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:

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.
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.

Drain engine coolant. Refer to Changing Engine Coolant .
Remove radiator hose (lower) from the water inlet connection.
Remove the coolant return line from the water inlet connection.
Disconnect the harness connector (if equipped) from the coolant heater.
Remove bolt (A) securing water inlet bracket.

Courtesy of NISSAN NORTH AMERICA, INC.

(3)

: Coolant heater
Remove the bolt (B) securing the water inlet (2) to the front cover.
Remove the water inlet (2) connection.
WARNING: Do not reuse O-ring (1).
Remove coolant heater from water inlet connection (if necessary).