This procedure covers the replacement of the ABS tone ring on a 2024 Rivian EDV 500 Dual Motor AWD electric delivery van, including hub disassembly and sensor clearance verification.

Warnings

Tools required

Parts

• ABS tone ring (reluctor ring) × 1 — Use OEM specification
• Hub bearing assembly (if damaged) × 1 — Use OEM specification
• Axle nut (single-use) × 1 — Use OEM specification
• Brake cleaner × 1 — Non-chlorinated
• Anti-seize compound × 1 — Nickel-based

Preparation

1. Place the vehicle in service mode using the center display or Rivian service software to disable high-voltage systems
2. Verify the vehicle is in Park with parking brake engaged
3. Place wheel chocks behind the wheels opposite to the corner being serviced
4. Loosen the wheel lug nuts while the vehicle is on the ground
5. Connect a scan tool and document any existing ABS fault codes
6. Raise the vehicle using the factory lift points and secure with appropriately-rated jack stands
7. Remove the wheel and tire assembly
8. Verify there is no residual voltage in nearby EV components if working near the rear motor

Procedure

1. 1

   Remove brake caliper assembly
   Remove the brake caliper mounting bolts and carefully hang the caliper from the suspension using a wire hanger or bungee cord. Do not allow the caliper to hang by the brake hose. Remove the brake rotor retaining screw (if equipped) and slide the rotor off the hub.
2. 2

   Disconnect ABS wheel speed sensor
   Locate the ABS wheel speed sensor connector near the strut tower or frame rail. Depress the locking tab and disconnect the sensor harness. Remove the sensor mounting bolt and carefully extract the sensor from the hub or knuckle. Inspect the sensor tip for damage or metal debris.
3. 3

   Remove axle nut
   Have an assistant apply the brake pedal or use a pry bar to prevent hub rotation. Remove the axle nut using a breaker bar and appropriate socket. Note that Rivian axle nuts are single-use and must be replaced. Set the old nut aside for disposal.
4. 4

   Remove hub bearing assembly
   Remove the hub bearing mounting bolts from the back of the knuckle. There are typically 4 bolts securing the hub assembly. If the hub is seized to the knuckle, use a plastic mallet to tap around the perimeter to break it free. On AWD models, be prepared to support the CV axle as you withdraw the hub.
5. 5

   Inspect and measure tone ring damage
   With the hub removed, examine the ABS tone ring for the specific damage: missing teeth, cracks, corrosion, or deformation. Use a dial indicator to check for runout if the ring appears bent. Confirm replacement is necessary before proceeding with removal.
6. 6

   Remove damaged tone ring
   Position the hub assembly in a hydraulic press or use a specialized tone ring removal tool. Apply even pressure to press the old tone ring off the hub. The ring may be pressed onto the inner race or outer diameter of the hub depending on design. Take care not to damage the hub bearing races during removal. If the tone ring is riveted or welded, you may need to drill out attachment points or grind welds carefully.
7. 7

   Clean hub mounting surface
   Use a wire brush and brake cleaner to thoroughly clean the tone ring mounting surface on the hub. Remove all rust, debris, and old adhesive. The surface must be completely clean and smooth for proper tone ring seating. Dry the surface completely with compressed air or lint-free cloth.
8. 8

   Install new ABS tone ring
   Position the new tone ring on the hub with the teeth facing the correct direction (toward the sensor mounting location). Verify proper alignment by checking that the ring is perpendicular to the hub axis. Using a hydraulic press or tone ring installation tool, apply steady, even pressure to press the ring onto the hub until it seats completely against the shoulder. Apply pressure only to the solid portions of the ring, never on the teeth.
9. 9

   Verify tone ring installation
   Use a dial indicator to check tone ring runout. Rotate the hub and measure radial runout at the tooth tips. Runout should not exceed 0.020 inches (0.5mm). Check that the ring is fully seated and there is no gap between the ring and hub shoulder. Verify that all teeth are intact and evenly spaced.
10. 10

    Reinstall hub bearing assembly
    Clean the hub mounting surface on the knuckle with brake cleaner. Apply a thin coat of anti-seize to the hub mounting bolts (not the hub face). Align the hub with the CV axle splines and carefully slide the assembly into position on the knuckle. Thread in all hub mounting bolts and tighten in a star pattern to ensure even seating. Refer to service manual for final torque specification.
11. 11

    Install new axle nut
    Thread the new axle nut onto the CV axle shaft by hand until it seats against the hub. Have an assistant apply the brake or use a pry bar to prevent rotation. Torque the axle nut to manufacturer specification using a torque wrench. Refer to Rivian service documentation for the exact value, typically in the 150-200 ft-lb range for this vehicle.
12. 12

    Reinstall ABS wheel speed sensor
    Clean the sensor bore in the knuckle or hub with brake cleaner. Apply a small amount of dielectric grease to the sensor O-ring (if equipped). Insert the sensor carefully into the bore, ensuring it seats completely. Install the sensor mounting bolt and tighten to specification. Reconnect the sensor harness connector until it clicks.
13. 13

    Measure air gap and sensor clearance
    Using a feeler gauge or non-magnetic brass shim stock, verify the air gap between the ABS sensor tip and tone ring teeth is within specification (typically 0.020-0.050 inches). Rotate the hub by hand through a complete revolution while observing the gap. The clearance should remain consistent with no binding or contact.
14. 14

    Reinstall brake components and wheel
    Reinstall the brake rotor and secure with retaining screw if equipped. Mount the brake caliper back onto the caliper bracket and tighten mounting bolts to specification. Pump the brake pedal several times to seat the pads. Install the wheel and tire assembly, tightening lug nuts in a star pattern to specification after lowering the vehicle.

Reassembly

1. Lower the vehicle to the ground and perform final torque on all wheel lug nuts using a torque wrench in a star pattern
2. Exit service mode and restore the vehicle to normal operating condition
3. Ensure the parking brake releases properly and no warning lights are illuminated on startup

Verification

• Connect a scan tool and clear any ABS fault codes stored during the repair
• Perform a test drive at speeds above 5 mph to allow the ABS system to detect the wheel speed sensor signal
• Verify that no ABS warning lights illuminate on the instrument cluster
• Use the scan tool to monitor live data from the repaired wheel speed sensor, confirming it reads accurately and matches the other wheel speeds
• Perform a controlled ABS activation test in a safe area (if equipped with ABS test function) to verify proper system operation
• Re-scan for fault codes after the test drive to confirm no new codes have been set

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