The radar sensors (rear) for the rear vehicle monitoring system are equipped inside the rear bumper, one each on the left and right sides.
Sedan

Hatchback

The surface area of the rear bumper near the radar sensors (rear) should always be clean so that the rear vehicle monitoring system operates correctly. Do not apply stickers or similar objects to the rear bumper.
Refer to Exterior Care on .
NOTE Consult an Authorized Mazda Dealer for radar sensors (rear) repairs and replacement, or repair, replacement or painting of the rear bumper near a radar sensors (rear).
Laser Sensor (Front)
Cruise ControlDriver Side Air Bag Module Removal/Installation [Standard Deployment Control
System]
WARNING:
Handling the air bag module improperly can accidentally deploy the air bag
module, which may seriously injure you. Read the air bag system service warnings
and cautions before handling the air bag module..
1. Switch the ignition to off.
2. Disconnect the negative batte ...
B Pillar Upper Trim Removal/Installation
1. Remove the following parts:
a. Adjuster anchor cover.
b. Upper anchor installation bolts on the front seat belt.
c. Front scuff plate.
d. Rear scuff plate.
2. Partially peel back the seaming welt.
3. Remove the B-pillar lower trim..
4. Grasp the lower end of the B-pillar upper trim, ...
Contact Authorized Mazda Dealer and Have Vehicle Inspected
If any of the following warning lights or the indicator light turns on/flashes, the system may
have a malfunction. Contact an Authorized Mazda Dealer to have your vehicle
inspected.
...