Porsche North America, Inc. (Porsche) will be contacting the owners of certain 2021 Cayenne vehicles because of a problem affecting the rear axle suspension. The Porsche models affected include 2021 Cayenne, Cayenne S, Cayenne Turbo, Cayenne GTS, Cayenne Coupe, Cayenne S Coupe, Cayenne Turbo Coupe, and Cayenne GTS Coupe.

According to the defect report, lock nuts on the trailing arm of the rear axle have not been manufactured according to specifications. The problem could cause a loose thread connection that may allow respective suspension components to move beyond the intended position. If the screw connection fails, the driver could experience a sudden loss of driving stability with a significant change to driving behavior and a loss of vehicle control. Drivers may notice noises and vibrations due to the loosening of the connection, but these warning sings are not guaranteed.

Porsche will instruct owners of affected vehicles to return to their dealers to have the lock nuts replaced. The recall is expected to begin June 2021. Porsche’s number for this recall is AMA9 and the NHTSA campaign number is 21V-271.