Important!

This replacement procedure can be used for:
MERCEDES-BENZ B-Class (W245) B 180 CDI (245.207), MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208), MERCEDES-BENZ B-Class (W245) B 170 (245.232), MERCEDES-BENZ B-Class (W245) B 200 TURBO (245.234), MERCEDES-BENZ B-Class (W245) B 150 (245.231), MERCEDES-BENZ B-Class (W245) B 170 NGT (245.233), MERCEDES-BENZ B-Class (W245) B 180 NGT (245.233), MERCEDES-BENZ B-Class (W245) B 160 (245.231), MERCEDES-BENZ B-Class (W245) B 180 (245.232), MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208) … View more

The steps may slightly vary depending on the car design.

How to change a front shock strut on MERCEDES-BENZ B200 (W245) [TUTORIAL AUTODOC]

All the parts you need to replace – Shock Absorber for B-Class (W245) and other MERCEDES-BENZ models

Shock absorber

        Shock absorber for B-Class (W245) Diesel (109 hp)
      
        Shock absorber for B-Class (W245) Diesel (140 hp)
      
        Shock absorber for B-Class (W245) Petrol (116 hp)
      
        Shock absorber for B-Class (W245) Petrol (193 hp)
      
        Shock absorber for B-Class (W245) Petrol (95 hp)
      
        Shock absorber for B-Class (W245) Petrol/Natural Gas (CNG) (116 hp)
      
        Shock absorber for B-Class (W245) Petrol/Natural Gas (CNG) (116 hp)
      
        Shock absorber for B-Class (W245) Petrol (95 hp)
      
        Shock absorber for B-Class (W245) Petrol (116 hp)

Replacement: suspension strut – Mercedes W245. Tools you might need:

                        Wire brush
                      
                        WD-40 spray
                      
                        Brake cleaner 
                      
                        Copper grease 
                      
                        Combination spanner #16
                      
                        Combination spanner #21
                      
                        HEX bit no.H6.
                      
                        Drive socket # E12 
                      
                        Drive socket # 21 
                      
                        Drive socket # 22 
                      
                        Wheel impact socket #H12
                      
                        Ratchet wrench
                      
                        Torque wrench
                      
                        Tap wrench
                      
                        Crow bar
                      
                        Hydraulic strut spring compressor
                      
                        Hydraulic transmission jack
                      
                        Fender cover
                      
                        Wheel chock

Buy tools

Replacement: suspension strut – Mercedes W245. Professionals recommend:

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

Replacement: suspension strut – Mercedes W245. 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

Loosen the upper fastener of the shock strut mount. Use a drive socket #E12. Use a ratchet wrench.
Step 4

Secure the wheels with chocks.
Step 5

Loosen the wheel mounting bolts. Use wheel impact socket #H12.
Step 6

Raise the front of the car and secure on supports.
Step 7

Unscrew the wheel bolts.

AUTODOC recommends:
Important! Hold the wheel while unscrewing the fastening bolts. Mercedes W245
Step 8

Remove the wheel.
Step 9

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 10

Unscrew the fastener connecting the stabilizer link to the shock strut. Use a combination spanner #16.
Step 11

Remove the stabilizer rod.
Step 12

Disconnect the ABS sensor wiring. Disconnect the brake pad wear sensor plug.

Replacement: suspension strut – Mercedes W245. Tip from AUTODOC:
Some cars are not equipped with the brake pad wear sensor.
Step 13

Disconnect the brake hose mounting bracket. Use a crowbar.
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 lower fastener connecting the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a tap wrench.
Step 16

Remove the fastening bolt.
Step 17

Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 18

Remove the fastening bolt.
Step 19

Disconnect the steering knuckle from the shock absorber strut.
Step 20

Unscrew the top fastening of the shock strut mount.

Replacement: suspension strut – Mercedes W245. AUTODOC recommends:
To avoid injuries, hold the shock strut when undoing the fastening bolts.
Step 21

Remove the suspension strut.
Step 22

Set the shock absorber strut on the spring compressor tool.

Replacement: suspension strut – Mercedes W245. Tip:
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 23

Compress the spring.
Step 24

Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
Step 25

Remove the strut piston rod nut. Use HEX No.H6. Use a drive socket #21. Use a ratchet wrench.
Step 26

Remove the top strut mount.
Step 27

Release the coil spring.
Step 28

Remove the spring.
Step 29

Remove the shock absorber dust cap and the bump stop.

AUTODOC recommends:
Replacement: suspension strut – Mercedes W245. Carefully inspect the mount, the boot, and the bump stop of the shock absorber. Replace if necessary.
Step 30

Remove the old shock absorber from the hydraulic coil spring compressor.

Replacement: suspension strut – Mercedes W245. AUTODOC experts recommend:
Before installing a new shock absorber you should pump it manually 3-5 times.
Step 31

Install the new shock absorber on the hydraulic coil spring compressor.
Step 32

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

Install the spring on the shock absorber.
Step 34

Compress the spring.
Step 35

Install the upper strut mount and the strut mount bearing.
Step 36

Tighten the shock strut piston rod nut. Use a drive socket #22. Use HEX No.H6. Use a torque wrench. Tighten it to 60 Nm torque.

Replacement: suspension strut – Mercedes W245. Tip from AUTODOC experts:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 37

Treat the shock strut rod. Use copper grease.
Step 38

Decompress the spring.
Step 39

Remove the assembled shock strut.
Step 40

Clean the mounting seats of the shock strut. Use a wire brush. Use WD-40 spray.
Step 41

Install the shock strut into the wheel arch.
Step 42

Screw the top fastening of the shock strut mount. Do not tighten it.

AUTODOC recommends:
Important! Hold the suspension strut while screwing in the fastening bolts. Mercedes W245
Step 43

Fix the shock absorber strut on the steering knuckle.
Step 44

Install the fastening bolts.
Step 45

Screw in the fastener that connects the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a ratchet wrench.
Step 46

Remove the support from under the steering knuckle.

AUTODOC recommends:
Replacement: suspension strut – Mercedes W245. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 47

Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a torque wrench. Tighten it to 120 Nm torque.+90°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 48

Secure the brake hose fastening bracket.
Step 49

Connect the ABS sensor wiring.
Step 50

Connect the brake pad wear sensor plug.

Step 51

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 52

Ιnstall the transverse stabilizer link.
Step 53

Tighten the fastener connecting the stabilizer link to the shock strut. Use a drive socket #16. Use a torque wrench. Tighten it to 60 Nm torque.
Step 54

Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 55

Clean the brake disk surface. Use a brake cleaner.

Replacement: suspension strut – Mercedes W245. AUTODOC recommends:
After applying the spray, wait a few minutes.
Step 56

Treat the shock strut fasteners. Use copper grease.

Step 57

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mercedes W245
Step 58

Screw in the wheel bolts. Use wheel impact socket #H12.
Step 59

Lower the car and working in a cross order, tighten the wheel bolts.
Step 60

Use wheel impact socket #H12. Use a torque wrench. Tighten it to 130 Nm torque.
Step 61

Tighten the upper fastener of the shock absorber strut mount. Use a drive socket #E12. Use a torque wrench. Tighten it to 20 Nm torque.+45°

AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 62

Treat the fasteners of the shock strut mount. Use copper grease.

Step 63

Remove the fender protection cover.
Step 64

Close the hood.
Step 65

Remove the jacks and chocks.

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