The ignition must be switched ON to use the wiper.
Rear Window Wiper

Turn the wiper on by turning the rear wiper/washer switch

Rear Window Washer
To spray washer fluid, turn the rear wiper/ washer switch to the position. After the switch is released, the washer will stop.
If the washer does not work, inspect the fluid level . If the fluid level is normal and the washer still does not work, consult an Authorized Mazda Dealer.
Windshield Washer
Rear Window DefoggerSeat Weight Sensor Inspection [Two Step Deployment Control System]
CAUTION:
If any of the following work is performed, perform the seat weight sensor
inspection using the M-MDS.
Removal of the passenger-side seat
Loosening and retightening of passenger’s seat fixing bolts
Or, the vehicle is involved in a collision
...
Back Up Light Switch Removal/Installation [A26 M R]
1. Disconnect the negative battery cable.
2. Disconnect the back-up light switch connector.
3. Remove the aerodynamic under cover No.2..
4. Remove the back-up light switch with the gasket.
5. Install a new gasket and the back-up light switch to the transaxle case.
Tightening torque ...
Parking Brake
CAUTION
Driving with the parking brake on
will cause excessive wear of the brake
parts.
NOTE
For parking in snow, refer to Winter Driving regarding parking
brake use.
Setting the parking brake
Depress the brake pedal and then firmly
pull the parking brake lever fully upwar ...