OEM Chrysler 300M Speed Sensor

Chrysler 300M Speed Sensor Parts and Q&A

• Speed Sensor, Front Passenger Side
  4779050AB
  Q: How to Service and Repair a Speed Sensor on the Front Wheel on Chrysler 300M?

  A:

  In order to service or repair the front wheel speed sensor, raise the vehicle on jack stands or a frame contact type hoist and then remove the tire and wheel assembly. Following that, open the bolt that holds the speed sensor cable bracket in place and remove the retainer that's holding the grommet under the inner fender. Pull the grommet out and take the speed sensor cable off of the vehicle wiring harness. Unscrew the speed sensor bracket bolt from the Steering Knuckle, take out the sensor head and if it's rusty, gently tap both sides of the sensor ear with a small hammer and brass punch. Start with the wire connection from the car's harness to the speed sensor cable connector, then place the speed sensor cable assembly grommet in the front inner fender, after that the grommet and retainer bracket, securing it with the bolt. Put the speed sensor cable upwards when you install the routing bracket on the strut to keep it from being damaged. Put the speed sensor cable routing bracket on the steering knuckle and use a torque wrench to tighten the bolt to 12 Nm or 105 inch lbs. Use a tiny amount of the recommended High Temperature Multipurpose grease on the speed sensor head before putting it onto the steering knuckle. Next, tighten the holding screw to 7 Nm (60 inch lbs.). After that, put on the wheel assembly and lower the vehicle. Use the road to test ABS and the base systems.
• Speed Sensor
  4800879
  Q: How to Maintain a Speed Sensor on the Front Wheel on Chrysler 300M?

  A:

  Before servicing the front wheel speed sensor, lift the car, unbolt the wheel assembly and remove the tire and wheel. Following that, separate the bolt attaching the speed sensor cable routing bracket to the strut and then remove the retainer over the speed sensor sealing grommet inside the inner fender. Release the grommet and unplug the speed sensor cable from the wire cable in the car. Disconnect the bolt holding the speed sensor to the Steering Knuckle and remove the sensor head. If it is frozen and rusty, hit the sensor ear with a hammer and brass punch, moving back and forth. Do not attempt to turn the speed sensor head using pliers when the locating pin is held firmly, because this could damage the component. Start by linking up the wheel speed sensor cable's plug to the vehicle wire harness and then fasten the speed sensor's cable grommet inside the front inner fender. Connect the grommet and retainer bracket to the inner fender with the supporting bolt. Put the speed sensor cable up and through the hole in the strut during installation so it does not touch moving components. Connect the routing bracket for the speed sensor to the steering knuckle and fasten it by tightening the main bolt to 12 Nm (105 inch lbs.). Add some High Temperature Multipurpose grease to the speed sensor head and secure it onto the steering knuckle, tightened to 7 Nm (60 inch lbs.). After that, fit the wheel and tire assembly, bring the vehicle down onto the ground and perform a road test to check the base and ABS systems.