Honda is launching an unprecedented U.S. ad campaign urging owners to get vehicles repaired if they have been recalled to fix defective air bags. The Japanese automaker will spend several million dollars on ads in 120 newspapers and 30-second radio spots in 110 markets. It’s also sponsoring customized Facebook posts that will appear in owners’ timelines. The ads — in English and Spanish — will begin running next week. Honda has recalled about 6.2 million cars in the U.S. since 2008 because air bag inflators made by Takata Corp. can explode with too much force, sending shrapnel into the vehicle. Ten automakers, including Honda, have recalled about 22 million cars globally to replace Takata inflators. Six deaths have been blamed on the problem.