How to Replace Coolant Reservoir 01-05 Honda Civic (Except Hatchback)
Difficulty: Beginner · About 45 min · Honda Civic
Replace the coolant overflow reservoir on a 2001–2005 Honda Civic sedan or coupe by disconnecting the battery, transferring the hose, and securing the bottle.
Tools you will need
- 10mm wrench and socket
- Ratchet
- Needle nose pliers
Parts and supplies
- Coolant overflow reservoir
Steps
Disconnect and remove the battery
Switch off the ignition and disconnect the negative battery cable first, then the positive cable. Remove the battery hold-down and cover and lift the battery out safely.
Remove the old reservoir
Remove the reservoir mounting bolt and release its hose clips. Disconnect the hose from the bottle and move it clear of the engine bay.
Install the replacement reservoir
Connect the hose and secure its retainer on the new bottle. Lower the reservoir into position and reinstall its mounting bolt.
Reinstall the battery
Place the battery in its tray, refit the cover and hold-down, and secure the mounting hardware. Reconnect the positive cable first and the negative cable last.
Check coolant level
With the engine completely cool, fill the reservoir to the indicated range using the correct coolant mixture. Inspect the hose and bottle for leaks.
Check your vehicle’s repair manual for exact specifications and fit.