Engine Coolant Level Inspection [MZI-3.7]

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Never remove the cooling system cap or loosen the radiator drain plug while the engine is running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot out and cause serious injury. It may also damage the engine and cooling system.
Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes.
When you are sure all the pressure is gone, turn the cap using the cloth, and remove it.

NOTE:

If the "FL22" mark is shown on or near the cooling system cap, use FL22 type engine coolant.
FL22 type engine coolant is shipped as a diluted solution. Use the solution as is when replacing coolant.

Fig 1: Identifying "FL22" Mark On Cooling System Cap
Courtesy of MAZDA MOTORS CORP.

Verify that the engine coolant level in the coolant reserve tank is between the F and L marks.
- If the engine coolant level is below the L mark, add engine coolant.
  
  Fig 2: Identifying Engine Coolant Level In Coolant Reserve Tank
  Courtesy of MAZDA MOTORS CORP.