1. Disconnect the negative battery cable..
2. Remove the car-navigation unit. (with car-navigation system).
3. Insert your hand from the lower side of the lower panel (without car-navigation system) or the area where the car-navigation unit was installed (with car-navigation system), press the switch panel in the direction of the arrow (1) shown in the figure and remove it while detaching hook A and B and hook C.

4. Disconnect the cluster switch connector.
5. Remove the cluster switch in the direction of the arrow (3) while detaching hooks D in the direction of the arrow (2).

6. Install in the reverse order of removal.
Side Wall Removal/Installation
Upper Panel Removal/InstallationOil Pressure Switch Inspection
1. Switch the ignition ON (engine off) and verify that the oil pressure warning
light is illuminated.
2. Start the engine and verify that the oil pressure warning light turns off.
If the oil pressure warning light is not illuminated or remains illuminated,
inspect the wiring harness ...
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.
...
Headliner
Purpose/Function
The headliner is equipped with a shock absorbing pad for driver's head protection
during a collision.
Construction
The front and rear side of the headliner is equipped with a shock absorbing
pad with a plastic rib-pad structure.
...