Hydraulic Power Steering Gear Overview

WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 2017 Audi S5, 2017 Audi A5 Quattro, 2016 Audi S5, 2016 Audi A5 Quattro, and 2015 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools And Workshop Equipment Required

Torque wrench:V.A.G 1332
Hose clamp pliers:V.A.G 1921
Locking pliers:VAS 6199

NOTE:

Always replace self-locking nuts and bolts.

Welding or straighten work on any steering components is not permissible.

To grease the rack, only use steering gear grease.

Fig 1: Exploded View Of Hydraulic Power Steering Gear, Servicing

Courtesy of AUDI OF AMERICA, LLC

Tie Rod End
- Different versions, with long or short thread on the joint pin, allocation refer to the Parts Information.
  WARNING:
  When replacing, make sure the length of the thread on the tie rod end is sufficient (there must be approximately 5 mm extra thread). If this is not the case, then install a tie rod end with a longer thread pin, allocation Parts Information.
- Check dust caps for damage and correct seating.
- Removing and installing, refer to TIE ROD END .
Nut
- 60 Nm
Spring Clamp
- Always replace if removed.
- For the correct version, refer to the Parts Information.
Boot
- Check for damage.
- Do not twist after adjusting the toe.
- Can be replaced with steering gear installed.
- Replacing, refer to BOOT .
Clamp
- Always replace if removed.
- Clamping sleeves, installing Installing .
Tie Rod
- 90 Nm
- Removing and installing, refer to TIE RODS .
- Grease joint with steering gear grease.
Steering Gear
- Grease joint with steering gear grease.
- Different versions, refer to the Parts Information.
Strainer
- Always replace if removed.
Seal
- Always replace if removed.
Seal
- Always replace if removed.
Servotronic Solenoid Valve -N119-
- Removing and installing, refer to SERVOTRONIC SOLENOID VALVE -N119- .
- follow values can be requested vehicle diagnostic tester:
  - Speed signal
  - The voltage supply from Vehicle Electrical System Control Module 2 -J520-.
  - Solenoid valve status.
  - Measured current for solenoid valve control.
  -- Connect vehicle diagnostic tester and select troubleshooting using "Functions/Component selection".
  
  -- Then "body".
  
  -- Select "Electrical system".
  
  -- "01- On Board Diagnostic (OBD) capable systems".
  
  -- "vehicle electrical system control module".
  
  -- "Electrical components".
  
  -- "Servotronic solenoid valve".
Bolt
- 3 Nm
  CAUTION:
  - Always follow screw tightening sequence.
- Tightening sequence, refer to Servotronic Solenoid Valve -N119- .