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How to change rear suspension lower control arm on Mercedes W203 – replacement guide
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Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W203) C 180 (203.035), MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.045), MERCEDES-BENZ C-Class Saloon (W203) C 320 (203.064), MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.004), MERCEDES-BENZ C-Class Saloon (W203) C 270 CDI (203.016), MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.006, 203.008), MERCEDES-BENZ C-Class Saloon (W203) C 32 AMG Kompressor (203.065), MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.004), MERCEDES-BENZ C-Class Saloon (W203) C 180 Kompressor (203.046), MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.042), MERCEDES-BENZ C-Class Saloon (W203) C 240 4-matic (203.081), MERCEDES-BENZ C-Class Saloon (W203) C 320 4-matic (203.084), MERCEDES-BENZ C-Class Saloon (W203) C 30 CDI AMG (203.018), MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.007), MERCEDES-BENZ C-Class Saloon (W203) C 200 CGI Kompressor (203.043), MERCEDES-BENZ C-Class Saloon (W203) C 230 Kompressor (203.040), MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.008), MERCEDES-BENZ C-Class Saloon (W203) C 55 AMG (203.076), MERCEDES-BENZ C-Class Saloon (W203) C 320 CDI (203.020), MERCEDES-BENZ C-Class Saloon (W203) C 280 (203.054), MERCEDES-BENZ C-Class Saloon (W203) C 280 4-matic (203.092), MERCEDES-BENZ C-Class Saloon (W203) C 350 (203.056), MERCEDES-BENZ C-Class Saloon (W203) C 350 4-matic (203.087), MERCEDES-BENZ C-Class Saloon (W203) C 230 (203.052), MERCEDES-BENZ C-Class Saloon (W203) 3.5 (203.056), MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.006), MERCEDES-BENZ C-Class Saloon (W203) C 270 CDI (203.016) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ C-Class Saloon (W203) C 180 (203.035), MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.045), MERCEDES-BENZ C-Class Saloon (W203) C 320 (203.064), MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.004), MERCEDES-BENZ C-Class Saloon (W203) C 270 CDI (203.016), MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.006, 203.008), MERCEDES-BENZ C-Class Saloon (W203) C 32 AMG Kompressor (203.065), MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.004), MERCEDES-BENZ C-Class Saloon (W203) C 180 Kompressor (203.046), MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.042), MERCEDES-BENZ C-Class Saloon (W203) C 240 4-matic (203.081), MERCEDES-BENZ C-Class Saloon (W203) C 320 4-matic (203.084), MERCEDES-BENZ C-Class Saloon (W203) C 30 CDI AMG (203.018), MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.007), MERCEDES-BENZ C-Class Saloon (W203) C 200 CGI Kompressor (203.043), MERCEDES-BENZ C-Class Saloon (W203) C 230 Kompressor (203.040), MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.008), MERCEDES-BENZ C-Class Saloon (W203) C 55 AMG (203.076), MERCEDES-BENZ C-Class Saloon (W203) C 320 CDI (203.020), MERCEDES-BENZ C-Class Saloon (W203) C 280 (203.054), MERCEDES-BENZ C-Class Saloon (W203) C 280 4-matic (203.092), MERCEDES-BENZ C-Class Saloon (W203) C 350 (203.056), MERCEDES-BENZ C-Class Saloon (W203) C 350 4-matic (203.087), MERCEDES-BENZ C-Class Saloon (W203) C 230 (203.052), MERCEDES-BENZ C-Class Saloon (W203) 3.5 (203.056), MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.006), MERCEDES-BENZ C-Class Saloon (W203) C 270 CDI (203.016) … View more
The steps may slightly vary depending on the car design.
How to change rear suspension arm on MERCEDES-BENZ W203 C-Class [TUTORIAL AUTODOC]

All the parts you need to replace – Control Arm for C-Class Saloon (W203) and other MERCEDES-BENZ models
Alternative products

Wire brush
WD-40 spray
Brake cleaner
Copper grease
Torque wrench
Combination spanner #16
HEX bit No.H5.
XZN socket bit # 12
Drive socket # 10
Drive socket # 19
Wheel impact socket #17
Ratchet wrench
Hammer
Crow bar
Tap wrench
Ball joint puller
Hydraulic transmission jack
Wheel chock
Replacement: rear suspension lower control arm – Mercedes W203. AUTODOC experts recommend:
- The replacement procedure is identical for the left and right lower control arms.
- All work should be done with the engine stopped.
Replacement: rear suspension lower control arm – Mercedes W203. Use the following procedure:
- Step 1Secure the wheels with chocks.Step 2
Loosen the wheel mounting bolts. Use wheel impact socket #17. - Step 3
Raise the rear of the car and secure on supports. - Step 4
Unscrew the wheel bolts.AUTODOC recommends:Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Mercedes W203 - Step 5
Remove the wheel. - Step 6Unscrew the fasteners of the plastic car body protective cover. Use a drive socket #10. Use a ratchet wrench.Step 7
Remove the plastic car body protective cover. - Step 8
Clean all joints of the arm. Use a wire brush. Use WD-40 spray. - Step 9
Make a mark on the camber adjustment bolt. - Step 10
Unscrew the fastener connecting the control arm to the subframe. Use XZN #12. Use a drive socket #19. Use a tap wrench. - Step 11
Remove the fastening bolt. Use a crowbar. Use a hammer. - Step 12
Unscrew the fastener connecting the control arm to the rear knuckle. Use a combination spanner #16. Use HEX No.H5. Use a ratchet wrench. - Step 13
Detach the ball joint from the rear knuckle. Use a ball joint puller. - Step 14
Remove the arm. Use a crowbar. - Step 15
Clean the mounting seats and the thread of the suspension arm. Use a wire brush. Use WD-40 spray. - Step 16
Install a new arm.AUTODOC recommends:Replacement: rear suspension lower control arm – Mercedes W203. Use only new bolts and nuts for installation.Do not damage the ball joint cover. - Step 17
Install the fastening bolt. - Step 18Attach the ball joint to the rear knuckle.Step 19
Screw in the fasteners connecting the control arm to the rear knuckle. Use a combination spanner #16. Use HEX No.H5. Use a ratchet wrench. - Step 20
Adjust the position of the alignment bolt according to the mark.
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