1. Disconnect the negative battery cable..
2. Remove the liftgate upper trim..
3. Remove the rear spoiler..
4. Disconnect the connector.

5. While pressing the high-mount brake light tab in the direction of arrow (1) shown in the figure, press the high-mount brake light in the direction of arrow (2) to detach the high-mount brake light and liftgate.

6. Detach all the high-mount brake light tabs and liftgate and remove the high-mount brake light from the liftgate.

CAUTION:
If the high-mount brake light is removed from the liftgate, the high-mount brake light may fall off and be damaged. When removing the high-mount brake light from the liftgate, hold the high-mount brake light on the lens side with a hand during servicing.
7. Install in the reverse order of removal.
High Mount Brake Light
License Plate LightPurge Solenoid Valve
Purpose, Function
Introduces evaporative gas absorbed by the charcoal canister to the intake
manifold.
The purge solenoid valve opens according to the control signal from the PCM.
Construction
The purge solenoid valve is installed in the engine compartment.
...
Fuel Distributor [Skyactiv G 2.0]
Purpose, Function
Distributes fuel pumped from the high pressure fuel pump to each fuel injector.
Construction
The fuel distributor is installed to the cylinder head.
The fuel distributor is integrated with the fuel pressure sensor.
...
Positive Crankcase Ventilation (PCV) Valve
Purpose, Function
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
The PCV valve is open/closed by the intake manifold vacuum.
Construction
The PCV valve is installed to the oil separator.
The PCV valve consists of a spring and valve.
...