Summary: On certain passenger vehicles, during production of the air bag, either the left or the right side curtain air bag inflation module may leak.

Consequence: In the event of a crash, the air bag may not inflate as designed increasing the risk of injury to a seat occupant.

Remedy: Dealers will replace the side curtain air bag free of charge. The recall is expected to begin on august 31, 2006. Owners may contact Audi at 1-800-822-2834.

Notes: Customers can also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safecar.gov.