2013-2022 Mazda CX-5 Control Arm Guide: Clunks, Bushing Failures, and Replacement

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

While there are no direct recalls for control arm failure on the CX-5, several technical service bulletins and common owner complaints point to the control arm bushings as a frequent source of suspension noise.

Front Lower Control Arm Bushing Issues

The most widely reported issue is the failure of the large rear bushing on the front lower control arm. Owners report cracking and tearing of this rubber bushing, sometimes at mileages as low as 30,000 to 50,000 miles. This failure is the primary cause of the common "clunking" noise associated with this vehicle. For the first-generation (2013-2016) CX-5, Mazda acknowledged a noise issue with TSB 02-002/18, which involved updated parts including a lower arm bushing with a new dry coating to reduce friction and creaking noises. 🎬 See this step-by-step guide for replacing first-generation front control arms. Owners of second-generation models (2017+) have noted that the control arm was redesigned, but premature bushing cracking can still occur.

Rear Suspension Noises & TSBs

Owners of 2013-2016 models, particularly those with AWD, have reported a knocking or clunking noise from the rear. TSBs have been issued for cracks in the rear differential mount bushing, which can produce a similar sound to a bad control arm. This was due to insufficient durability, and a redesigned cross member with an improved bushing was released to fix the problem.

Recalls

There have been no recalls issued for the suspension control arms themselves. A notable recall (NHTSA Campaign 16V644000) for 2013-2016 CX-5 models concerned corroding rear liftgate supports that could fail and cause the hatch to fall unexpectedly. This is unrelated to the suspension but is a safety item for owners to be aware of.

Symptoms of a Failing Control Arm

A bad control arm on a Mazda CX-5 typically announces itself with distinct noises and changes in steering feel. The failure is almost always due to worn-out rubber bushings or, in the case of the front lower arm, a failing integrated ball joint.

1. Clunking or Knocking Noises

This is the most common symptom. A metallic clunking or popping sound is often heard when driving over bumps, speed bumps, or uneven pavement. The noise comes from excessive movement in a worn bushing or ball joint, causing metal-on-metal contact. You may also hear it when braking or making sharp, low-speed turns.

2. Unstable Steering or "Wandering"

A worn control arm can cause the vehicle's alignment to shift dynamically. You might feel the steering wheel pull to one side, or you may need to make constant small corrections to keep the car driving straight. The steering may feel loose or less responsive, especially during turns.

3. Steering Wheel Vibration

As the bushings and ball joints wear, they can no longer effectively dampen road vibrations. This can lead to a shimmy or vibration felt in the steering wheel, especially at higher speeds. The vibration may change in intensity as you accelerate or decelerate.

4. Uneven Tire Wear

A bad control arm allows for unwanted movement of the wheel, which throws off the alignment. This typically results in premature and uneven tire wear, most often on the inner or outer edge of the tire tread. If you see this wear pattern, a bad control arm is a likely culprit.

Buying a Used Suspension Control Arm

A used OEM control arm can be an excellent value, often providing superior material quality and fit compared to new, low-cost aftermarket alternatives. However, a thorough inspection is critical because the condition of the bushings and ball joints is what matters most.

Physical Inspection Checklist:

• Inspect the Bushings: This is the most common failure point. Look for any cracks, dry rot, tearing, or separation in the rubber. The rubber should be firm and solid. If you can see significant gaps, the rubber is torn, or it looks "blown out," the arm is not a good purchase.
• Check the Ball Joint (Front Lower Arms): The front lower control arms have an integrated ball joint. The rubber boot protecting the joint must be intact with no rips or tears. Try to move the ball joint stud by hand; it should be stiff. Any looseness, wobble, or free play means the joint is worn out and the arm should be rejected.
• Check for Bends or Damage: Inspect the metal arm itself for any signs of bending, heavy corrosion, or impact damage. While the steel or aluminum arm is very strong, an arm from a vehicle in a major collision could be compromised.
• Mileage as an Indicator: Since bushing failure is common between 60,000 and 90,000 miles, try to source a used arm from a lower-mileage vehicle if possible. An arm with 40,000 miles on it has significantly more life left than one with 100,000 miles.

Replacement and Installation

Replacing a control arm is a feasible DIY job for an experienced home mechanic but can be challenging due to high torque bolts and the need to work safely under the vehicle.

Special Procedures & Torque Specs

The single most critical step during installation is to only tighten the pivot bolts for the bushings when the vehicle's full weight is on the suspension (i.e., at normal ride height). This is done by placing the jack under the knuckle to compress the suspension before torquing the bolts. Failure to do this will pre-load the rubber bushings, causing them to tear and fail in a very short amount of time.

Torque specs are critical for safety. While they vary slightly by year and position, common specs for the front lower control arm on first-generation (2013-2016) models are:

Always consult the specific service manual for your exact year and model before performing repairs.

Cost Comparison

Prices can vary significantly based on location, brand, and whether you do the work yourself. The following is an estimated breakdown for a single front lower control arm.

Frequently Asked Questions (FAQ)