Acura RDX 2019–2020: broken rear glass, impact and defroster grid

Possible cause and initial examination

The bulletin identifies an incorrectly specified defroster grid as a possible cause. It checks front/rear bumpers, tailgate, rear wiper and tailgate alignment/operation. Its glass-replacement branch follows absence of those damage/alignment signs.

American Honda / NHTSA technical communications repository: Acura Service Bulletin 22-014: Rear Windshield Glass Shattering, Version1

When the tailgate is also damaged

With visible tailgate contact, document metal skin, gaps, wiper mounts and accessible frame. None alone measures internal glass stress. Defroster caused it without excluding external impact exceeds the bulletin.

Editorial inspection order.

Full material about the model

When the no-external-impact glass bulletin applies and why tailgate condition needs a separate check.