This procedure covers the removal and replacement of the charcoal canister (EVAP canister) on a 2019-2024 Toyota RAV4 with the 2.5L I4 engine, which is located under the vehicle near the fuel tank.

Warnings

Tools required

Parts

• Charcoal canister assembly × 1 — 77740-42110 or equivalent
• EVAP hose clamps × 4 — Use OEM specification if damaged
• Vapor line O-rings × 2 — Use OEM specification

Preparation

1. Park vehicle on level ground and set parking brake
2. Allow engine and exhaust system to cool completely (at least 1 hour)
3. Disconnect negative battery terminal and wait 90 seconds
4. Raise vehicle and support securely on jack stands at manufacturer-specified lift points
5. Remove rear driver-side wheel for better access (optional but recommended)
6. Remove or fold back rear driver-side wheel well liner for access if wheel is removed

Procedure

1. 1

   Locate and access charcoal canister
   The charcoal canister is located under the vehicle, forward of the fuel tank on the driver's side. It is mounted to the frame rail with a mounting bracket. Use a shop light to identify the canister, which is a black cylindrical component with multiple vapor lines connected to it.
2. 2

   Label and photograph vapor line connections
   Before disconnecting anything, take clear photographs of all vapor line connections from multiple angles. Note the routing of each line. There are typically 3-4 lines connected: one from the fuel tank, one to the purge valve, one vent line, and possibly a drain line. Label each connection if possible.
3. 3

   Disconnect electrical connector
   Locate the electrical connector for the canister vent valve on top or side of the canister. Press the locking tab and pull the connector straight off. Ensure the connector is moved out of the work area to prevent damage.
   ℹ️Some models may not have an electrical connector if the vent valve is separate
4. 4

   Disconnect vapor lines from canister
   Using a pick tool or line disconnect tool, release the quick-connect fittings on each vapor line. Press the release tabs while pulling the line straight off. If lines use hose clamps, loosen them completely and slide them back before twisting and pulling the hoses off. Expect some fuel vapor smell. Place a drain pan underneath to catch any residual fuel if present.
   ⚠Do not pry or bend vapor lines as they are easily damaged
   Torque spec

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

   Inspect and cap open lines
   Inspect the condition of all vapor line ends and quick-connect fittings for damage or contamination. If lines will be exposed for more than a few minutes, plug them with clean shop rags or caps to prevent debris entry.
6. 6

   Remove canister mounting bracket bolts
   Locate the mounting bracket bolts securing the canister to the frame rail. There are typically two bolts. Using a 12mm socket, remove the mounting bracket bolts completely. Support the canister with one hand while removing the final bolt.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)
7. 7

   Remove charcoal canister assembly
   Lower the canister assembly carefully, ensuring all lines are disconnected. The canister and bracket typically come off as one unit. Maneuver it out from under the vehicle, being careful not to damage nearby brake lines or wiring.
8. 8

   Inspect mounting area and prepare new canister
   Clean the mounting area on the frame rail with a wire brush, removing any dirt, rust, or debris. Inspect the mounting bracket for damage and transfer it to the new canister if it's not included. Install new O-rings on any hard line fittings that require them, lubricating lightly with clean ATF.
9. 9

   Install new charcoal canister
   Position the new canister assembly into the mounting location, aligning the mounting bracket holes with the frame rail. Thread in both mounting bolts by hand first to ensure proper alignment, then torque to specification in a cross pattern.
   Torque spec

   Mounting Bolts27 Nm (20 lb-ft)
10. 10

    Reconnect vapor lines
    Reconnect each vapor line to the correct port on the canister, referencing your photographs and labels. Push quick-connect fittings straight on until they click and lock. For hose clamp connections, ensure hoses are fully seated before positioning clamps over the connection area and tightening to specification.
    ⚠Ensure each line is connected to the correct port to prevent EVAP system malfunction
    Torque spec

    Hose Clamps3 Nm (2 lb-ft)
11. 11

    Reconnect electrical connector
    Plug the electrical connector for the canister vent valve back onto the component, ensuring it clicks and locks fully into place. Verify the connector is secure by gently tugging on it.
12. 12

    Verify all connections
    Perform a final visual inspection of all vapor line connections, ensuring each is fully seated and secured. Verify no tools or parts were left in the work area. Check that no lines are kinked, stretched, or contacting sharp edges.

Reassembly

1. Reinstall wheel well liner if removed, securing all clips and fasteners
2. Reinstall wheel if removed and torque lug nuts to 103 Nm (76 lb-ft) in a star pattern
3. Lower vehicle to ground
4. Reconnect negative battery terminal
5. Ensure no tools or parts remain under vehicle

Verification

• Start the engine and allow it to reach normal operating temperature
• Check for fuel vapor odors around the canister area while engine is running
• Using a scan tool, check for EVAP system DTCs (P0440, P0441, P0455, P0456)
• Perform an EVAP system monitor drive cycle or use scan tool to command the vent valve and verify operation
• After first drive, re-inspect all connections under the vehicle for leaks or loose fittings
• Verify no check engine light appears after several drive cycles

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