Replace or recalibrate the air suspension height sensor to restore proper ride height control and suspension function on the 2014 Ram 2500 with air suspension.

Warnings

Tools required

Parts

• Air suspension height sensor × 1 — Use OEM specification
• Sensor mounting hardware kit (if corroded) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn ignition to ON position and access air suspension control panel
3. Disable air suspension system using dashboard controls or by disconnecting air suspension compressor relay
4. Turn ignition OFF and wait 2 minutes for system to depressurize
5. Chock rear wheels securely

Procedure

1. 1

   Remove wheel and access suspension
   Loosen wheel lug nuts while vehicle is on ground. Raise front of vehicle using floor jack at designated lift point on frame rail. Support vehicle on jack stands placed under frame rails. Remove wheel completely to access suspension components.
   Torque spec

   Wheel Lug Nuts183 Nm (135 lb-ft)
2. 2

   Locate height sensor
   The air suspension height sensor is mounted to the lower control arm with a linkage rod connecting to the frame rail or upper control arm. Identify the sensor body (approximately 3 inches long black plastic housing) and its mounting bracket on the lower control arm near the ball joint area.
   ℹ️Take photos of sensor orientation and linkage position before removal for proper reinstallation reference
3. 3

   Disconnect sensor electrical connector
   Locate the electrical connector on the height sensor. Press the release tab and carefully pull the connector straight off the sensor. Inspect connector terminals for corrosion or damage. If connector is corroded, clean terminals with electrical contact cleaner.
   ⚠Do not pull on wires - only pull on connector body to avoid wire damage
4. 4

   Remove sensor linkage rod
   The linkage rod connects the sensor arm to the frame or upper mounting point via a ball socket or clip connection. Note the exact position of the linkage for reinstallation. Remove the retaining clip or press the ball socket release to disconnect the linkage rod from the sensor arm. If equipped with a threaded adjustment link, note the exposed thread count before removal.
   ℹ️Linkage rod length adjustment directly affects ride height - maintain original adjustment unless recalibration is planned
5. 5

   Remove height sensor mounting fasteners
   Remove the mounting bolts securing the height sensor bracket to the lower control arm using a 10mm socket. Most applications use two bolts. Support the sensor while removing the final bolt to prevent it from falling. Remove sensor and bracket assembly from vehicle.
   Torque spec

   Mounting Bolts37 Nm (27 lb-ft)
6. 6

   Inspect and prepare new sensor
   Compare old and new sensors to verify correct replacement part. Check that mounting bracket holes align and connector type matches. If reusing mounting bracket, clean threads with wire brush and apply light coat of anti-seize to bolt threads. Verify new sensor rotates smoothly through full range of motion without binding.
   ℹ️Some height sensors come pre-calibrated to a neutral position - do not move sensor arm until after installation and initial calibration
7. 7

   Install new height sensor
   Position new height sensor and mounting bracket on lower control arm in original location. Thread mounting bolts by hand first to ensure proper alignment. Torque mounting bolts to specification using torque wrench. Ensure sensor body moves freely and does not contact any suspension components throughout suspension travel range.
   Torque spec

   Mounting Bolts37 Nm (27 lb-ft)
8. 8

   Reconnect linkage rod
   Attach linkage rod to sensor arm in exact position noted during removal. If ball socket type, press firmly until click is heard. Install retaining clip if equipped. For threaded adjustable links, set to original thread exposure measurement. Verify linkage rod does not bind at either end and allows sensor arm to move freely.
   ⚠Incorrect linkage length will cause ride height errors and may prevent proper calibration
9. 9

   Connect electrical connector
   Route sensor wiring harness to avoid contact with moving suspension components, exhaust, or sharp edges. Connect electrical connector to height sensor by pressing firmly until tab clicks into locked position. Gently tug on connector to verify secure connection.
10. 10

    Reinstall wheel and lower vehicle
    Install wheel onto hub and thread lug nuts by hand. Lower vehicle until wheel contacts ground but vehicle weight is not fully on suspension. Torque lug nuts to specification in star pattern. Fully lower vehicle and remove jack stands and floor jack.
    Torque spec

    Wheel Lug Nuts183 Nm (135 lb-ft)
11. 11

    Calibrate height sensor
    Connect scan tool to vehicle OBD-II port. Turn ignition to ON position without starting engine. Re-enable air suspension system. Navigate to air suspension module and select height sensor calibration procedure. Follow scan tool prompts to complete calibration - typically requires cycling suspension through multiple height positions. Clear any stored suspension fault codes after successful calibration.
    ⚠️Ensure no persons or objects are near vehicle during automatic suspension height adjustments
    ℹ️Calibration procedure may take 5-10 minutes and requires vehicle on level surface with engine running

Reassembly

1. Ensure all electrical connections are secure and properly routed away from moving components
2. Verify linkage rod maintains proper adjustment and moves freely throughout suspension travel
3. Double-check all mounting fasteners are torqued to specification

Verification

• Start engine and verify no air suspension warning lights remain illuminated on instrument cluster
• Use scan tool to verify height sensor is reading reasonable values (typically 0-5 volts with suspension at normal ride height)
• Cycle air suspension through all available height settings (normal, off-road, entry/exit if equipped) and verify smooth operation
• Test drive vehicle at low speed and verify suspension maintains proper ride height without fault codes
• Recheck ride height measurements on level ground - all four corners should be within manufacturer specifications (typically ±10mm variance side-to-side)

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