2015 Jeep Wrangler air bag recall letter sent, how can I get a duplicate?

What is your question?

My son lives in Great Bend, Kansas and owns a 2015 Jeep wrangler, right had drive, and received a letter for the air bag recall. He can't find the letter so how can I get a duplicate? The dealer told him they can't fix the air bag without the recall letter. I am asking how I can get a duplicate letter for the air bag recall? Wyatt

What makes this problem better or worse?

2015 Jeep Wrangler air bag recall letter

How long has your 2015 Jeep Wrangler had this problem?

I am looking for a recall letter.