Front Air Suspension for Audi S6 A6 Allroad

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2 Front left and right pair

OEM part numbers:
 
Left :
 
Audi 4F0 616 039
Audi 4F0 616 039P
Audi 4F0 616 039S
Audi 4F0 616 039AA
Audi 4F0 616 039M
Audi 4F0 616 039J
Audi 4F0 616 039Q
Audi 4F0 616 039R
Audi 4F0 616 039T
Audi 4F0616039
Audi 4F0616039P
Audi 4F0616039S
Audi 4F0616039AA
Audi 4F0616039M
Audi 4F0616039J
Audi 4F0616039Q
Audi 4F0616039R
Audi 4F0616039T
 
Right :
 
Audi 4F0 616 040
Audi 4F0 616 040 P
Audi 4F0 616 040 S
Audi 4F0 616 040 AA
Audi 4F0 616 040 M
Audi 4F0 616 040 J
Audi 4F0 616 040 Q
Audi 4F0 616 040 R
Audi 4F0 616 040 T
Audi 4F0616040
Audi 4F0616040P
Audi 4F0616040S
Audi 4F0616040AA
Audi 4F0616040M
Audi 4F0616040J
Audi 4F0616040Q
Audi 4F0616040R
Audi 4F0616040T
 
 
Fits the following
AUDIA6 (C6/4F) 2005 - 2011 All Models
AUDIA6 Quattro 2006 - 2011 All Models
AUDIS6 2007 - 2011 All Models
 

Note: this product is currently out of stock in NZ. This listing is for stock that is due to arrive in the country. we generally only keep 1 unit in stock of each item to reduce cost of holding inventory.

Feel free to ask questions or contact us We are able to acquire a wide range of other parts through our suppliers. With 15 years experience we can find it for you.

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What are the common air suspension issues in an Audi A6?

The most common Audi A6 AllRoad Air suspension issues are:

  • Corners Sagging
  • Suspension leaning to one side

How does Audi A6 AllRoad Adaptive suspension work?

The Allroad adaptive suspension was first introduced in 1999 in the A6 Avant as a variant called the A6 AllRoad Quattro. It is now available in the A4 and A6 Allroad Quattro Wagon models, namely the A4 Avant and the A6 Avant.

 

Main Issues

Corners Sagging

Root Cause:

    • There are 3 potential reasons for ride height loss on parking:
      • Faulty Ride height sensor
      • Air Spring Leakages
      • Valve-Block Defect
      • Faulty Air Compressor
      • Shock Absorber Leakage
    • Air leakage related suspension sagging generally is seen when the car is parked overnight and sometimes even over a period of days.
    • This fault can be confirmed using the VCDS Scanning/Diagnosis tool
    • Before starting the scan clear all Fault codes that have already been stored
  • Start the vehicle and try to lift the vehicle by selecting “Lift” option
  • Corner suspension loses ride height after parking
  • In some cases, both sides (left and right) have lost height

Troubleshooting A6 Corner Sagging: Compressor Failure

  • If the compressor ‘humming’ sound can be heard, and the suspension is not able to lift, it could be a case of a failed compressor
  • The Air Compressor tends to corrode over long-term use and internally wears out. Even if the compressor runs, it fails to develop the required pressure.
  • Get yours here

Troubleshooting A6 Corner Sagging: Ride Height Sensor Linkage

  • You need to Scan the Fault codes with the Ignition ON
  • Error codes like “Level Control system sensor : Mechanical  malfunction” point to the ride height sensor linkage as a probable issue.
  • The faulty linkages need to be corrected or replaced.
  • Once the linkages have been rectified the “Air susp.: Wheel change” needs to be changed back to OFF
  • Visually inspect if there is a difference in height between the left and right side in the front and the back
  • Any difference in height can be corrected by doing a height calibration

Troubleshooting A6 Corner Sagging: Air Spring Leakage

  • If the Ride height sensor linkages were not the issue, the next most probable cause would be an air leakage somewhere in the air suspension air circuit.
  • In the case of air leakages, the system does often detect and display the error code.
  • But, however, there have been many cases where confirmed leakages were not detected by Diagnostics.
  • Air springs are known to wear out and crack at the rubber bellow surface gradually after accumulating mileage. They generally would last 70 to 80Kms depending on usage.
  • In a high mileage vehicle, the air springs would be the first place to check for leakages.
  • Fill the Air springs by either 
    • Turning ON the ignition, or
    • In the Diagnostic tool, use the “Air Filling/Venting Set-up” Inspection/Test to fill air into the system, OR 
    • If the diagnostic method is not possible, then you can pressurize the air spring through the inlet using an external air compressor
  • Once the air springs are inflated, you need to spray springs with soap solution to check for leaking.
  • After spraying the soapy water solution, wait to see if there are white foam bubbles that stay at one spot even after wiping it with a finger.
  • In cases where the leak is major, you even hear a hissing noise coming from the leakage point and be able to locate it by ear.

Troubleshooting A6 Corner Sagging: Valve-Block Leakage or Defect

  • The DTC (Diagnostic Trouble Code) will mostly show up as : Level control system

The Valve block is in the boot near the spare wheel. Use a soapy water spray to detect bubbles at the valve block air connector fittings. If there is a crack or damage at the valve block body, then it will need to be replaced get yours here.

Note: Suppose there were no cracks/damages or leakages, then you need to check whether the valve is properly sending air to the individual air struts. This can be done using the diagnostic tool