Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
- Locate the leaking air with soap and water or a stethoscope.
- Before servicing the air tube, perform the following procedures.
- If you are working on an electric vehicle, place vehicle in service mode.
- Using a scan tool, select the suspension corner to be repaired and exhaust the air pressure from that corner.
- NOTE:
Do not pinch the air line when cutting.
Cut and remove the leaking line section (1). This an example of a good cut.
This is an example of a bad cut (1).
Inspect the tube ends (1) making sure there are no sharp edges, burrs, or corners because of a pinched cut. The end of the tube should be round, squared off, with smooth edges.
Remove the splice shipping plugs (1).
- Slide the airline tube into the splice/union until the line bottoms. Lightly pull back on the hose to be sure it's retained in the splice.
Install the airline tube (1) to the other end of the splice/union.
- Secure the air line with the splice/union to the vehicle.
- Ensure that the vehicle is on level ground and perform the following steps.
- Verify the vehicle is in service mode.
- Install a scan tool.
- Perform the air spring inflate command for the required corner.
- 1 or 2 short inflates while the wheel is suspended in the air and not touching the ground.
- Set the vehicle on the ground so that the tire is touching the ground but is NOT supporting the entire weight of the vehicle. Continue to perform the air spring inflate until the pressure in the air spring is above the minimum pressure 4 Bar (60 PSI).
- Set the vehicle completely on the ground and use the following command: Level Vehicle to Target Height - Level Vehicle to Normal Ride Height
- Leak check the system by running either of these tests through the scan tool:
- Pneumatic Connection Pressure Test
- Test Compressor Pneumatic Operation
- Verify the splice repair with soap and water or stethoscope.
Ensure that the repaired airline tube is secured in a location where the line is not pinched, kinked, cause a rattle, and will not contact hot surfaces.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.