Coolant Replacement

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

Make sure the engine and radiator are cool to the touch.
Remove the radiator cap.
Remove the engine undercover (see step 2 under ENGINE OIL REPLACEMENT ).
Loosen the drain plug (A), and drain the coolant.

Fig 1: Identifying Drain Plug
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the drain bolt (A) from the rear side of the engine block.

Fig 2: Drain Bolt With Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.
After the coolant has drained, reinstall the drain bolt with a new washer (B).
Tighten the radiator drain plug securely.
Remove, drain, and reinstall the coolant reservoir.
Fill the coolant reservoir to the MAX mark (A) with genuine Honda Long Life Antifreeze/Coolant Type 2 (P/N OL999-9011).

Fig 3: Identifying Coolant Reservoir Level (MAX Mark And MIN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Pour genuine Honda Long Life Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck.
NOTE:
- Always use genuine Honda Long Life Antifreeze/Coolant Type 2 (P/N OL999-9011). Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail.
- Genuine Honda Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Do not add water.
Engine Coolant Capacities (Including the coolant reservoir capacity of 0.44 L (0.116 US gal)):

At Coolant Change: 4.55 L (1.202 US gal) After Engine Overhaul: 5.04 L (1.332 US gal)

Fig 4: Filling Engine Coolant
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Loosely install the radiator cap.
Start the engine, and let it run until it warms up (the radiator fan comes on at least twice).
Turn off the engine. Check the level in the radiator and add genuine Honda Long Life Antifreeze/Coolant Type 2, if needed.
Put the radiator cap on securely, then start the engine again, and check for leaks.
Clean up any spilled engine coolant.
If the Maintenance Minder required engine coolant replacement, reset the Maintenance Minder (see MAINTENANCE REMINDER LIGHT RESET PROCEDURES ), and this procedure is complete. If the Maintenance Minder did not require engine coolant replacement, go to next step.
Turn the ignition switch to LOCK (0).
Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see GENERAL TROUBLESHOOTING INFORMATION ).
Turn the ignition switch to ON (II).
Make sure the HDS communicates with the vehicle and powertrain control module (PCM). If it does not communicate, troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).
Select GAUGE in the BODY ELECTRICAL with the HDS.
Select ADJUSTMENT in the GAUGES with the HDS.
Select MAINTENANCE MINDER in the ADJUSTMENT with the HDS.
Select RESET in the MAINTENANCE MINDER with the HDS.
Select MAINTENANCE SUB ITEM 5 RESET with the HDS.
Install the engine undercover (see step 5 under COOLANT REPLACEMENT ).