Join Date: Mar 2018
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TOUAREG AIR SUSPENSION INFORMATION. This summary is offered to provide information that may assist in solving air suspension problem and relates to my 2005 V8 with less than 37000 miles.
At about 34000 miles the driver side air spring began leaking air. Not having a lift the Touareg was taken to a local service shop (owner having an Audi) for repair where it was determined that the air leakage was thought the aluminum top. Both air springs in the rear were replaced at the time with new after market units originating in Germany. Both within 3 months needed the inlet check values and lines replaced. The driver side read failed and was replaced with a USA built new unit from Suncore. The bad unit was returned and replaced with a new unit as a spare as the original supplier did not have any in stock.
At around 36000 miles we moved to Florida and during the trip the passenger side front air spring began loss air (slow leak). Consequently, new Suncore air springs were acquired and installed locally; however, upon completion of the installation the truck was directed by the system in a manner that resulted in the passenger side front to be at the lowest level, the driver front to be at the highest level, and the rear to be a different levels somewhere between the lowest and highest possible. The repair shop did not have the equipment or knowledge to fix this problem. UNDERSTAND THAT THE ABILITY TO ALTER OR REVIEW THE COMPUTER PROGRAMING ON A TOUAREG IS A CLOSELY HELD PROGRAM THAT ONLY A HIGH VW REPAIR FACILITY CAN AFFORD. A KNOCKOFF IS AVAILABLE ON THE INTERNET AT LOW COST.
In reviewing this problem on the internet it was found that a height calibration was required. The necessary program was acquired to allow height calibration; however, it would not communicate with the leveling module. It stated the module was bad so a junk but operational module was acquired. It was installed and allowed communications. The problem still persisted as it would not allow adjustment. The required program was locked out.
At this junction the truck was taken to the local VW dealer whose service department was rated the best in the USA. It was left with them to analyze the problem and determine a course of action. Making the story short, after about three months the problem was not solved even after trying new height sensors, new inlet check valves, and new passenger side strut (complete). This dealer had the regional service experts as well as being in constant contact with Germany without determining a solution.
They check all mechanical components and all were working as designed. They even checked the compressor temperature sensor that shuts down air release from the springs on high temperature. They were at the accepted procedure point where all than could do was begin changing all the parts in the system unit it worked. Considering that this could cost 2 to 3 times the value of the car, the option was not followed. Instead, the air springs where replaced with after market coil springs and the runs well expect for the head light height adjustment alarm that VW could not silence.
SO IN CONCLUSION I HAVE AIR SUSPENSION PARTS AVAILABLE QUITE REASONABLY – PLEASE SEE CLASSIFIEDS. ALSO, PLEASE NOTE THAT AIR IS RELEASED FOR THE SPRINGS VIA THE COMPRESSOR MANIFOLD (OR AT LEAST I THINK SO). SINCE THERE IS ONLY ONE AIR LINE TO EACH AIR SPRING, CAN ANYONE TELL ME HOW THE AIR IS DISCHARED FROM THE AIR SPRING VIA THE INLET CHECK VALVE? VW COULD NOT.