How To Replace The Rear ABS Speed Sensor On A Chrysler 300

Last Updated on 2025-09-07

Hello fans of automotive repair and the Chrysler 300; we are about to undergo the glorious process of replacing the 300’s ABS speed sensor. This specific guide will cater to the 2015 Chrysler 300, where precision is paramount, and respect is a given as the vehicle is indeed splendid.

We will work on the right-side ABS wheel speed sensor first; however, the left side mirrors this process with different wire arrangements. Whether dealing with a pesky warning light or a malfunctioning sensor, the comprehensive guide provided below will prepare you.

Tools and Materials You’ll Need

  • Jack and jack stands (or a lift)

  • Wheel chocks

  • Lug wrench

  • 10mm socket and ratchet

  • Flathead screwdriver or trim removal tool

  • Torque wrench

  • Penetrating oil (optional)

  • OBD2 code reader (highly recommended)

  • New ABS speed sensor (OEM or high-quality aftermarket)

  • Nitrile gloves (optional, but helpful)

Preparation and Safety

Make sure that the car is parked on a leveled area, the parking brake is activated, and the back wheels are securely locked with chocks so the car doesn’t move. Afterwards, take your jack and raise the front right side of the car until it is high enough to place the jack stand on it for safety. Additionally, it is best to “crack” the lug nuts while the car is on the ground, that way when the car is raised, it won’t be difficult to take the wheel off. Once the wheel is removed, the entire brake assembly and sensor should be easily accessible.
If you have an OBD2 scanner, you can check it first to make sure it’s the right front sensor that is the problem. Usually, the codes are very clear. This avoids the worst of scenarios which is attempting to change a sensor which is not the faulty one.

Diagnosing a Faulty Sensor

While diagnostic tools like OBD2 scanners should not be overlooked when determining the problem, sensors that correspond to a vehicle's wheels often contain a code such as C0035, C0040, or C0045. Do your homework— make sure the problem is isolated to the right front sensor. A correction would be much harder if the wrong part was removed.

Locating and Removing the ABS Speed Sensor

After removing the wheel, locate the ABS speed sensor, which is fitted to the rear of the rotor, adjacent to the brake hub. To remove it, you need a 10mm ratchet wrench to loosen one bolt. If the sensor has not been serviced or shows signs of corrosion around it, consider loosening the penetrating oil cap and applying it to the bolt and base of the sensor. Give it some time to work, then remove the bolt and try to lift the sensor from the hub.

You may encounter some resistance and that's ok, do not muscle it out. In an attempt to ease the removal, shift it either on top or below of the hub, or use a small flathead screwdriver to slowly lift it. Resist the urge to alter the structure of the object, breaking it off the hub is not an option. When successful, twisting the object will remove the wire connected.

The Unhooking of the Connector

If you trace the wire from the sensor, you will notice it is clipped in several places throughout the wheel well. You can remove the clips with a trim tool or flathead screwdriver, but do not damage the wire. Continue tracing the wire until you locate the connector. Most connectors have a small tab that you press to unplug it, while others might have a red locking tab that you must slide back first.

Congratulations! You have now completely detached the old sensor from your vehicle. If your new sensor comes with new clips, then that is wonderful. If not, unclip the old sensor’s clips and put them on the new sensor, or use zip ties to secure the wire. Just ensure that the wire does not continuously rub against any moving parts or anything that heats up.

Reassembly: The Homeward Bound

Start the reassembly by connecting the new sensor. Make sure you hear the connector click back into place. If it comes with a red locking tab, do remember to slide it back down into the lock position. After that, guide the wire in the same direction as the original’s, clipping it or restraining it so it is tight and protected and will not get damaged.

After this, place the sensor into the hub. It should slide in very easily. Tighten it back with the 10mm bolt. There is no need to tighten it excessively; moderately will be just fine. Put the wheel back on, tighten the lug nuts with your hands, and lower the car afterwards. The lug nuts should be torqued correctly afterwards. Chrysler recommends approximately 110 ft-lbs whenever claimed.

After everything is finished, turn the engine on and take the vehicle for a short drive. Assuming your luck holds out, the ABS light should turn off automatically. If this isn't the case, use your scanner to erase the code. Still having problems? Make sure the connection and the sensor is completely used.

While You're At It...

When taking off the wheel, it only makes sense to conduct a brief inspection of the entire area. Check the condition of the brake pads and rotors, spin the hub to assess if there is any grating noise—this may indicate a faulty bearing—and inspect the suspension components including the ball joints and tie rods. There’s no point in repairing one item if another, more problematic item is being overlooked.

Final Thoughts

Though this task is small, it’s very crucial. The ABS sensor makes sure that your traction control and braking system operate properly, especially when driving on slippery surfaces. Completing the swap yourself saves a considerable amount of time and money while providing the satisfaction of doing it with your own hands.

If for any reason you choose to move on to the left side, run into a snag, or just plain holler, let me know. I am happy to help and finish it up with you!

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