Mercedes-Benz C300 Control Arm Assembly Replacement at your home or office.

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Control Arm Assembly Replacement Estimate for Mercedes-Benz C300

Mercedes-Benz C300 Control Arm Assembly Replacement costs $435 on average.

CarServiceEstimateShop/Dealer Price
2017 Mercedes-Benz C300L4-2.0L TurboService typeControl Arm Assembly - Rear Upper Right ReplacementEstimate$324.30Shop/Dealer Price$391.79 - $543.83
2009 Mercedes-Benz C300V6-3.0LService typeControl Arm Assembly - Front Upper Right ReplacementEstimate$529.40Shop/Dealer Price$665.57 - $966.49
2015 Mercedes-Benz C300L4-2.0L TurboService typeControl Arm Assembly - Front Upper Left ReplacementEstimate$749.03Shop/Dealer Price$938.36 - $1447.70
2012 Mercedes-Benz C300V6-3.0LService typeControl Arm Assembly - Front Upper Right ReplacementEstimate$1028.86Shop/Dealer Price$1289.63 - $1969.46
2018 Mercedes-Benz C300L4-2.0L TurboService typeControl Arm Assembly - Front Upper Right ReplacementEstimate$835.26Shop/Dealer Price$1026.67 - $1536.58
2010 Mercedes-Benz C300V6-3.0LService typeControl Arm Assembly - Rear Lower Left ReplacementEstimate$642.93Shop/Dealer Price$808.86 - $1159.98
2012 Mercedes-Benz C300V6-3.0LService typeControl Arm Assembly - Front Upper Left ReplacementEstimate$1023.02Shop/Dealer Price$1279.29 - $1946.55
2016 Mercedes-Benz C300L4-2.0L TurboService typeControl Arm Assembly - Front Upper Right ReplacementEstimate$736.27Shop/Dealer Price$921.24 - $1426.30
Show example Mercedes-Benz C300 Control Arm Assembly Replacement prices

Control Arm Assembly Replacement Service

What is a control arm and how does it work?

A control arm is a suspension component, usually made of heavy gauge steel or aluminum, that links the steering knuckle in the front — or axle carrier in the rear — to the frame of the vehicle. Many vehicles have upper and lower control arms. The inboard link(s) of the arm securely bolt to the frame of the vehicle through rubber bushings, while the outboard link of the control arm connects to the steering knuckle through a ball joint; all of which allow the control of the up and down movement of the steering knuckle or axle carrier. This minimizes the transmission of shock and vibration to the vehicle’s body.

When to consider replacing a control arm:

The structural portion of the control arm can last the life of the vehicle — except for cases of corrosion or crash damage. However, the rubber bushings and the ball joint in a control arm have a limited life. A mechanic should investigate if you notice:

  • Wheel alignment difficulties. Should the bushings, or the ball joint, in a control arm be worn, it will be impossible to properly align the vehicle. The worn components, or the entire arm, must be replaced.
  • Vehicle won’t track straight or pulls to one side. A car will not track straight and may require constant steering correction if there is a worn, bent, or loose control arm.
  • Clunking or squeaking noise. A loose control arm, or a control arm with dried out, rotted, or loose bushings, may move enough to cause detectable noise from the suspension as you go over bumps in the road.
  • Vehicle pulls to one side only when braking. Worn bushings or ball joints can allow control arm to shift when braking, causing the vehicle to pull to one side. Although, this could also be caused by brake calipers.

How do mechanics replace a control arm?

  • The vehicle is raised and supported on steel jack stands, and the wheel and tire assembly is removed.
  • Stabilizer bar links are detached from the control arm, if applicable. ABS wiring to the wheel speed sensor, if routed along the arm, is disconnected.
  • Control arm mounting bolts are detached from the frame and from the axle carrier if the control arm is in the rear.
  • For front control arms connected to the steering knuckle via a ball joint, the nut is removed from the ball joint stud and the stud is pushed through the steering knuckle to free the arm.
  • The arm is lowered from the vehicle and examined by the mechanic to confirm that the noise, or other problem, actually originated from a defect in the arm.
  • The new arm is installed using new mounting bolts if required by the service manual. In many cases, the fasteners must be tightened with the vehicle weight on the suspension in order to ensure the bushings are in a neutral, or resting, position.
  • The vehicle is lowered and road tested to confirm the problem is resolved. Replacing a control arm will change the vehicle alignment settings and the mechanic will refer you to a professional alignment shop to have the vehicle alignment set to factory specifications.

Is it safe to drive with a control arm problem?

No. If the car wanders on the road, pulls to one side, or noise from the suspension is loud, you need to schedule repair right away. Should the problem be limited to low levels of noise, such as clunking or squeaking, continued use of the car is reasonable until you can schedule a repair. Should the control arms be damaged as a result of a collision, it would be unsafe to drive the car until it is repaired.

When replacing a control arm keep in mind:

  • The number of control arm types vary from vehicle to vehicle depending on the design of the vehicle suspension.
  • Control arms should be replaced in pairs — arms on both sides of a front or rear axle — if the reason for replacement is worn control arm bushings or a worn ball joint.
  • All other suspension components should be inspected when control arms are replaced because looseness, damage, or excessive wear in other parts of the suspension system will make it impossible to perform a wheel alignment after the control arms are replaced.

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Pardeep

21 years of experience
988 reviews
Pardeep
21 years of experience
Mercedes-Benz C300 V6-3.0L - Fog/Driving Light Bulb Replacement (Driver Side) - Mountain View, California
Pardeep did a great job! He came on time and performed all services very quickly. Highly recommend!

Keith

18 years of experience
356 reviews
Keith
18 years of experience
Mercedes-Benz C300 V6-3.0L - Oil Change - Dundee, Florida
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30 years of experience
289 reviews
Clifton
30 years of experience
Mercedes-Benz C300 L4-2.0L Turbo - Tire Rotation - West Palm Beach, Florida
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16 years of experience
435 reviews
Alex
16 years of experience
Mercedes-Benz C300 V6-3.0L - Brake Pads Replacement (Front) - Mesquite, Texas
I felt a great sense of relief when Alex worked on my car. He is very knowledgeable and passionate when it comes to cars. Every question I threw at him was meet with a detailed and friendly answer. Also, he took the time to check other things that he did not have to and informed me of other potential problems. Almost every other mechanic I have ever meet would not have done that. He did a great job on my Mercedes Benz. I will definitely be using him for ANY and ALL future car services.

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Rating Summary
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431
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