COOLANT RESERVE TANK REMOVAL/INSTALLATION

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Warning
•  The EV system is hot immediately after driving and charging, and can cause severe burns. Turn off the EV system and wait until it is cool before performing the servicing.
•  If the cooling system cap is removed while the EV system is hot, hot coolant may be ejected, causing severe burns or injury. Perform the removal of the cooling system cap when the EV system is cool.
•  When removing the cooling system cap, cover the cooling system cap with a clean cloth and remove it slowly.
•  The cooling fan may suddenly start operating regardless of the main power switch position. Keep hands and tools away from the cooling fan even if the cooling fan is not operating to prevent injury, or damage to the cooling fan. When servicing the cooling fan or parts near the cooling fan, ensure the following.
―  Do not perform normal charging or quick charging
―  Do not select high voltage battery cooling on center display after EV system stops
―  Do not open/close doors frequently with main power switched OFF
―  Access connected vehicle maintenance mode (MyMazda App connected vehicle)
―  Cancel climate control timer
―  Operate center display and turn off battery heater operation

Coolant draining procedure

Replacement part

Gasket
 
Quantity: 2
 
Location of use: Drain plug
Clip
 
Quantity: 3
 
Location of use: Insulator

1.  Load the vehicle on the auto lift so that it can be lifted up.

2.  Remove the seal cover. (See SEAL COVER REMOVAL/INSTALLATION.)

3.  Remove the cooling system cap.

4.  Remove front under cover No.2. (See FRONT UNDER COVER No.2 REMOVAL/INSTALLATION.)

5.  Implement [Coolant Draining Procedure] for the coolant replacement. (See COOLANT REPLACEMENT.)


COOLANT RESERVE TANK REMOVAL/INSTALLATION

1.  Remove using the procedure shown in the figure.

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1
Water hose (DC-DC converter side)
(See Water Hose (DC-DC Converter Side) Installation Note.)
2
Nut
3
Upper radiator hose
(See Upper Radiator Hose Installation Note.)
4
Coolant reserve tank

2.  Install in the reverse order of removal.


Coolant Replenishment Procedure

•   Implement [Coolant Replenishment Procedure] for the coolant replacement. (See COOLANT REPLACEMENT)

Air Bleeding Procedure

1.   Implement [Air Bleeding Procedure] for the coolant replacement. (See COOLANT REPLACEMENT)

2.  Inspect each area for coolant leakage. (See COOLANT LEAKAGE INSPECTION.)

3.  Install the insulator.

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4.  Install front under cover No.2. (See FRONT UNDER COVER No.2 REMOVAL/INSTALLATION.)

5.  Lower the vehicle to the ground and adjust the coolant amount to the F line on the coolant reserve tank.

6.  Install the seal cover. (See SEAL COVER REMOVAL/INSTALLATION.)


Upper Radiator Hose Installation Note

1.  Align the marking on the upper radiator hose to the protrusion on the coolant reserve tank as shown in the figure.

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Water Hose (DC-DC Converter Side) Installation Note

1.  Align the marking on the water hose (DC-DC converter side) with the protrusion on the coolant reserve tank as shown in the figure.

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