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Mercedes-Benz 300E Control Arm Assembly Replacement at your home or office.

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Control Arm Assembly Replacement Service

How much does a Control Arm Assembly Replacement cost?

On average, the cost for a Mercedes-Benz 300E Control Arm Assembly Replacement is $302 with $120 for parts and $182 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1993 Mercedes-Benz 300EL6-3.0LService typeControl Arm Assembly - Rear Upper Right ReplacementEstimate$470.26Shop/Dealer Price$545.64 - $753.35
1991 Mercedes-Benz 300EL6-3.0LService typeControl Arm Assembly - Rear Lower Left ReplacementEstimate$429.75Shop/Dealer Price$493.91 - $677.01
1993 Mercedes-Benz 300EL6-3.2LService typeControl Arm Assembly - Front Lower Right ReplacementEstimate$714.32Shop/Dealer Price$836.39 - $1190.14
1992 Mercedes-Benz 300EL6-2.6LService typeControl Arm Assembly - Front Lower Right ReplacementEstimate$920.44Shop/Dealer Price$1094.03 - $1602.37
1992 Mercedes-Benz 300EL6-3.0LService typeControl Arm Assembly - Rear Lower Right ReplacementEstimate$429.75Shop/Dealer Price$497.32 - $682.97
1993 Mercedes-Benz 300EL6-2.8LService typeControl Arm Assembly - Rear Lower Right ReplacementEstimate$429.75Shop/Dealer Price$494.28 - $677.66
1993 Mercedes-Benz 300EL6-3.2LService typeControl Arm Assembly - Front Upper Left ReplacementEstimate$994.13Shop/Dealer Price$1196.15 - $1791.90
1992 Mercedes-Benz 300EL6-3.0LService typeControl Arm Assembly - Rear Upper Right ReplacementEstimate$458.55Shop/Dealer Price$529.96 - $734.70
Show example Mercedes-Benz 300E Control Arm Assembly Replacement prices

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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Number of Mercedes-Benz 300E services completed
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services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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Excellent Rating

(16)
Rating Summary
14
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14
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1

James

13 years of experience
233 reviews
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James
13 years of experience
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by Katy
Mercedes-Benz 300E L6-3.2L - Battery - San Francisco, California
Was given a "fixed price" for two services, one was completed but the other was not because the price for egr valve jumped significantly. In conversations with company reps I was not satisfied with their explanation of "fixed price" being only in regards to service charge as the website does not state that, it stated that there will be "no surprises, fixed price for services requested..." I feel there was false advertising. the battery was installed as part two of the service before being informed of the price hike so I wound up paying for that and not getting the main service completed. had the higher price been given initially I would not have booked the service at all.

Augie

32 years of experience
263 reviews
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Augie
32 years of experience
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by Kayvan
Mercedes-Benz 300E L6-2.8L - Valve Cover Gasket Replacement - Pasadena, California
On time and finished before the estimated time and very knowledgeable and honest mechanic , I had no stress and my car works perfectly . Highly recommended.

Terry

31 years of experience
223 reviews
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Terry
31 years of experience
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by Derek
Mercedes-Benz 300E L6-3.0L - Pre-purchase Car Inspection - Chandler, Arizona
Told me what was wrong with my car, end recommended a way to save a lot of money. Really appreciate it.

Whitney

40 years of experience
783 reviews
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Whitney
40 years of experience
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by juan
Mercedes-Benz 300E L6-3.0L - Alternator - Palo Alto, California
Great experience Will definitely consider using Whitney again

Excellent Rating

(16)
Rating Summary
14
1
0
0
1
14
1
0
0
1
Number of Mercedes-Benz 300E services completed
176+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

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