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This guide provides instructions on how to replace sway bar bushings on a Mercedes-Benz, also known as torsion bar bushings. 

Table of Contents

The pictures and video are from a 2010 Mercedes-Benz GL550, but Mercedes-Benz uses the same setup on almost all models, including the E-Class, C-Class, S-Class, CLK-Class, SL-Class, ML-Class, R-Class. The part numbers are different for each model, but the repair and replacement procedure remains the same. 

Symptoms

Common symptoms of bad swaybar bushings include:

  • The suspension feels loose.
  • Clunking noise from front-end suspension.

What you will need

Parts

Tools

Procedure

  1. Park the vehicle on level ground and set the parking brakes.
  2. Allow the engine to cool down. For your additional safety, place a wedge on both sides of the rear wheel.
  3. Raise the vehicle and support with jack stands. Remove front wheels.
  4. Remove splash shield under the car. It is held in place with multiple 8mm screws. 
  5. Spray penetrating oil on the sway bar's bolts, then wait for fifteen minutes.
  6. Hoist the opposite side of the sway bar support to make it possible to loosen the tension on the side being replaced.
  7. Using a small screwdriver, remove the dirt that has accumulated on the bolts to expose it.remove dirt

     

  8. Loosen the bracket retaining bolts using an 18mm socket and a breaker bar.remove Sway Bar Retaining bolts

     

  9. Remove the retaining bolts using an 18mm socket and a ratchet wrench.remove bracke tretaining bolts

     

  10. Remove the sway bar support retaining nut using a 13mm socket wrench (optional impact wrench). It is recommended to use another 13mm socket wrench into the bolt to counteract the rotation of the bolt.remove bushig retaining nut

     

  11. Push the sway bar support retaining bolt out.remove sway bar bolt

     

  12. Remove the bushings, lower bushing first, then upper bushing.removebushingsremoveupperbushings
  13. Prepare the new bushing.Mercedes sway bar bushing
  14. Install the upper bushings first; you may need to slide it in place.Installupperhushing

     

  15. Install lower bushings.installlowerbushing

     

  16. Install sway bar support retaining bolt and nut.installbaltandscrews

     

  17. Install the bracket and fasten the retaining bolt by hand.installnbracketbyhand

     

  18. Fasten bracket bolt using a ratchet wrench with an 18mm socket.installbracketTRachet

     

  19. Torque the bolts at specifications. It is recommended to torque the sway bar bushing bolts when the vehicle is lowered, and the wheels are on the ground.  Repeat the procedure for the bushing on the other side. 
  20. Reinstall the splash shield.
  21. Install wheels. Lower vehicle. Remove the jack stands and jack and torque the lug nuts. 

Torque Specifications

  • Sway bar bushing bolts* - 50 ft-lbs, 70 Nm
  • Wheel lug nuts* -  90  ft-lbs

These are typical values and may vary between models. Call your vehicle dealer and verify. 

Frequently Asked Question

How do you know if your sway bar bushing is bad?

  • One of the common symptoms of sway bar bushing problems is a clunking noise from the front end suspension and a feeling of loose suspension.

Can you drive a Mercedes-Benz with a sway bar bushing is bad?

  • It is not recommended to drive a car with a bad sway bar bushing, for it may lead to driving instability.
Mercedes-Benz Sway Bar Bushing Replacement This guide provides instructions on how to replace sway bar bushings on a Mercedes-Benz, also known as torsion bar bushings.