Important!

This replacement procedure can be used for:
AUDI A6 Saloon (4B2, C5) 2.5 TDI, AUDI A6 Saloon (4B2, C5) 2.5 TDI quattro, AUDI A6 Saloon (4B2, C5) 2.5 TDI, AUDI A6 Saloon (4B2, C5) 2.5 TDI … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Springs for A6 Saloon (4B2, C5) and other AUDI models

Coil spring

        Coil spring for A6 C5 Saloon (4B2) Diesel (180 hp)
      
        Coil spring for A6 C5 Saloon (4B2) Diesel (180 hp)
      
        Coil spring for A6 C5 Saloon (4B2) Diesel (155 hp)
      
        Coil spring for A6 C5 Saloon (4B2) Diesel (163 hp)

Replacement: coil springs – AUDI A6 (4B2, C5). Tools you need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Combination spanner #16
                      
                        Combination spanner #18
                      
                        Drive socket # 13 
                      
                        Drive socket # 15 
                      
                        Drive socket # 16 
                      
                        Drive socket # 18 
                      
                        HEX bit no.H6.
                      
                        Wheel impact socket #17
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Pin punch
                      
                        Hammer
                      
                        Crow bar
                      
                        Hydraulic strut spring compressor
                      
                        Hydraulic transmission jack
                      
                        Fender cover
                      
                        Wheel chock

Buy tools

Replacement: coil springs – AUDI A6 (4B2, C5). AUTODOC recommends:

Both coil springs of the front suspension should be replaced simultaneously.
The replacement procedure is identical for the left and right coil springs of the front suspension.
All work should be done with the engine stopped.

Replacement: coil springs – AUDI A6 (4B2, C5). Recommended sequence of steps:

Step 1

Open the bonnet.

Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.

Step 3

Remove the cowl grille seal.
Step 4

Raise up and remove the cowl grille.
Step 5

Clean the fasteners of the shock strut upper mount. Use a wire brush. Use WD-40 spray.
Step 6

Loosen the upper fastener of the shock strut mount. Use a drive socket #16. Use a ratchet wrench.
Step 7

Secure the wheels with chocks.
Step 8

Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 9

Raise the front of the car and secure on supports.

Step 10

Unscrew the wheel bolts.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. AUDI A6 (4B2, C5)
Step 11

Remove the wheel.
Step 12

Clean all joints of the arm. Use a wire brush. Use WD-40 spray.
Step 13

Unscrew the upper control arm fasteners (2 pieces). Use a combination spanner #16. Use a drive socket #16.
Step 14

Remove the fastening bolt. Use a pin punch. Use a hammer.
Step 15

Detach the upper control arm from the steering knuckle (2 pieces). Use a crowbar.
Step 16

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 17

Unscrew the fastener connecting the stabilizer link to the stabilizer bar. Use a combination spanner #16 (2 pieces).
Step 18

Unscrew the fastener connecting the stabilizer bar with the control arm. Use a combination spanner #16 (2 pieces).
Step 19

Remove the stabilizer rod.

Replacement: coil springs – AUDI A6 (4B2, C5). Tip:
Examine stabiliser bushes. Replace them if needed.
Step 20

Clean the shock strut fasteners. Use a wire brush. Use WD-40 spray.
Step 21

Unscrew the lower fastener of the shock absorber strut. Use a drive socket #18. Use a combination spanner #18.
Step 22

Remove the fastening bolt.
Step 23

Detach the bottom part of the shock strut. Use a crowbar.
Step 24

Unscrew the top fastening of the shock strut mount.

AUTODOC recommends:
AUDI A6 (4B2, C5) – Do not lower the transmission jack sharply to avoid damaging components and mechanisms of the car.
Step 25

Remove the suspension strut.
Step 26

Clean the fasteners of the shock strut upper mount. Use a wire brush. Use WD-40 spray.
Step 27

Loosen the upper fastener of the shock strut mount. Use a drive socket #13.
Step 28

Remove the upper shock absorber mount assembled with the control arms.
Step 29

Set the shock absorber strut on the spring compressor tool.

Replacement: coil springs – AUDI A6 (4B2, C5). Tip from AUTODOC experts:
Note that when using a spring compressor, spring coils need to be securely gripped, compressing the spring on the opposite sides.Ensure the correct position of the spring in the retainer.Make sure that the spring coils tightly entered the lock handles.
Step 30

Compress the spring.
Step 31

Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
Step 32

Remove the strut piston rod nut. Use HEX No.H6. Use a drive socket #18. Use a ratchet wrench.
Step 33

Remove the top strut mount. Use a crowbar.
Step 34

Release the coil spring.
Step 35

Remove the spring.
Step 36

Remove the shock absorber dust cap and the bump stop.

AUTODOC recommends:
Replacement: coil springs – AUDI A6 (4B2, C5). Carefully inspect the mount, the boot, and the bump stop of the shock absorber. Replace if necessary.
Step 37

Install the spring on the shock absorber.
Step 38

Compress the spring.
Step 39

Install the dust sleeve and the bump stop on the new shock absorber.
Step 40

Install the upper strut mount and the strut mount bearing.
Step 41

Tighten the shock strut piston rod nut. Use HEX No.H6. Use a drive socket #18. Use a torque wrench. Tighten it to 50 nm torque.

Replacement: coil springs – AUDI A6 (4B2, C5). Tip from AUTODOC experts:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 42

Decompress the spring. Remove the assembled shock strut.
Step 43

Treat the shock strut rod. Use copper grease.
Step 44

Install the upper shock absorber mount assembled with the control arms.
Step 45

Tighten the upper fastener of the shock absorber strut mount. Use a drive socket #13. Use a torque wrench. Tighten it to 22 nm torque.
Step 46

Install the shock strut into the wheel arch.
Step 47

Screw the top fastening of the shock strut mount. Use a drive socket #15. Use a ratchet wrench. Do not tighten it.

AUTODOC recommends:
AUDI A6 (4B2, C5) – To avoid injury, hold the suspension strut while screwing in the fastening bolts.
Step 48

Clean the mounting seats of the shock strut. Use a wire brush. Use WD-40 spray.
Step 49

Attach the suspension control arm to the shock strut.
Step 50

Install the fastening bolt.
Step 51

Screw in the lower fastener of the shock strut. Use a combination spanner #18. Use a drive socket #18.
Step 52

Clean the mounting seats and the thread of the suspension arm. Use a wire brush. Use WD-40 spray.
Step 53

Treat all joints of the arm. Use copper grease.
Step 54

Attach the upper control arm to the steering knuckle (2 pieces).
Step 55

Install the fastening bolt.
Step 56

Screw in the fasteners (2 pieces) of the upper control arm. Use a combination spanner #16. Use a drive socket #16.
Step 57

Support the arm. Use a hydraulic transmission jack.
Step 58

Tighten the lower fastening of the shock absorber. Use a combination spanner #18. Use a drive socket #18. Use a torque wrench. Tighten it to 90 Nm torque.
Step 59

Tighten the upper control arm fasteners (2 pieces). Use a combination spanner #16. Use a drive socket #16. Use a torque wrench. Tighten it to 40 Nm torque.
Step 60

Remove the support from under the arm.

AUTODOC recommends:
Replacement: coil springs – AUDI A6 (4B2, C5). Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 61

Clean the mounting seats of the stabiliser link. Use a wire brush. Use WD-40 spray.
Step 62

Ιnstall the transverse stabilizer link.
Step 63

Tighten the fastener connecting the stabilizer bar with the control arm. Use a combination spanner #16. Use a drive socket #16. Use a torque wrench. Tighten it to 40 Nm torque.+90°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 64

Tighten the fastener connecting the stabilizer link to the stabilizer bar. Use a combination spanner #16. Use a drive socket #16. Use a torque wrench. Tighten it to 40 Nm torque.+90°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 65

Treat all joints of the arm. Treat the shock strut fasteners. Use copper grease.
Step 66

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 67

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
Replacement: coil springs – AUDI A6 (4B2, C5). After applying the spray, wait a few minutes.
Step 68

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. AUDI A6 (4B2, C5)
Step 69

Screw in the wheel bolts. Use wheel impact socket #17.
Step 70

Lower the car and working in a cross order, tighten the wheel bolts. Use a torque wrench. Tighten it to 120 nm torque.
Step 71

Remove the jacks and chocks.
Step 72

Tighten the upper fastener of the shock absorber strut mount. Use a drive socket #16. Use a torque wrench. Tighten it to 65 nm torque.
Step 73

Install and secure the cowl grille.
Step 74

Install the cowl grille seal.

Step 75

Remove the fender protection cover.

Step 76

Close the hood.

Was this manual helpful?

Please rate this manual on a scale from 1 to 5. If you have any questions, feel free to ask us.

Searching for the right tyres?

Find out which tyre and wheel sizes are compatible with the AUDI A6 C5 Saloon (4B2) model.

Audi A6 C5 Saloon tyre size

How to change rear shock absorbers on AUDI A6 Saloon (4B2, C5) – replacement guide

Free download PDF
1.92 MB
How to change front suspension strut on AUDI A6 Saloon (4B2, C5) – replacement guide

Free download PDF
3.85 MB
How to change rear brake pads on AUDI A6 Saloon (4B2, C5) – replacement guide

Free download PDF
1.54 MB
How to change front brake pads on AUDI A6 Saloon (4B2, C5) – replacement guide

Free download PDF
1.6 MB
How to change rear brake discs on AUDI A6 Saloon (4B2, C5) – replacement guide

Free download PDF
1.66 MB
How to change front brake discs on AUDI A6 Saloon (4B2, C5) – replacement guide

Free download PDF
2.03 MB

How to change front coil springs on AUDI A6 C6 Avant (4F5) – replacement guide

Free download PDF
3.85 MB
How to change front coil springs on Audi A6 4F2 – replacement guide

Free download PDF
3.93 MB
How to change front coil springs on AUDI A6 Avant (4B5, C5) – replacement guide

Free download PDF
3.7 MB
How to change coil springs on a car – replacement tutorial

Universal

Free download PDF
1.91 MB
How to change front coil springs on Audi A4 B8 – replacement guide

Free download PDF
5.41 MB
How to change front coil springs on Audi A3 8PA – replacement guide

Free download PDF
3.9 MB

Your profile is your personal assistant.

It can track car expenses, keep a car log and replacement schedule, and save favourite materials, notes and documents

Install the AUTODOC CLUB app!

Your personal car expenses manager, maintenance tips, reminders about upcoming appointments and service intervals, DIY repair instructions – all this on your phone.

Scan

To download the app:

- scan the QR code
- download from App Store
- download from Google Play

The most common problems when buying a used car | AUTODOC

4K views

Published on: 10/11/2022
How to easily repair a punctured tyre | AUTODOC tips

3K views

Published on: 25/02/2021
Top 5 mistakes when working in the engine bay | AUTODOC tips

7K views

Published on: 04/08/2023
How to start a car after a long idle period | AUTODOC tips

6K views

Published on: 20/05/2021