Nut - Rear Final Drive to Subframe (AWD)


- Secure the subframe. Refer to → Chapter "Subframe, Securing".

- Remove the left and right rear brake caliper. Refer to → Brake System; Rep. Gr.46; Rear Brakes; Brake Caliper, Removing and Installing.

- Disconnect the left and right connector -arrow- from the rear level control system sensor and free up the wire.



- Disconnect the left and right connector -2- for the speed sensor.


Ignore item -1-.


- Equipped on some models: disconnect the connector -1-.

- Remove the bolts -arrows- on the upper shock absorber fastener.



- Disconnect the left and right connector -1- for the speed sensor.


Ignore item -2-.

- Remove the drive axle from the rear final drive and tie it up. Refer to → Rear Final Drive; Rep. Gr.39; Propshaft; Propshaft, Removing and Installing.


Continuation for All Versions

- Remove the left and right bolt -arrow- and free up the bracket -1- with the wires.

- Lower the subframe with the Engine and Gearbox Jack -VAS6931-.



Pay attention to the clearance to the surrounding components when lowering the subframe.


Install in reverse order of removal and note the following:

- Tighten the subframe bolts and tighten in a diagonal sequence without an additional turn.


Risk of accident!

If the vehicle will be driving on the streets, all bolts and nuts must be tightened properly according to the guidelines.

- A road test must be performed after completing repairs. If the steering wheel is crooked, the wheels must be aligned. Refer to → Chapter "Axle Alignment".

Tightening Specifications

  • Refer to → Chapter "Overview - Subframe"
  • Refer to → Chapter "Overview - Transverse Link"
  • Refer to → Chapter "Overview - Wheel Bearing"
  • Refer to → Chapter "Wheels and Tires"

Rear Bonded Rubber Bushing for Rear Final Drive, Removing and Installing

Special tools and workshop equipment required

  • Puller - Differential Bearing -T40032-
  • Rear Bushing Tool -T40033-


- AWD equipment version: Remove the rear final drive. Refer to → Rear Final Drive; Rep. Gr.39; Final Drive; Final Drive, Removing and Installing.

- Remove the subframe. Refer to → Chapter "Subframe, Removing and Installing".

- Mount the -T40032- and -T40033- on the bonded rubber bushing and on the subframe as shown.

- Remove the bonded rubber bushing from the subframe.



- Install the -T40032- and -T40033- on the bonded rubber bushing and on the subframe, as shown.

- Install the bonded rubber bushing all the way in the subframe.

Further installation is the reverse order of removal.



     Stabilizer Bar

    Overview - Stabilizer Bar 1 - Bolt 25 Nm + 90º Replace after removing Tighten in the curb weight position. Refer to → Chapter "Wheel Bearing in Curb Weight Position, Lifting Ve

     Control Arm, Tie Rod

     Overview - Transverse Link

    Upper Transverse Link 1 - Wheel Bearing Housing 2 - Bolt 70 Nm + 180º Replace after removing 3 - Front Upper Transverse Link Removing and installing. Refer to


     Exhaust System, Emissions Controls

    Exhaust Pipes/Mufflers Overview - Muffler Overview - Muffler, FWD Vehicle 1 - Retaining Loop Replace if damaged Exhaust system, installing without tension. Refer to → Chapter "Exhaust System, Installing without Tension". 2 - Bolt 23 Nm 3 - Bracket 4 

     Glass Panel, Adjusting

    Glass Panel, Adjusting, Sedan Adjustment Dimensions 1 -  Front Glass Panel Dimension -a- = 0 - 1 mm Dimension -b- = 0 + 1 mm Dimension -c- = 0 mm (flush) 2 -  Roof Height Adjustment To achieve the best possible exterior optical characteristics, make sure that the adjustment

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