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Campaign 21V271 Posted April 21, 2021 1,568 units

2021 Porsche Cayenne Recall 21V271: Rear Axle Lock Nut

RN
Reviewed by the RecallNotify editorial team
Published May 24, 2026

Recall 21V271 affects 1,568 2021 Porsche Cayenne vehicles for rear-axle lock nuts that can break. Repair is free at any franchised Porsche dealer.

Porsche is recalling 1,568 2021 Cayenne vehicles because the lock nut on the rear axle trailing arm can break from stress corrosion. A broken lock nut can misalign the rear axle, cause loss of control, and increase crash risk; Porsche dealers will replace the affected lock nuts free of charge.

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What's wrong?

The rear trailing arm on a 2021 Porsche Cayenne is a suspension link that helps hold the rear wheel in the correct position as the wheel moves over the road. The lock nut on the eccentric screw keeps that rear axle adjustment point clamped in place, so the suspension geometry stays where Porsche set it.

On affected Cayenne vehicles, certain lock nuts came from production lots with material properties outside specification, including hardness and boron and chromium content. That material issue can lead to hydrogen induced stress corrosion, which means the nut cracks while it is under load. If the nut breaks, the trailing arm connection can loosen or fail.

There is no dependable warning sign before failure. Noise or vibration from the rear axle connection can happen as it loosens, but Porsche says driver perception of those signs is not guaranteed.

Who's affected?

2021 Porsche Cayenne rear suspension
Units affected1,568
Field incidentsNHTSA has logged no field incidents to date.

Not every 2021 Porsche Cayenne SUV is on the list. Check your VIN to confirm whether your specific SUV is included.

What's the safety risk?

A broken lock nut can misalign the rear axle, causing loss of control and increasing crash risk. Noise or vibration is not a reliable warning sign before the connection loosens or fails. Schedule the repair soon, and stop driving if the vehicle feels unstable. Repair is free at any franchised Porsche dealer.

What should I do?

  1. Check your VIN to confirm your 2021 Porsche Cayenne is included in this recall.
  2. Contact a franchised Porsche dealer to schedule the free rear-axle lock-nut replacement that keeps the trailing arm secured and the rear axle aligned.
  3. Bring the recall notice if Porsche mailed one. If not, reference recall number 21V271 and Porsche recall AMA9 when you call.
  4. Drive cautiously until the lock-nut replacement is complete. Leave extra following distance and avoid abrupt steering inputs.

What happens at the repair

At the dealer, a Porsche technician replaces the rear axle trailing arm lock nuts covered by the recall. Parts and labor are free under campaign 21V271, and the repair is available now. The replacement addresses lock nuts that can break from stress corrosion on the rear axle trailing arm. Porsche has a general reimbursement plan on file for owners who already paid for a related repair before the recall notice. If you have prior repair paperwork, ask the Porsche service desk or Porsche customer service how to submit documentation under that plan.

ReimbursementReimbursement available

Timeline

April 21, 2021 NHTSA published the recall
June 18, 2021 Dealer notification began
June 18, 2021 Dealer notification ended
June 18, 2021 Owner notification mailed
June 18, 2021 Interim owner notification (was planned for this date)

Frequently asked questions

What is recall 21V271?

Recall 21V271 covers 1,568 2021 Porsche Cayenne vehicles with rear-axle trailing-arm lock nuts that can break from stress corrosion. A broken lock nut can misalign the rear axle and cause loss of control. Porsche dealers will replace the lock nuts for free.

What should I do if my 2021 Porsche Cayenne is on this recall?

Check your VIN to confirm your specific Cayenne is included in recall 21V271. If it is, contact a franchised Porsche dealer to schedule the rear-axle lock-nut replacement. Reference recall number 21V271 or Porsche recall AMA9 when you call.

Is the recall repair free?

Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Porsche dealers will replace the affected rear-axle lock nuts free of charge, regardless of where you bought the vehicle.

What is the safety risk in recall 21V271?

The safety risk is loss of vehicle control. In recall 21V271, a broken rear-axle trailing-arm lock nut can misalign the rear axle, which increases crash risk. The fix is to have a Porsche dealer replace the lock nuts for free.

When did the Porsche Cayenne recall repair begin?

The recall repair began on June 18, 2021. Porsche dealers replace the rear-axle lock nuts free of charge. For scheduling help, contact a franchised Porsche dealer or Porsche customer service at 1-800-767-7243 and reference recall AMA9.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/21V271000
Porsche customer service1-800-767-7243
NHTSA recall #21V271
NHTSA recall # (full)21V271000

Source documents

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →