Coolant Reservoir - Hybrid Drive: Service and Repair

Removal

1. Loosen the drain plug (A), and drain the inverter coolant. Remove the inverter reservoir cap to help drain the coolant faster.




2. Disconnect the reservoir inlet hose (A) and outlet hose and pipe assembly (B), then remove the reservoir (C).

Tightening torque:
3.9 - 5.9N.m (0.4 - 0.6kgf.m, 2.9 - 4.3lb-ft)




3. Installation is the reverse of removal.
4. Fill the reservoir with coolant and check for leaks.

NOTE:
Bleed air from the hybrid motor cooling system using GDS.

Inspection

Inverter Reservoir Cap Testing
1. Remove the inverter reservoir cap, wet its seal with coolant, and then install it on a pressure tester.




2. Apply a pressure of 93.16 - 122.58kPa (0.95 - 1.25kgf/cm2, 13.51 - 17.78psi).
3. Check for a drop in pressure.
4. If the pressure drops, replace the cap.

Radiator Leakage Test
1. Wait until engine is cool, then carefully remove the inverter reservoir cap and fill the reservoir with coolant, then install it on the pressure tester.
2. Apply a pressure tester to the reservoir and apply a pressure of 93.16 - 122.58kPa (0.95 - 1.25kgf/cm2, 13.51 - 17.78psi).




3. Inspect for inverter coolant leaks and a drop in pressure.
4. Remove the tester and reinstall the inverter reservoir cap.