Removal and Installation: Removal

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

To avoid the risk of personal injury, do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to release built-up pressure. Carefully remove the radiator cap by turning it all the way.
Coolant is toxic and can be fatal if swallowed. Keep away from pets and children. If not reused, dispose of in accordance with local environmental regulations.

Partially drain the engine coolant. Refer to Changing Engine Coolant .
Remove the heater hose from the coolant plumbing fitting.
Remove the coolant plumbing fitting (1) from the front cover.

Courtesy of NISSAN NORTH AMERICA, INC.

CAUTION: Do not reuse O-ring.