1. Disconnect the negative battery cable..
2. Remove the lens..
3. Insert a tape-wrapped fastener remover to the position shown in the figure, release the tabs.

4. Pull the rear bumper in the direction of the arrow (1) in the figure, and pull out the license plate lights in the direction of the arrow (2).

5. Pull out the wiring harness in the direction of the arrow and set it aside from the hook.

6. Remove the license plate light.
7. Install in the reverse order of removal.
License Plate Light Bulb Removal/Installation
PID/Data Monitor Inspection [Afs (Adaptive Front Lighting System)]Sunlight/Temperature Sensor
The climate control system measures
inside and outside temperatures, and
sunlight. It then sets temperatures inside
the passenger compartment accordingly.
CAUTION
Do not obstruct either sensor,
otherwise the climate control system
will not operate properly.
...
Warranties for Your Mazda
New Vehicle Limited Warranty
Powertrain Limited Warranty
Safety Restraint System Limited Warranty
Anti-perforation Limited Warranty
Federal Emission Control Warranty/California Emission Control Warranty
Emission Defect Warranty
Emission Performance Warranty
Emission Control ...
Seat Warmer Unit Inspection
WARNING:
Handling a front seat (with built-in side air bag) improperly can accidentally
operate (deploy) the air bag, which may seriously injure you. Read the service
warnings before handling a front seat (with built-in side air bag)..
CAUTION:
After removing a front seat ...