Air Line

Replace or repair damaged air suspension lines on the 2017 Maserati Levante 3.0L V6 Twin Turbo RWD, including disconnection of air supply, removal of damaged lines, and installation of new lines with proper routing and connection verification.

Warnings

Tools required

Parts

• Air suspension line (specify location: front/rear, left/right) × 1 — Use OEM Maserati part number for specific line location
• Air line retaining clips × 4 — Use OEM specification
• O-rings for air line fittings × 2 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Connect Maserati diagnostic tool and enter air suspension service/diagnostic mode
3. Use diagnostic tool to vent air suspension system completely (this will lower vehicle)
4. Lift vehicle using appropriate lift points and support on jack stands rated for vehicle weight
5. Remove wheel on side where air line requires service using 24mm socket
6. Disconnect negative battery terminal to prevent accidental air compressor activation
7. Inspect air line routing and photograph connections for reference during reinstallation

Procedure

1. 1

   Access air suspension components
   Remove wheel well liner fasteners using appropriate Torx bits and trim tools. Pull back liner to expose air strut and air line routing. For rear lines, remove rear seat cushion and access panel in trunk to reach air supply distribution block. For front lines, remove front bumper cover lower section if necessary for access to air compressor connections.
2. 2

   Identify and mark damaged air line section
   Locate the damaged section of air line requiring replacement. Air lines run from the air compressor/distribution block to each individual air strut. Mark the exact routing path with tape or paint marker, noting how the line passes through chassis brackets and clips. Identify all connection points including quick-connect fittings at strut and supply block.
3. 3

   Disconnect air line from air strut
   Using air suspension line disconnect tool, press the release collar on the quick-connect fitting at the air strut while pulling the air line straight out. Do not twist or bend excessively. If fitting is corroded, apply penetrating oil and allow to soak for 10 minutes. Inspect O-ring on strut fitting for damage and replace if necessary. Cap or plug the strut fitting to prevent contamination.
4. 4

   Disconnect air line from supply block or compressor
   Locate the other end of the air line at the air supply distribution block (rear suspension) or compressor unit (front suspension). Use air line disconnect tool to release the quick-connect fitting. Press release collar and pull line straight out. Inspect fitting for debris or damage. Clean with wire brush if needed and verify O-ring is present and in good condition.
5. 5

   Remove air line mounting clips
   Release all retaining clips and brackets securing the air line along its route through the chassis. Note the exact position of each clip for reinstallation. Some clips may be part of larger harness routing systems. Carefully extract the old air line from all routing channels and brackets without damaging surrounding components or wiring.
6. 6

   Prepare and route new air line
   Compare new air line to removed line to verify correct length and fitting types. Inspect both quick-connect ends for damage and ensure new O-rings are installed (lightly lubricate O-rings with clean air compressor oil if available). Begin routing new line following exact path of original line, threading through chassis brackets and clips. Ensure line has no kinks, sharp bends, or contact with sharp edges that could cause future damage.
7. 7

   Secure air line with mounting clips
   Install all retaining clips and brackets in their original positions to secure the new air line. Ensure clips are fully seated and line is held firmly without excessive compression that could restrict airflow. Line should not be loose enough to contact rotating components or suspension members during full suspension travel. Replace any damaged clips with new ones.
8. 8

   Connect air line to supply block or compressor
   Push the air line fitting straight into the supply block or compressor quick-connect port until you hear and feel a distinct click. Pull gently on line to verify it is fully locked in place. Line should not pull free with moderate force. Verify O-ring is properly seated by checking for even contact around fitting circumference.
9. 9

   Connect air line to air strut
   Remove cap or plug from air strut fitting. Push new air line fitting straight into the strut quick-connect port until you hear and feel a positive click indicating full engagement. Pull gently on line to confirm secure connection. Ensure line has adequate slack for full suspension articulation without pulling tight or creating stress on fittings.
10. 10

    Reinstall wheel well components and wheel
    Reinstall wheel well liner with all fasteners in original locations. Ensure liner does not contact or pinch air line. Reinstall wheel onto hub and hand-tighten lug nuts in star pattern. Lower vehicle until wheel just contacts ground (do not place full weight on wheels yet).
    Torque spec

    Wheel Lug Nuts142 Nm (105 lb-ft)
11. 11

    Reconnect battery and pressurize system
    Reconnect negative battery terminal. Use diagnostic tool to exit service mode and command air suspension system to pressurize. Monitor system pressure on diagnostic tool. Listen for air leaks at all connection points. If hissing or leaks are detected, immediately depressurize system and verify connection is fully seated with proper O-ring installation.
12. 12

    System leak test and calibration
    With system fully pressurized to operating pressure (verify on diagnostic tool, typically 14-16 bar), apply soapy water solution to all air line connections at strut and supply block. Watch for bubbles indicating leaks. If no leaks detected after 2 minutes, use diagnostic tool to perform air suspension calibration and height sensor learning procedure following on-screen prompts. Clear any stored fault codes.

Reassembly

1. Lower vehicle completely to ground and torque wheel lug nuts to specification in star pattern
2. Reinstall any trim panels or access covers removed during procedure
3. Use diagnostic tool to cycle suspension through all height settings (minimum, normal, maximum) to verify proper operation
4. Check for proper vehicle ride height at all four corners using diagnostic tool measurements

Verification

• Start engine and allow air suspension to reach normal operating pressure (compressor should shut off automatically)
• Use diagnostic tool to verify no active or pending air suspension fault codes
• Check that vehicle maintains proper ride height without gradual settling over 30 minutes (indicates no leaks)
• Test drive vehicle at various speeds and verify suspension operates normally with no warning lights
• Recheck all air line connections with soapy water after test drive to confirm no leaks developed
• Verify compressor does not cycle excessively (should only run briefly every 4-6 hours in parked vehicle)
• Use diagnostic tool to verify all four air struts are responding to height commands and reaching target pressures

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