Water-Cooled Charge Air Cooler Coolant Replacement (VIN Y)

WARNING: This page is about a different variant/trim than selected.

WARNING:

If the cooling system cap or the water-cooled charge air cooler reserve tank cap is removed when the engine is hot, steam and boiling water may be injected, causing severe burns or severe injury. Perform the removal of the cooling system cap and water-cooled charge air cooler reserve tank cap when the engine is cool.
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 to the first stop. Step back while the pressure escapes.
When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and remove it.

CAUTION:

Use engine coolant at a concentration that meets the environmental conditions in which the vehicle is driven, otherwise engine damage could occur.
The engine has aluminum parts and must be protected by an ethylene-glycol-based coolant to prevent corrosion and freezing.
Do not use coolants containing Alcohol, Methanol, Borate or Silicate. These coolants could damage the cooling system.
Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will cut down on the coolant's effectiveness.
Engine coolant damages paint. If engine coolant does get on a painted surface, rinse it off quickly.

NOTE:

For vehicles with an "FL22" mark on or near the water-cooled charge air cooler reserve tank cap, use genuine long-life coolant (golden).

Courtesy of MAZDA MOTORS CORP.

Because genuine long-life coolant (golden) is diluted, use it as it is when replacing the coolant. Also when adding, use it as it is.

Water-cooled charge air cooler coolant capacity (approx. quantity)

1.6 L {1.7 US qt, 1.4 Imp qt}

Remove the water-cooled charge air cooler reserve tank cap.
Remove front under cover No. 1. (See FRONT UNDER COVER No. 1 REMOVAL/INSTALLATION .)
Disconnect the water hose and drain the water-cooled charge air cooler coolant.

Courtesy of MAZDA MOTORS CORP.
After draining the water-cooled charge air cooler coolant completely, connect the water hose.
NOTE:
- Maintain the end of the water-cooled charge air cooler service hose at the position higher than the LOW mark of the water-cooled charge air cooler reserve tank.
Disconnect the water-cooled charge air cooler service hose from the attachment area and remove the plug from the water-cooled charge air cooler service hose.

Courtesy of MAZDA MOTORS CORP.
Add water-cooled charge air cooler coolant until it reaches above the LOW mark of the water-cooled charge air cooler reserve tank.

Courtesy of MAZDA MOTORS CORP.
Plug the water-cooled charge air cooler service hose and secure it to the attachment area.
CAUTION:
- Before starting the engine, add water-cooled charge air cooler coolant. Otherwise, the electric water pump could be damaged.
Idle the engine and inspect the water-cooled charge air cooler coolant level.
- If the water-cooled charge air cooler coolant level is low, repeat Steps 6 to 9.
Stop the engine.
Install the water-cooled charge air cooler reserve tank cap.
Inspect each area for water leakage. (See WATER-COOLED CHARGE AIR COOLER COOLANT LEAKAGE INSPECTION (VIN Y) .)
Install front under cover No. 1. (See FRONT UNDER COVER No. 1 REMOVAL/INSTALLATION .)
Install the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION (VIN Y) .)