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Steering: Overview Audi A6 C5 facelift

Steering Column Switches 3 illustrations ~1881 words

General Information

Power steering pump is not designed to be serviced. If a customer has reported a problem, determine cause via the pressure test and leak test. If there is a problem, replace the power steering pump.

Oil circulation in Right Hand Drive (RHD) vehicles is identical to Left Hand Drive (LHD) vehicles except that the hydraulic lines are routed from left to right at the steering gear.

Note. If power steering fluid is low in the reservoir, check the steering system for leaks. In case of leaks near line connections, check lines/line connections for proper seal, if necessary tighten and wipe dry. Replacement pumps from the distribution center do not contain any fluid. Before installing, fill pump with G 002 000 hydraulic oil and turn pump by hand. Otherwise, the pump may be noisy when operating or may even get damaged. Oil type: G 002 000 hydraulic fluid

The following list pertains to (Scheme 1).

  1. Power steering gear Assembly Overview, see «POWER STEERING GEAR, ASSEMBLY OVERVIEW»(ref-196277-S37923113222005100800000) Servicing, see «STEERING GEAR, SERVICING»(ref-196277-S33649055712005100800000)
  2. Expansion hose Tighten union nut to 40 Nm (at item 19) while counterholding hex bolt.
  3. Return hose
  4. Cover with dipstick Check fluid level. See «POWER STEERING FLUID LEVEL, CHECKING; STEERING SYSTEM, BLEEDING AND CHECKING FOR LEAKS»(ref-196277-S13231397802005100800000) .
  5. Hex bolt,9 Nm
  6. Power steering fluid reservoir Capacity 0.85L
  7. Rubber bushing
  8. Return hose Located between power steering fluid reservoir and cooling line
  9. Intake hose Installation position, see «INSTALLATION POSITION, INTAKE HOSE AT POWER STEERING FLUID RESERVOIR, VALID FOR ALL ENGINES»(ref-196277-S41222862312006041100000) Markings must align
  10. Clamp Tighten using VAG1275
  11. Clamp Tighten using VAG1275
  12. Combination bolt 9 Nm
  13. Cooling line
  14. Line Marking must align with the intake hose marking
  15. Intake hose Marking -P- faces toward pump
  16. Power steering pump Before installing, fill with power steering fluid. See «POWER STEERING / OIL CIRCULATION FOR 6-CYLINDER ENGINE»(ref-196277-S02701643202005100800000) , Notes: Check delivery pressure. See «POWER STEERING PUMP, ASSEMBLY OVERVIEW»(ref-196277-S18127835722005100800000) . Assembly overview. See «POWER STEERING PUMP, ASSEMBLY OVERVIEW»(ref-196277-S18127835722005100800000) .
  17. Seal, 16 22 Always replace
  18. Banjo fitting, 47 Nm M16 x 1.5
  19. Expansion hose Partial section with line, goes to steering gear
  20. Hex bolt, 6 Nm M6 x 20
  21. Coolant line
  22. Hex-nut, tighten to 20 Nm. M8 Secures expansion hose to coolant line
  23. Sheet-metal screw and washer assembly 2 Nm
  24. Heat shield
  25. Spring nut 1.3 Nm

The marking on intake hose -1- must align with the seam on the power steering fluid reservoir.

Scheme 1

Scheme 1: Installation position, intake hose at power steering fluid reservoir, valid for all engines
Scheme 1: Installation position, intake hose at power steering fluid reservoir, valid for all engines

Power steering pump is not designed to be serviced. If a customer has reported a problem, determine cause via the pressure test and leak test. If there is a problem, replace the power steering pump.

Oil circulation in Right Hand Drive (RHD) vehicles is identical to Left Hand Drive (LHD) vehicles except that the hydraulic lines are routed from left to right at the steering gear.

Note. If power steering fluid is low in reservoir, check steering system for leaks. In case of leaks near line connections, check lines/line connections for proper seal, if necessary tighten and wipe dry. Replacement pumps from the distribution center do not contain any fluid. Before installing, fill pump with G 002 000 hydraulic oil and turn pump by hand. Otherwise, the pump may be noisy when operating or may even get damaged. Oil type: G 002 000 hydraulic fluid

The following list pertains to see scheme 27.

  1. Power steering gear Assembly Overview, see «POWER STEERING GEAR, ASSEMBLY OVERVIEW»(ref-196277-S37923113222005100800000) Servicing, see «STEERING GEAR, SERVICING»(ref-196277-S33649055712005100800000)
  2. Return hose
  3. Expansion hose Partial section with line, goes to steering gear
  4. Heat shield
  5. Cover with dipstick Check fluid level. See «POWER STEERING FLUID LEVEL, CHECKING; STEERING SYSTEM, BLEEDING AND CHECKING FOR LEAKS»(ref-196277-S13231397802005100800000) .
  6. Hex bolt, 9 Nm
  7. Power steering fluid reservoir Capacity 0.85L
  8. Rubber bushing
  9. Return hose Located between power steering fluid reservoir and cooling line
  10. Intake hose Installation position see «INSTALLATION POSITION, INTAKE HOSE AT POWER STEERING FLUID RESERVOIR, VALID FOR ALL ENGINES»(ref-196277-S11139224812006041100000) Markings must align
  11. Clamp Tighten using VAG1275
  12. Clamp Tighten using VAG1275
  13. Rubber buffer
  14. Hex-nut, tighten to 9 Nm. M6
  15. Cooling line
  16. Sleeve
  17. Screw and washer assembly, 9 Nm
  18. Torx bolts (T25) 5 Nm M5 x 12
  19. Line Marking must align with intake hose marking
  20. Intake hose Marking -P- must align with flash on pump
  21. Power steering pump Before installing, fill with power steering fluid. See «POWER STEERING / OIL CIRCULATION FOR 6-CYLINDER ENGINE»(ref-196277-S02701643202005100800000) , Notes: Check delivery pressure. See «DELIVERY PRESSURE OF POWER STEERING PUMP, CHECKING»(ref-196277-S27240263842005100800000) Assembly overview, see «POWER STEERING PUMP, ASSEMBLY OVERVIEW»(ref-196277-S15832550932005100800000)
  22. Seal, 16 22 Always replace
  23. Banjo fitting, 47 Nm M16 x 1.5
  24. Expansion hose Partial section with line, goes to steering gear
  25. Hex bolt, 7.5 Nm M8 x 15
  26. Union nut Tighten to 40 Nm while counterholding hex bolt. Markings must align with each other
  27. Sheet-metal screw and washer assembly 2 Nm
  28. Heat shield
  29. Spring nut 1.3 Nm

The marking on intake hose -1- must align with the seam on power steering fluid reservoir.

Scheme 2

Scheme 2: Installation position, intake hose at power steering fluid reservoir, valid for all engines
Scheme 2: Installation position, intake hose at power steering fluid reservoir, valid for all engines

Power steering pump is not designed to be serviced. If a customer has reported a problem, determine cause via the pressure test and leak test. If there is a problem, replace the power steering pump.

Oil circulation in Right Hand Drive (RHD) vehicles is identical to Left Hand Drive (LHD) vehicles except that the hydraulic lines are routed from left to right at the steering gear.

Note. If power steering fluid is low in the reservoir, check the steering system for leaks. In case of leaks near line connections, check lines/line connections for proper seal, if necessary tighten and wipe dry. Replacement pumps from the distribution center do not contain any fluid. Before installing, fill pump with G 002 000 hydraulic oil and turn pump by hand. Otherwise, the pump may be noisy when operating or may even get damaged. Oil type: G 002 000 hydraulic fluid

The following list pertains to see scheme 44.

  1. Power steering gear Assembly Overview, see «POWER STEERING GEAR, ASSEMBLY OVERVIEW»(ref-196277-S37923113222005100800000) Servicing, see «STEERING GEAR, SERVICING»(ref-196277-S33649055712005100800000)
  2. Return hose Steering gear - power steering fluid cooler
  3. Pressure line Tighten union nut to 40 Nm (at item 4) while counterholding hex bolt. Note installation position At steering gear, see «INSTALLATION POSITION, RETURN LINE AND PRESSURE LINE AT STEERING GEAR, FOR LEFT HAND DRIVE (LHD) VEHICLES»(ref-196277-S19065798182006041200000)
  4. Expansion hose Power steering pump - steering gear Note installation position: At power steering pump, see «INSTALLATION POSITION, INTAKE AND EXPANSION HOSES TO POWER STEERING PUMP»(ref-196277-S17597687692006041200000)
  5. Cover with dipstick Check fluid level. See «POWER STEERING FLUID LEVEL, CHECKING; STEERING SYSTEM, BLEEDING AND CHECKING FOR LEAKS»(ref-196277-S13231397802005100800000) .
  6. Hex bolt, 9 Nm
  7. Power steering fluid reservoir Capacity 0.85L
  8. Rubber bushing
  9. Return hose Located between power steering fluid reservoir and cooling line Installation position Restrictor (arrow) faces power steering fluid reservoir
  10. Banjo bolt, 47 Nm M16x1.5
  11. Seals Always replace
  12. Intake hose Power steering pump - power steering fluid reservoir Note installation position: At power steering pump, see «INSTALLATION POSITION, INTAKE AND EXPANSION HOSE AT POWER STEERING PUMP»(ref-196277-S10286888982006041200000) At power steering fluid reservoir, see «INSTALLATION POSITION, INTAKE HOSE AT POWER STEERING FLUID RESERVOIR, VALID FOR ALL ENGINES»(ref-196277-S13250283012006041200000)
  13. Banjo fitting, 47 Nm M18x1.5
  14. Seals Always replace
  15. Clamp Tighten using VAG1275
  16. Power steering fluid cooler
  17. Phillips-head screw 2.5 Nm
  18. Power steering pump Before installing, fill with power steering fluid. Notes, see «POWER STEERING / OIL CIRCULATION FOR 8-CYLINDER ENGINE»(ref-196277-S09386834262005100800000) Assembly overview, see «POWER STEERING / OIL CIRCULATION FOR 8-CYLINDER ENGINE»(ref-196277-S09386834262005100800000)
  19. Spring nut 1.3 Nm
  20. Sheet-metal screw and washer assembly 2 Nm
  21. Heat shield Different version for vehicles with parking heater
  22. Heat shield

Expansion hose

  1. Angle -a- : approx. 57°

Intake line

  1. Angle -b- : approx. 90°

Pressure line

  1. Angle -a- : approx. 45°

Return hose

  1. Angle -b- : approx. 116°

The marking on intake hose -1- must align with the seam on the power steering fluid reservoir.

Scheme 3

Scheme 3: Installation position, intake hose at power steering fluid reservoir, valid for all engines
Scheme 3: Installation position, intake hose at power steering fluid reservoir, valid for all engines

Power steering pump is not designed to be serviced. If a customer has reported a problem, determine cause via the pressure test and leak test. If there is a problem, replace the power steering pump.

Oil circulation in Right Hand Drive (RHD) vehicles is identical to Left Hand Drive (LHD) vehicles except that the hydraulic lines are routed from left to right at the steering gear.

Note. If power steering fluid is low in the reservoir, check the steering system for leaks. In case of leaks near line connections, check lines/line connections for proper seal, if necessary tighten and wipe dry. Replacement pumps from the distribution center do not contain any fluid. Before installing, fill pump with G 002 000 hydraulic oil and turn pump by hand. Otherwise, the pump may be noisy when operating or may even get damaged. Oil type: G 002 000 hydraulic fluid

The following list pertains to see scheme 94.

  1. Power steering gear Assembly overview, see «POWER STEERING GEAR, ASSEMBLY OVERVIEW»(ref-196277-S37923113222005100800000) Servicing, see «STEERING GEAR, SERVICING»(ref-196277-S33649055712005100800000)
  2. Return hose Steering gearing - power steering fluid cooler
  3. Pressure line Tighten union nut to 40 Nm (at item 4 while counterholding hex bolt. Note installation position: At steering gear, see «INSTALLATION POSITION, RETURN LINE AND PRESSURE LINE AT STEERING GEAR, FOR LEFT HAND DRIVE (LHD)VEHICLES»(ref-196277-S26013272322006041200000)
  4. Expansion hose Power steering pump - steering gear Note installation position: At power steering pump, see «INSTALLATION POSITION, INTAKE AND EXPANSION HOSES TO POWER STEERING PUMP»(ref-196277-S17597687692006041200000)
  5. Cover with dipstick Check fluid level, see «POWER STEERING FLUID LEVEL, CHECKING; STEERING SYSTEM, BLEEDING AND CHECKING FOR LEAKS»(ref-196277-S13231397802005100800000)
  6. Hex bolt, 9 Nm
  7. Power steering fluid reservoir
  8. Rubber bushing
  9. Return hose Located between power steering fluid reservoir and cooling line Installation position: Restrictor (arrow) faces power steering fluid reservoir
  10. Banjo bolt, 47 Nm M16x1.5
  11. Seals Always replace
  12. Intake hose Power steering pump - power steering fluid reservoir Heed installation position: At vane pump, see «INSTALLATION POSITION, INTAKE AND EXPANSION HOSE AT POWER STEERING PUMP»(ref-196277-S10286888982006041200000) At fluid reservoir, see «INSTALLATION POSITION, INTAKE HOSE AT POWER STEERING FLUID RESERVOIR, VALID FOR ALL ENGINES»(ref-196277-S07629242462006041200000)
  13. Banjo bolt, 50 Nm M18x1.5
  14. Seals Always replace
  15. Clamp Tighten using V.A.G 1275
  16. Power steering fluid cooler
  17. Bolt 1.5 Nm
  18. Power steering pump Before installing fill with fluid, see Notes in «POWER STEERING / OIL CIRCULATION FOR 8-CYLINDER ENGINE»(ref-196277-S09386834262005100800000) Checking delivery pressure. See «DELIVERY PRESSURE OF POWER STEERING PUMP, CHECKING»(ref-196277-S40503574692005100800000) . Assembly overview, see «POWER STEERING PUMP, ASSEMBLY OVERVIEW»(ref-196277-S16838801102005100800000)
  19. Spring nut 1.3 Nm
  20. Sheet-metal screw and washer assembly 2 Nm
  21. Heat shield Different version for vehicles with parking heater
  22. Heat shield
  1. Expansion hose Angle -a- : approx. 74°
  2. Suction pipe Angle -b- : approx. 90°
  1. Pressure pipe Angle -a- : approx. 45°
  2. Return hose Angle -b- : approx. 116°
  1. The marking on intake hose -1- must align with the seam on the power steering fluid reservoir.

Servotronic, assembly overview

The following list pertains to see scheme 144.

  1. Power steering gear with tie rods Assembly Overview, see «POWER STEERING GEAR, ASSEMBLY OVERVIEW»(ref-196277-S37923113222005100800000)
  2. Connector for servotronic
  3. Relay carrier, 13-pin Located under trim in driver's footwell See appropriate System Wiring Diagrams article. Relay for servotronic control module - J236- (position 13) Checking voltage supply, see «SERVOTRONIC, CHECKING VOLTAGE SUPPLY»(ref-196277-S32988239712005100800000) Checking speed signal, see «SPEED SIGNAL, CHECKING»(ref-196277-S08461038462005100800000)
  4. Socket-head bolt, 3 Nm 2.5 mm NOTE: Do not open Torx bolts!
  5. Servotronic solenoid valve - N119- Steering gear must be removed to replace servotronic valve. Checking, see «SERVOTRONIC VALVE, CHECKING»(ref-196277-S09003776022005100800000) NOTE: DO NOT open Torx bolts!
  6. Seal Always replace
  7. Seal Always replace
  8. Sieve Always replace

Description of operation

The automatic function simultaneously adjusts seat belt and steering column (vertically/horizontally).

More articles — Steering