This procedure covers the removal and replacement of the steering coupler on a 2025 Rivian EDV 500, which connects the steering column to the steering rack input shaft.

Warnings

Tools required

Parts

• Steering coupler assembly × 1 — Use OEM specification
• Steering coupler bolt kit × 1 — Use OEM specification
• Intermediate shaft seal (if equipped) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and apply parking brake
2. Place wheel chocks behind rear wheels
3. Center the steering wheel and verify wheels are pointed straight ahead
4. Disconnect the 12V battery negative terminal and wait 3 minutes for airbag system capacitors to discharge
5. Install steering wheel locking tool or secure steering wheel to prevent rotation
6. Raise front of vehicle and support on jack stands at designated lift points
7. Remove front skid plate or underbody panels to access steering components
8. Photograph steering coupler position and alignment for reference

Procedure

1. 1

   Access steering coupler
   From underneath the vehicle, locate the steering coupler where the steering column shaft connects to the steering rack input shaft. This is typically located near the firewall in the front subframe area. Remove any heat shields or protective covers that obstruct access to the coupler.
2. 2

   Mark alignment references
   Using a marker or paint pen, make precise alignment marks across the steering coupler and both the steering column shaft and steering rack input shaft. Make marks on at least two sides of the coupler to ensure proper rotational alignment during reinstallation. Document these marks with photos.
3. 3

   Clean fastener area
   Apply penetrating lubricant to the steering coupler bolt threads and allow to soak for 5-10 minutes. Use a wire brush to clean any corrosion or debris from the bolt heads and surrounding area to prevent bolt damage during removal.
4. 4

   Disconnect electrical connections
   Locate and disconnect any electrical connectors attached to or near the steering coupler, such as steering angle sensors or torque sensors. Label each connector for correct reinstallation. Move wiring harnesses aside to prevent damage.
5. 5

   Remove upper coupler bolt
   Using the appropriate socket, remove the upper pinch bolt that secures the steering coupler to the steering column shaft. Support the coupler while removing the bolt to prevent it from dropping. Note the bolt orientation and any washers or spacers present.
6. 6

   Remove lower coupler bolt
   Remove the lower pinch bolt that secures the steering coupler to the steering rack input shaft. Support the coupler assembly. Check for any additional hardware such as roll pins or secondary fasteners that may secure the coupler.
7. 7

   Separate and remove coupler
   Carefully separate the steering coupler from both shafts. If the coupler is seized, use a small pry bar or separation tool to gently spread the pinch clamp areas. Do not strike the steering column shaft or rack input shaft with excessive force. Once loosened, slide the coupler off and remove from vehicle.
8. 8

   Inspect shafts and splines
   Thoroughly inspect the steering column shaft and steering rack input shaft for damage, excessive wear, or corrosion. Check the splines for wear patterns, cracks, or deformation. Clean both shafts with a wire brush and wipe clean. Replace any damaged components before installing new coupler.
9. 9

   Prepare new coupler
   Unpack the new steering coupler and verify it matches the original part. Check that the spline patterns and bolt hole positions align correctly. Inspect the new coupler for any shipping damage. Apply a light coating of anti-seize compound to the shaft splines if recommended by manufacturer.
10. 10

    Install new coupler
    Position the new steering coupler onto the steering rack input shaft first, aligning the splines and ensuring the pinch bolt clamp is oriented correctly per the alignment marks. Slide the coupler onto the shaft until it is fully seated. Then align the upper portion with the steering column shaft, matching all alignment marks made during disassembly.
11. 11

    Install and torque fasteners
    Install the lower pinch bolt finger-tight first, ensuring the bolt passes through both the coupler clamp and the flat spot on the steering rack input shaft. Then install the upper pinch bolt through the coupler clamp and steering column shaft flat. Verify alignment marks are still matched. Since no torque specifications are available in the database, consult the vehicle service manual for proper torque values or use OEM-recommended specifications. Tighten bolts to specification in the sequence recommended by manufacturer.
12. 12

    Reconnect electrical connections
    Reconnect all electrical connectors to steering sensors in their original positions. Ensure connectors are fully seated and locking tabs are engaged. Route wiring harnesses away from hot or moving components and secure with original clips.
13. 13

    Reinstall protective covers
    Reinstall any heat shields, protective covers, or underbody panels that were removed for access. Ensure all fasteners are properly tightened and no components interfere with steering movement.

Reassembly

1. Reinstall front skid plate and underbody panels removed during disassembly
2. Lower vehicle from jack stands to ground
3. Remove steering wheel locking tool
4. Reconnect 12V battery negative terminal
5. Turn ignition to ON position and verify no steering-related warning lights are illuminated
6. If equipped, clear any diagnostic trouble codes related to the steering system using appropriate scan tool

Verification

• With vehicle on level ground and engine off, verify steering wheel is still centered with front wheels pointing straight ahead
• Start vehicle and perform lock-to-lock steering test while stationary to verify full range of motion without binding or noise
• Test drive vehicle at low speed in a safe area, checking for proper steering response, unusual noises, or vibrations
• Verify electric power steering system operates normally with no warning lights
• Check for any play or looseness in the steering system by having assistant turn steering wheel slightly while you observe coupler connections from underneath
• Verify steering angle sensor is functioning correctly if vehicle is equipped with driver assistance systems
• If steering wheel is off-center after installation, a professional steering alignment and clockspring recentering may be required

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