MOTOR COOLANT CHANGE


caution Do not operate the electric water pump when the coolant level in the radiator condenser tank is lower than the "LOW" line. If the electric water pump is operated, the electric water pump bearing may sustain damage, resulting in a electric water pump breakdown or service life reduction.

MOTOR COOLANT DRAINING


1.
warning Be very careful because the coolant may be very hot.
Remove the EV radiator condenser tank cap.

2.Remove the EV radiator drain plug, and drain the motor coolant.
3.Tighten the EV radiator drain plug to the specified torque.
Tightening torque: 2.0 N·m

MOTOR COOLANT REFILLING


1.
caution Use the Mitsubishi genuine Mitsubishi Motors Genuine Super Long Life Coolant Premium without adding water because the concentration is preadjusted to 50%.
Prepare the required volume of coolant using a jug so as to avoid running out of motor coolant during the refilling and causing any damage to the electric water pump.

    Recommended antifreeze: MITSUBISHI MOTORS GENUINE SUPER LONG LIFE COOLANT PREMIUM
    Quantity: 6.5 L
2.Remove the EV radiator condenser tank cap.
3.Fill the motor coolant up to the radiator condenser tank filler port.
4.According to either of the procedures below, start the "Coolant refilling control".
(1) Not using M.U.T.-III
.....1. Pull the parking brake lever.
.....2. Turn the power supply mode of the electric motor switch to ON.
.....3. Press the ECO mode switch 10 times or more within seven seconds.
(2) When using M.U.T.-III
.....1. Turn off the power supply mode of the electric motor switch. Then connect the M.U.T.-III to the diagnosis connector.
.....2. Turn the power supply mode of the electric motor switch to ON.
.....3. From the system selection screen of M.U.T.-III, select "PHEV-ECU".
.....4. From the PHEV-ECU screen, select "Special Function-test".
.....5. Select the item No. 2 "Water pump actuate".
5.There will be a wait time of 20 seconds after the start of "Coolant refilling control" until the actuation of electric water pump. During this period, hold the prepared jug, and insert the jug tip into the EV radiator condenser tank filler port to be ready to fill the motor coolant.
6.After the 20-second wait time, the electric water pump repeats the operation (4 seconds) and stop (15 seconds). So, refill the motor coolant with an amount decreased by the electric water pump operation.
note
  • In a case if the prepared coolant becomes about to run out, turn off the power supply mode of the electric motor switch beforehand, and stop the "Coolant refilling control" (at this time, perform the work with two people).
  • Including the wait time, "Coolant refilling control" will be completed within ten minutes from the start (during this period, 31 times of 4-second operation are included).
    If the motor coolant change is not completed, or if the control is stopped during the work, the refilling can be resumed by starting "Coolant refilling control" once again.
7.Until the motor coolant level stops decreasing by the electric water pump operation, repeat the step 6 above.
note The motor coolant refilling will be complete in about 3 to 4 minutes.
8.For the air bleeding of the EV cooling system, operate the electric water pump for at least one minute according to either of the procedures below.
(1) Not using M.U.T.-III
.....1. Operate the electric motor switch with the brake pedal depressed.
.....2. Turn on the power supply mode of the electric motor switch to make the READY (ready to drive) indicator illuminate for at least one minute.
note The electric water pump will run as long as the READY (ready to drive) indicator illuminates.
If the READY (ready to drive) indicator continues to illuminate for at least one minute, the electric water pump has been activated for at least one minute.
(2) When using M.U.T.-III
.....1. Turn off the power supply mode of the electric motor switch. Then connect the M.U.T.-III to the diagnosis connector.
.....2. Turn the power supply mode of the electric motor switch to ON.
.....3. Make the READY (ready to drive) indicator illuminate.
.....4. From the system selection screen of M.U.T.-III, select "PHEV-ECU".
.....5. From the PHEV-ECU screen, select "Special Function-test".
.....6. Select the item No. 2 "Water pump actuate".
9.Turn off the power supply mode of the electric motor switch to deactivate the electric water pump.

10.When the motor coolant level in EV radiator condenser tank is at the "LOW" line or higher, the air bleeding is complete.
11.If the motor coolant level in EV radiator condenser tank is at the "LOW" or lower, fill the motor coolant to the "FULL" line, and then perform the air bleeding of above step 8 again.
12.Adjust the coolant level so that the motor coolant level in EV radiator condenser tank comes to near the "FULL" line when the electric water pump is stopped.
13.Tighten the EV radiator condenser tank cap securely.