1. Remove the battery cover..
2. Disconnect the negative battery cable.
3. Remove the battery component. (ex: battery, battery tray and PCM component).
4. Remove the aerodynamic under cover No.2..
5. Drain the oil from the transaxle..
6. Disconnect the back-up light switch connector and remove the back-up light switch.

7. Install the back-up light switch (with a new gasket) to the transaxle case.
20—29 N·m {2.1—2.9 kgf·m, 15—21 ft·lbf}
8. Install the battery component. (ex: battery, battery tray and PCM component)(See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)
9. Install the battery cover..
10. Add the specified amount and type of oil..
11. Install the aerodynamic under cover No.2..
Back Up Light Switch Removal/Installation [C66 M R]
Back Up Light Switch Removal/Installation [G66 M R]Stop Vehicle in Safe Place Immediately
If any of the following warning lights turns on, the system may have a
malfunction. Stop the
vehicle in a safe place immediately and contact an Authorized Mazda Dealer.
...
Headlight Aiming
CAUTION:
If the headlight aiming is adjusted with cargo in the vehicle, it may not
adjust correctly. Adjust the headlight aiming with the vehicle under the following
conditions:
No occupants inside vehicle
Cargo other than spare tire, jack, and tools not loaded
...
PCM Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the following items:.
Battery
PCM cover No.1
4. Disconnect the PCM connector..
5. Remove the battery tray and PCM component..
6. Remove in the order indicated in the table.
...