This procedure covers the removal and replacement of a front ABS wheel speed sensor on a 2019-2024 Toyota RAV4 with the 2.5L I4 engine, including proper connector handling and sensor installation.

Warnings

Tools required

Parts

• Front ABS wheel speed sensor × 1 — Toyota OEM 89542-42050 (Left) or 89543-42050 (Right)
• Sensor mounting bolt × 1 — Use OEM specification if corroded

Preparation

1. Park vehicle on level surface and engage parking brake
2. Place wheel chocks behind rear wheels
3. Loosen front wheel lug nuts while vehicle is on ground
4. Raise front of vehicle and secure on jack stands at manufacturer-specified jacking points
5. Remove the front wheel on the side requiring sensor replacement
6. Turn steering wheel to gain access to sensor area if needed

Procedure

1. 1

   Locate the ABS sensor and connector
   The front ABS wheel speed sensor is mounted on the back side of the steering knuckle near the wheel bearing hub. Locate the sensor body and follow the wire harness up to the connector mounted on the strut or inner fender well. The connector typically has a gray or black plastic clip.
2. 2

   Disconnect the sensor electrical connector
   Press the locking tab on the sensor connector and carefully pull the connector apart. Do not pull on the wires themselves. If the connector is difficult to separate, use a small flathead screwdriver to gently release the lock tab while pulling. Note the routing of the wire harness for reinstallation.
3. 3

   Remove wire harness clips and routing guides
   Release any wire harness clips or routing guides that secure the sensor wire to the suspension components. These are typically push-type clips on the strut or control arm. Carefully note the exact routing path as improper routing can cause wire damage from rubbing or heat.
   ⚠Ensure the sensor wire will not contact the CV axle, brake rotor, or suspension components during wheel movement after reinstallation
4. 4

   Remove the ABS sensor mounting bolt
   Using a 10mm socket, remove the single bolt securing the ABS sensor to the steering knuckle/wheel hub assembly. If the bolt is corroded, apply penetrating oil and allow it to soak for several minutes. Keep the bolt if it is in good condition with no corrosion or thread damage.
5. 5

   Extract the ABS sensor from the hub
   Carefully pull the ABS sensor straight out of the hub bore. If the sensor is seized due to corrosion, gently twist while pulling. Do not pry against the sensor body as it is fragile plastic. If severely stuck, apply penetrating oil around the sensor body and wait before attempting removal again. Avoid excessive force that could break the sensor in the bore.
6. 6

   Clean the sensor mounting bore
   Use a wire brush to thoroughly clean the sensor mounting bore in the hub assembly, removing all corrosion, dirt, and old debris. The bore must be clean for proper sensor seating and magnetic pickup. Also clean the bolt hole threads in the knuckle.
7. 7

   Prepare and install the new sensor
   Inspect the new sensor for any shipping damage. Apply a thin coat of dielectric grease to the sensor O-ring if equipped, or a light coating of anti-seize to the sensor body (avoid the tip). Insert the sensor straight into the hub bore until it seats fully against the knuckle. Ensure the sensor is not cross-threaded or binding.
8. 8

   Install and torque the sensor mounting bolt
   Install the sensor mounting bolt by hand and thread it in carefully to avoid cross-threading. Once hand-tight, use a torque wrench to tighten the bolt to specification. This is a critical torque value - overtightening will crack the sensor housing or strip the aluminum threads in the hub.
   ⚠️Do not exceed 10.0 Nm (7.0 lb-ft) torque specification - overtightening will damage the sensor or hub threads
   Torque spec

   ABS Sensor Bolt10 Nm (7 lb-ft)
9. 9

   Route and secure the sensor wire harness
   Route the sensor wire harness following the exact path noted during removal. Ensure adequate clearance from the CV axle, brake components, and suspension travel. Reinstall all wire harness clips and routing guides, pressing them firmly into place. Verify the wire has no tension or sharp bends.
10. 10

    Reconnect the electrical connector
    Align the sensor connector halves and push together firmly until the locking tab clicks into place. Gently tug on the connector to verify it is fully locked. Ensure no moisture or debris is present in the connector that could cause corrosion.
11. 11

    Reinstall the wheel
    Mount the wheel onto the hub and install the lug nuts by hand. Tighten the lug nuts in a star pattern to draw the wheel evenly onto the hub. Lower the vehicle until the tire contacts the ground but does not bear full weight, then torque the lug nuts to specification in a star pattern.
    Torque spec

    Wheel Lug Nuts140 Nm (103 lb-ft)

Reassembly

1. Lower vehicle completely and remove jack stands
2. Perform final torque check on lug nuts with vehicle on ground
3. Start the vehicle and verify the ABS warning light operates normally (illuminates briefly at startup then turns off)
4. Test drive the vehicle at low speed and verify no ABS warning light illumination

Verification

• With ignition on, verify the ABS warning light turns off after initial bulb check (within 3-4 seconds)
• Use an OBD-II scanner to check for any stored ABS codes - clear any old codes and verify no new codes are present
• Perform a test drive at speeds above 12 mph to allow the ABS system to recognize the new sensor signal
• Verify the ABS warning light remains off during and after test drive
• Optional: Use a scan tool with live data capability to verify the sensor is producing a speed signal that matches the opposite side sensor

More procedures for this vehicle