The recall affects 318,000 Honda Odyssey minivans and 259,000 Pilot SUVs from the 2003 and 2004 model years. Also included are 230,000 Acura MDX SUVs from the 2003 through 2006.
Honda says a system that stops the key from being removed unless the vehicles are in park can wear out. Eventually drivers can pull out the key while the minivans and SUVs are still in gear, and they can roll off and crash.
Honda says it has received a small number of complaints about the problem, including two that caused minor injuries.
Dealers will fix the problem for free. Owners will get notices starting in February.