This procedure covers the removal and replacement of the lower radiator hose on a 2012-2017 Toyota Camry with the 2.5L I4 engine, including coolant draining and refilling.

Warnings

Tools required

Parts

• Lower radiator hose × 1 — 16572-0V010 or equivalent
• Hose clamps (if reusing original clamps is not possible) × 2 — Use OEM specification

Fluids

• Toyota Super Long Life Coolant (Pink) — 2.5 qt

Preparation

1. Ensure engine is completely cold to the touch
2. Park vehicle on level ground and engage parking brake
3. Place drain pan beneath radiator drain plug location
4. Remove engine splash shield if equipped for better access to drain plug

Procedure

1. 1

   Relieve cooling system pressure
   Slowly turn the radiator cap counterclockwise to the first stop and allow any residual pressure to escape. Once pressure is fully relieved, press down and turn the cap completely counterclockwise to remove it.
2. 2

   Drain coolant
   Locate the radiator drain plug on the driver side bottom corner of the radiator. Open the drain plug and allow coolant to drain into the drain pan. You do not need to drain the entire system, just enough to get the coolant level below the lower radiator hose connection point (approximately 2-3 quarts).
3. 3

   Access lower radiator hose connections
   The lower radiator hose connects to the radiator outlet on the driver side bottom of the radiator and to the water inlet housing on the engine block. Identify both connection points and clean away any debris around the hose clamps.
4. 4

   Remove radiator-side hose clamp
   Using a flathead screwdriver or hose clamp pliers, loosen the hose clamp at the radiator outlet connection. Slide the clamp back along the hose away from the connection point. Note the orientation and position of the clamp for reinstallation.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
5. 5

   Remove engine-side hose clamp
   Loosen the hose clamp at the water inlet housing connection on the engine block. Slide this clamp back along the hose as well. Be prepared for residual coolant to drain from the hose when disconnected.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
6. 6

   Remove lower radiator hose
   Twist the hose gently while pulling to break it free from both connection points. The hose may be stuck due to age and heat cycling. Work it back and forth carefully to avoid damaging the radiator outlet or water inlet housing. Remove the hose completely from the vehicle.
7. 7

   Clean connection surfaces
   Use a shop towel to clean the radiator outlet and water inlet housing connection surfaces. Remove any old rubber residue, corrosion, or debris. Inspect both metal connection points for damage, cracks, or excessive corrosion.
8. 8

   Install new lower radiator hose
   Position the new lower radiator hose with the appropriate end at each connection point. Ensure the hose routing matches the original path and does not contact any sharp edges or moving components. Push the hose firmly onto both the radiator outlet and water inlet housing until it seats completely against the bead on each fitting.
9. 9

   Install and tighten hose clamps
   Slide the hose clamps into position over each connection point, approximately 1/4 inch from the end of each hose. Position the clamp screw in an accessible location for future service. Tighten both hose clamps to specification using a torque wrench, or snug firmly by hand if torque wrench is not available. Do not over-tighten as this can damage the hose.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
10. 10

    Close radiator drain and refill coolant
    Close the radiator drain plug securely. Using a funnel, add Toyota Super Long Life Coolant (pink) through the radiator filler neck. Fill slowly to avoid air pockets. Fill to the base of the filler neck, then install the radiator cap.
11. 11

    Bleed cooling system
    Start the engine and allow it to reach normal operating temperature with the heater on maximum heat setting. Monitor the temperature gauge to ensure it stays in the normal range. Run the engine for approximately 10 minutes to allow air to purge from the system. Watch for any leaks at both hose connections.
12. 12

    Top off coolant and final check
    Allow the engine to cool completely. Remove the radiator cap and check coolant level. Top off as necessary to bring the level to the base of the filler neck. Also check the coolant reservoir and fill to the FULL line if needed. Reinstall the radiator cap securely.

Reassembly

1. Reinstall engine splash shield if it was removed
2. Double-check both hose clamp connections for tightness
3. Wipe down any coolant residue from engine components and radiator

Verification

• Visually inspect both hose connections for any signs of coolant seepage or drips
• Check coolant level in both the radiator and reservoir after the vehicle has been driven and cooled down
• Verify no coolant odor in the engine bay or visible steam during operation
• Confirm heater produces hot air indicating proper coolant circulation
• Monitor temperature gauge over the next several driving cycles to ensure normal operating temperature

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