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) … View more

The steps may slightly vary depending on the car design.

How to change front springs / front coil springs on MERCEDES-BENZ B200 (W245) [TUTORIAL AUTODOC]

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

Coil spring

Coil spring buffer

        Coil spring for MERCEDES-BENZ B-Class (W245) B 180 CDI (245.207) Diesel (109 hp)
      
        Coil spring for MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208) Diesel (140 hp)
      
        Coil spring for MERCEDES-BENZ B-Class (W245) B 170 (245.232) Petrol (116 hp)
      
        Coil spring for MERCEDES-BENZ B-Class (W245) B 200 TURBO (245.234) Petrol (193 hp)
      
        Coil spring for MERCEDES-BENZ B-Class (W245) B 150 (245.231) Petrol (95 hp)

Replacement: coil springs – Mercedes W245. Tools you'll 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: coil springs – Mercedes W245. Tip from AUTODOC experts:

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.
Warning! Shut down the engine before starting any work – Mercedes W245.

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

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.

Replacement: coil springs – Mercedes W245. AUTODOC recommends:
To avoid injury, hold up the wheel when unscrewing the bolts.
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: coil springs – Mercedes W245. Tip:
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.

AUTODOC recommends:
Important! Hold the suspension strut while unscrewing the fastening bolts. Mercedes W245
Step 21

Remove the suspension strut.
Step 22

Set the shock absorber strut on the spring compressor tool.

Replacement: coil springs – Mercedes W245. 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 23

Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
Step 24

Compress the spring.
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: coil springs – Mercedes W245. Carefully inspect the mount, the boot, and the bump stop of the shock absorber. Replace if necessary.
Step 30

Install the dust sleeve and the bump stop on the new shock absorber.
Step 31

Install the spring on the shock absorber.
Step 32

Compress the spring.
Step 33

Install the upper strut mount and the strut mount bearing.
Step 34

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: coil springs – Mercedes W245. Tip from AUTODOC:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 35

Treat the shock strut rod. Use copper grease.
Step 36

Decompress the spring.
Step 37

Remove the assembled shock strut.
Step 38

Clean the mounting seats of the shock strut. Use a wire brush. Use WD-40 spray.
Step 39

Install the shock strut into the wheel arch.
Step 40

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

AUTODOC recommends:
Mercedes W245 – To avoid injury, hold the suspension strut while screwing in the fastening bolts.
Step 41

Fix the shock absorber strut on the steering knuckle.
Step 42

Install the fastening bolts.
Step 43

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 44

Remove the support from under the steering knuckle.

AUTODOC recommends:
Replacement: coil springs – Mercedes W245. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 45

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 46

Secure the brake hose fastening bracket.
Step 47

Connect the ABS sensor wiring.
Step 48

Connect the brake pad wear sensor plug.

Step 49

Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 50

Ιnstall the transverse stabilizer link.
Step 51

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 52

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

Clean the brake disk surface. Use a brake cleaner.

Replacement: coil springs – Mercedes W245. Tip:
After applying the spray, wait a few minutes.
Step 54

Treat the shock strut fasteners. Use copper grease.
Step 55

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mercedes W245
Step 56

Screw in the wheel bolts. Use wheel impact socket #H12.
Step 57

Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #H12. Use a torque wrench. Tighten it to 130 Nm torque.
Step 58

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 59

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

Step 60

Remove the fender protection cover.
Step 61

Close the hood.
Step 62

Remove the jacks and chocks.

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