Draining Engine Coolant

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

WARNING:

Do not remove radiator cap and reservoir tank cap when engine is hot. Serious burns could occur from high-pressure engine coolant escaping from radiator.
Wrap a thick cloth around the caps. Slowly turn them a quarter of a turn to release built-up pressure. Carefully remove the caps by turning it all the way.

Open radiator drain plug at the bottom of radiator and then remove radiator cap and reservoir tank cap. (This is the only step required when partially draining the cooling system.)
CAUTION:
- Do not allow coolant to contact drive belt.
- Perform this step when engine is cold.
Follow this step for heater core removal/replacement only. Disconnect the upper heater hose at the engine side and apply moderate air pressure [103.46 kPa (1.055 kg/cm ² , 15 psi) maximum air pressure] into the hose for 30 seconds to blow the excess coolant out of the heater core.
When draining all of the coolant in the system, remove reservoir tank and drain engine coolant and clean reservoir tank before installing.
NOTE: When draining all of the engine coolant in the system, open water drain plug on cylinder block. Refer to Exploded View .
Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to Changing Engine Coolant .