Porsche Cayenne Rear Axle Lock Nut May Break

NHTSA campaign 21V271000 · Reported Apr 21, 2021 · Porsche Cars North America, Inc.

high How serious is it? About this label

A broken lock nut can cause the rear axle to become misaligned, which can lead to a loss of control and increase the risk of a crash. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	21V271000
Reported to NHTSA	Apr 21, 2021
Manufacturer	Porsche Cars North America, Inc.
Part affected	Suspension:rear:axle:non-Powered Axle Assembly
Vehicles covered	1 model/year combination, model years 2021
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

On certain 2021 Porsche Cayenne models, the lock nut on the rear axle's trailing arm may break due to corrosion.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your vehicle is affected.
2. Contact a Porsche dealer or Porsche customer service at 1-800-767-7243.
3. The repair is free.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 21V271000. More in how recalls work.

Affected vehicles (1)

2021 Porsche Cayenne

Who to contact

Porsche — official Porsche recall lookup

Customer service: 1-800-767-7243

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Porsche Suspension Recalls Involving Loose Fasteners and Control Arms · all 13 Porsche recalls in this area

Other Porsche Cayenne recalls

Dec 19, 2025Porsche Cayenne, Panamera and Taycan Rearview Camera Failuremedium
Sep 23, 2025Porsche Cayenne and Panamera fuel pump bolts may leak fuelcritical
Jul 16, 2024Porsche Cayenne Control Arm Crack Riskcritical
Jul 27, 2023Porsche Cayenne Rear Hazard and Parking Lights May Failhigh
Jan 28, 2022Porsche Cayenne Rear Axle Alignment Missedlow
Jun 30, 2021Porsche Cayenne Steering Column May Detachhigh

All 15 Cayenne recalls

Official notice

Component: SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY
Summary: Porsche Cars North America, Inc. (Porsche) is recalling certain 2021 Cayenne, Cayenne S, Cayenne Turbo, Cayenne GTS, Cayenne Coupe, Cayenne S Coupe, Cayenne Turbo Coupe, and Cayenne GTS Coupe vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.
Safety risk: A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
Remedy: Porsche will notify owners, and dealers will replace the lock nuts, free of charge. The recall began on June 18, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMA9.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.