Ride Height Sensor: Service and Repair

Air Spring Leveling Sensor Replacement

Removal Procedure





1. Important: Remove the air suspension system fuse before working on the rear suspension components or the rear axle. Failure to remove the air suspension system fuse could cause the calibration of the air suspension leveling sensor to change and the air suspension system not to function properly.

Remove the air suspension system fuse.
2. Ensure that the vehicle is parked on level surface.
3. Inspect tires for proper tire pressure. Refer to Tire Inflation Pressure Specifications.
4. Inspect the air suspension system components for damage or defects.
5. Raise and support the vehicle. Refer to Vehicle Lifting.
6. Remove the rear tire and wheels.
7. Support the rear axle and set the rear axle to proper D height. Refer to Trim Height Specifications.
8. Disconnect the air spring level sensor link from the upper control arm.





9. Disconnect the air spring level sensor electrical connector.





10. Remove the air spring level sensor to the frame mounting bolts.
11. Remove the air spring level sensor.

Installation Procedure





1. Install the air spring level sensor link to the upper control arm.





2. Notice: Refer to Fastener in Service Precautions.

Important: Do not remove the air spring level sensor locating pin until the air spring level sensor has been properly aligned and the proper D height has been measured and maintained. Refer to Trim Height Specifications.

Install the air spring level sensor to the frame mounting bolts.
Tighten the air spring level sensor to the frame mounting bolts to 8 Nm (71 inch lbs.).





3. Connect the air spring level sensor electrical connector.





4. Notice: Failure to remove the air suspension auto level control sensor locating pin before the rear axle support is removed will cause damage to the air suspension auto level control sensor.

Remove the air spring level sensor locating pin.
5. Remove the rear axle support.
6. Install the rear tire and wheels.
7. Lower the vehicle.
8. Install the air suspension system fuse.
9. Start the vehicle and run for approximately 1 minute to ensure that the air spring leveling system is functioning properly.
10. Check the D height. Refer to Trim Height Inspection Procedure.