Important!

This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W204) C 200 CDI (204.007, 204.006), MERCEDES-BENZ C-Class Saloon (W204) C 180 Kompressor (204.046), MERCEDES-BENZ C-Class Saloon (W204) C 200 Kompressor (204.041), MERCEDES-BENZ C-Class Saloon (W204) C 230 (204.052), MERCEDES-BENZ C-Class Saloon (W204) C 280 (204.054), MERCEDES-BENZ C-Class Saloon (W204) C 180 Kompressor (204.044, 204.045), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.002), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.008), MERCEDES-BENZ C-Class Saloon (W204) C 220 CDI (204.002) … View more

The steps may slightly vary depending on the car design.

How to change front springs on MERCEDES W204 [TUTORIAL AUTODOC]

All the parts you need to replace – Springs for C-Class Saloon (W204) and other MERCEDES-BENZ models

Coil spring

        Coil spring for C-Class Saloon (W204) Diesel (136 hp)
      
        Coil spring for C-Class Saloon (W204) Petrol (156 hp)
      
        Coil spring for C-Class Saloon (W204) Petrol (184 hp)
      
        Coil spring for C-Class Saloon (W204) Petrol (204 hp)
      
        Coil spring for C-Class Saloon (W204) Petrol (231 hp)
      
        Coil spring for C-Class Saloon (W204) Petrol (156 hp)
      
        Coil spring for C-Class Saloon (W204) Diesel (170 hp)
      
        Coil spring for C-Class Saloon (W204) Diesel (163 hp)
      
        Coil spring for C-Class Saloon (W204) Diesel (163 hp)

Replacement: coil springs – Mercedes W204. List of the tools you'll need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Ceramic grease
                      
                        Copper grease 
                      
                        Torque wrench
                      
                        Drive socket # 18 
                      
                        Drive socket # 21 
                      
                        Torx bit E12
                      
                        Torx bit E14
                      
                        Torx bit E18
                      
                        Torx bit T50
                      
                        21-mm strut nut socket
                      
                        Wheel impact socket #17
                      
                        Ratchet wrench
                      
                        Flat screwdriver
                      
                        Crow bar
                      
                        Hydraulic transmission jack
                      
                        Hydraulic strut spring compressor
                      
                        Fender cover
                      
                        Wheel chock

Buy tools

Replacement: coil springs – Mercedes W204. Tip from AUTODOC:

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.
Please note: all work on the car – Mercedes W204 – should be done with the engine switched off.

Carry out replacement in the following order:

Step 1

Open the bonnet.
Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3

Clean the fasteners of the shock strut upper mount. Use a wire brush. Use WD-40 spray.
Step 4

Loosen the upper fasteners of the suspension strut. Use Torx E12. Use a ratchet wrench.
Step 5

Secure the wheels with chocks.

Step 6

Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 7

Raise the car.

Replacement: coil springs – Mercedes W204. Professionals recommend:
If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands.
Step 8

Unscrew the wheel bolts.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Mercedes W204
Step 9

Remove the wheel.
Step 10

Clean the fastener that connects the sway bar link to the suspension strut. Use a wire brush. Use WD-40 spray.
Step 11

Unscrew the fastener connecting the stabilizer link to the shock strut. Use a drive socket #18. Use a ratchet wrench.
Step 12

Remove the stabilizer rod.
Step 13

Disconnect the ABS sensor wiring.
Step 14

Clean the fasteners connecting the shock strut to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 15

Unscrew the fasteners connecting the suspension strut to the steering knuckle. Use a drive socket #21. Use Torx E14. Use Torx E18. Use a ratchet wrench.
Step 16

Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 17

Remove the fastening bolts.
Step 18

Disconnect the steering knuckle from the shock absorber strut. Use a crowbar.
Step 19

Unscrew the upper fasteners of the shock strut.

AUTODOC recommends:
Mercedes W204 – To avoid injury, hold the suspension strut while unscrewing the fastening bolts.
Step 20

Remove the suspension strut.
Step 21

Set the suspension strut on the spring compressor tool.

Replacement: coil springs – Mercedes W204. Professionals recommend:
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 22

Remove the dust cap from the suspension strut mount. Use a flat screwdriver.
Step 23

Compress the spring.
Step 24

Clean the strut piston rod. Use a wire brush. Use WD-40 spray.
Step 25

Remove the strut piston rod nut. Use a 21-mm strut nut socket. Use Torx T50. Use a ratchet wrench.
Step 26

Remove the top strut mount.
Step 27

Remove the shock absorber dust cap and the bump stop.

AUTODOC recommends:
Τhoroughly examine the shock absorber mount, dust boot, bump stop. Replace them if necessary.
Step 28

Release the coil spring.
Step 29

Remove the spring.
Step 30

Install the spring on the shock absorber.
Step 31

Compress the spring.
Step 32

Install the dust sleeve and the bump stop on the new shock absorber.
Step 33

Install the upper strut mount and the strut mount bearing.

Replacement: coil springs – Mercedes W204. Tip:
Make sure that the suspension strut is installed in the correct position, according to the markings.
Step 34

Tighten the shock strut piston rod nut. Use a 21-mm strut nut socket. Use Torx T50. Use a torque wrench. Tighten it to 85 Nm torque.
Step 35

Decompress the spring.
Step 36

Treat the shock strut rod. Use copper grease.
Step 37

Install the dust cap on the suspension strut mount.
Step 38

Remove the assembled shock strut.
Step 39

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

Install the shock strut into the wheel arch.
Step 41

Secure the upper fasteners of the shock strut. Do not tighten it. Use Torx E12. Use a ratchet wrench.

AUTODOC recommends:
Mercedes W204 – To avoid injury, hold the suspension strut while screwing in the fastening bolts.
Step 42

Fix the shock absorber strut on the steering knuckle.
Step 43

Install the fastening bolts.
Step 44

Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a drive socket #21. Use Torx E18. Use a torque wrench. Tighten it to 100 Nm torque.+90°
Step 45

Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use Torx E14. Use a torque wrench. Tighten it to 100 Nm torque.
Step 46

Remove the support from under the steering knuckle.

AUTODOC recommends:
Replacement: coil springs – Mercedes W204. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 47

Connect the ABS sensor wiring.
Step 48

Ιnstall the transverse stabilizer link.
Step 49

Tighten the fastener connecting the stabilizer link to the shock strut. Use a drive socket #18. Use a torque wrench. Tighten it to 98 Nm torque.
Step 50

Treat the fastener that connects the sway bar link to the suspension strut. Treat the shock strut fasteners. Use copper grease.
Step 51

Clean the wheel rim mounting seat. Use a wire brush.
Step 52

Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
Step 53

Clean the brake disk surface. Use a brake cleaner.

AUTODOC recommends:
After applying the spray, wait a few minutes.
Step 54

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mercedes W204
Step 55

Screw in the wheel bolts. Use wheel impact socket #17.
Step 56

Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 130 Nm torque.
Step 57

Remove the jacks and chocks.
Step 58

Tighten the upper fasteners of the shock strut. Use Torx E12. Use a torque wrench. Tighten it to 33 Nm torque.
Step 59

Treat the shock strut fasteners. Use copper grease.
Step 60

Remove the fender protection cover.
Step 61

Close the hood.

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