Acura MDX Sport Hybrid 2020 Owner's Manual page 514

uuWhen DrivinguBlind spot information System
512
1Blind spot information System
For a proper blind spot information system operation:
•
Always keep the rear bumper corner area clean.
•
Do not cover the rear bumper corner area with
labels or stickers of any kind.
•
Take your vehicle to a dealer if you need the rear
bumper corner area or the radar sensors to be
repaired, or the rear bumper corner area is strongly
impacted.