Suspension noise Q5 8R

When dealing with a suspension noise in an Audi Q5 8R (2008-2017), it is crucial to follow a systematic approach to diagnose and rectify the issue. Below is a detailed guide to identify and fix suspension noises:

Tools Required:

• Jack and jack stands
• Wheel chocks
• Torque wrench
• Socket set and ratchet
• Pry bar
• Suspension noise detection stethoscope (optional)
• Flashlight
• Inspection mirror

Step 1: Safety First

1. Park the Vehicle Safely: Ensure the vehicle is on a level surface. Apply the parking brake and use wheel chocks to prevent rolling.
2. Lift the Vehicle: Use a jack to lift the vehicle and support it securely on jack stands.

Step 2: Visual Inspection

1. Inspect Suspension Components: Look for visible signs of wear or damage on components such as control arms, sway bar links, struts, and bushings.
2. Check for Leaks: Inspect struts and shock absorbers for oil leaks, which indicate failure.
3. Check Bushings: Look for cracked, worn, or missing bushings in control arms and sway bar links.

Step 3: Physical Inspection

1. Check for Loose Components: Use a pry bar to gently move the suspension components and check for excessive play or looseness.
2. Inspect Wheel Bearings: Rotate the wheels by hand and listen for any grinding noise or feel for roughness, indicating bearing issues.

Step 4: Test Drive

1. Recreate the Noise: Drive the vehicle over speed bumps and uneven surfaces to identify the noise source.
2. Use a Stethoscope: If available, use a suspension noise detection stethoscope to pinpoint the exact origin of the noise.

Common Causes and Repair Instructions:

Cause 1: Worn Sway Bar Links

• Symptoms: Clunking noise especially over bumps.
• Repair:
  1. Remove the wheel to access the sway bar link.
  2. Use a socket and wrench to remove the link from the sway bar and control arm.
  3. Install the new sway bar link and torque the bolts to manufacturer specifications.

Cause 2: Damaged Struts or Shocks

• Symptoms: Bouncing or excessive body roll, oil leaks, knocking noise.
• Repair:
  1. Remove the wheel and disconnect the brake line and ABS sensor wires.
  2. Use a spring compressor to safely compress the coil spring.
  3. Remove the strut assembly by loosening the top mount bolts and bottom bolts.
  4. Install the new strut assembly and reattach all components in reverse order.
  5. Torque all bolts to manufacturer specifications.

Cause 3: Worn Control Arm Bushings

• Symptoms: Squeaking or knocking noises, instability during driving.
• Repair:
  1. Remove the wheel and support the control arm with a jack.
  2. Unbolt the control arm from the subframe and the knuckle.
  3. Replace the bushings using a press or by replacing the entire control arm.
  4. Reinstall the control arm and torque the bolts to manufacturer specifications.

Final Steps:

1. Re-check Torque Specifications: Ensure all fasteners are torqued to the correct specifications.
2. Road Test: Conduct a final road test to confirm the noise has been resolved.
3. Alignment Check: Consider having the vehicle’s alignment checked and adjusted if necessary.

By following these steps, you should be able to diagnose and repair most suspension noise issues in an Audi Q5 8R. If the problem persists, it may be necessary to consult a professional technician for further investigation.