Washer Reservoir

This procedure covers the removal and replacement of the windshield washer reservoir on a 2025 Rivian EDV 500 commercial delivery van.

Warnings

Tools required

Parts

• Windshield washer reservoir × 1 — Use OEM specification
• Washer reservoir mounting grommets × 3 — Use OEM specification
• Quick-connect hose fittings × 2 — Use OEM specification
• Washer pump seal/gasket × 1 — Use OEM specification

Fluids

• Windshield Washer Fluid — 3.5 qt

Preparation

1. Park vehicle on level surface and apply parking brake
2. Place wheel chocks behind rear wheels
3. Ensure 12V battery is in good condition (do not disconnect as this may cause system faults)
4. Turn vehicle power off and remove key card from proximity
5. Allow vehicle to sit for 2 minutes to ensure all systems are in sleep mode
6. Put on safety glasses and nitrile gloves

Procedure

1. 1

   Raise vehicle and remove driver front wheel
   Loosen the driver front wheel lug nuts while vehicle is on ground. Raise the front of the vehicle using a floor jack at the designated front jacking point. Secure with jack stands under the frame rails. Remove the wheel lug nuts completely and remove the wheel.
2. 2

   Remove front inner fender liner
   Locate the plastic inner fender liner clips and fasteners. Remove the T25 Torx screws along the front edge of the liner (approximately 6 screws). Use trim panel removal tools to carefully release the push-pin clips securing the liner to the wheel well (approximately 8-10 clips). Fold the liner back to expose the washer reservoir area. You may need to fully remove the rear portion of the liner for better access.
3. 3

   Drain washer fluid
   Place a drain pan beneath the washer reservoir. Locate the washer fluid hose connection at the bottom or side of the reservoir. Squeeze the quick-connect fitting tabs and carefully pull the hose off the reservoir nipple. Allow all fluid to drain into the pan. If fluid does not drain easily, you may need to disconnect the filler neck hose at the top to allow air in.
4. 4

   Disconnect electrical connector from washer pump
   Locate the washer pump mounted to the bottom of the reservoir. Identify the electrical connector on the pump motor. Press the locking tab on the connector and pull it straight off the pump. On EDV models, there may be two pumps (front and rear washer systems) - disconnect both if present.
5. 5

   Disconnect washer hoses
   Trace the washer fluid supply hose(s) from the pump to where they route toward the hood/windshield area. Squeeze the quick-connect fitting tabs and disconnect each hose from the pump outlet(s). Also disconnect the filler neck hose from the top of the reservoir if not already done. Note the routing of hoses for reinstallation.
6. 6

   Remove reservoir mounting fasteners
   Locate the reservoir mounting points. The EDV 500 typically uses three mounting points: two upper 10mm bolts or nuts, and one lower 8mm bolt. Remove these fasteners while supporting the reservoir with your other hand. The reservoir may also be secured with rubber grommets that friction-fit into body brackets.
7. 7

   Remove washer reservoir from vehicle
   With all fasteners removed, carefully maneuver the reservoir down and out through the wheel well opening. You may need to tilt or rotate the reservoir to clear frame members and other components. Be careful not to damage the reservoir neck or pump mounting points during removal.
8. 8

   Transfer washer pump(s) to new reservoir
   If replacing the reservoir, remove the washer pump(s) from the old reservoir. The pump typically twists counterclockwise and pulls out, or may be secured with a locking ring. Install the pump(s) into the new reservoir, ensuring the seal or grommet is properly seated. Twist clockwise to lock in place. Verify the pump sits flush and secure.
9. 9

   Install new reservoir into vehicle
   Maneuver the new reservoir up into position through the wheel well opening. Align the mounting points with the body brackets. If equipped with rubber grommets, ensure they are properly positioned on the reservoir studs. Install and hand-tighten the mounting bolts.
10. 10

    Tighten reservoir mounting fasteners
    Tighten the upper 10mm mounting bolts to snug, then the lower 8mm bolt. Do not overtighten as the reservoir is plastic and can crack. Fasteners should be snug but not torqued heavily - approximately hand-tight plus 1/4 turn. Verify the reservoir does not move or rattle.
11. 11

    Reconnect washer hoses and electrical connections
    Reconnect the filler neck hose to the top of the reservoir - push firmly until the quick-connect clicks. Connect the supply hose(s) to the pump outlet(s) - push until you hear/feel a click. Connect the main fluid supply hose to the reservoir inlet. Reconnect the electrical connector(s) to the washer pump(s) - push until the locking tab clicks. Tug gently on each connection to verify it is secure.
12. 12

    Reinstall inner fender liner
    Position the inner fender liner back into place. Install all push-pin clips by pushing them fully into the mounting holes until they click. Install the T25 Torx screws along the front edge of the liner. Ensure the liner is properly seated and does not interfere with tire movement or suspension components.
13. 13

    Reinstall wheel and lower vehicle
    Mount the wheel onto the hub and install the lug nuts by hand. Tighten lug nuts in a star pattern until snug. Lower the vehicle to the ground and remove jack stands. With vehicle on ground, torque the lug nuts to Rivian specification (typically 135 lb-ft) in a star pattern.
14. 14

    Fill washer reservoir and test system
    Open the hood and locate the washer fluid filler cap. Using a funnel, fill the reservoir with 3.5 quarts of windshield washer fluid. Power on the vehicle and test the washer system by activating the washer spray. Check for leaks at all hose connections, the reservoir body, and pump seals. Verify spray pattern is correct at windshield. Check for leaks in the wheel well area while system is operating.

Reassembly

1. Ensure all quick-connect hose fittings are fully seated and locked
2. Verify washer pump electrical connectors are properly latched
3. Confirm inner fender liner is completely secured and will not contact tire during turning
4. Double-check that no tools or parts were left in the wheel well area

Verification

• Test washer spray function multiple times to verify proper operation
• Inspect wheel well area for any fluid leaks while washer system is running
• Check that reservoir filler cap is properly seated and sealed
• Turn steering wheel full lock in both directions to ensure fender liner does not interfere with tire
• Test drive vehicle and verify no unusual noises from wheel well area
• Recheck washer fluid level after testing - top off if needed

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle