This is a Technical Journal: *Added VST Operation No. If the vehicle is equipped with air suspension and if customer is complaining over a knock/rattle/clatter noise from the front suspension when driving on roughroads or over a road hump, then follow the advice under Service. Note: Vehicles with Air suspension can be identified by the following VDN code: RI03 Service: Too high tire pressure could produce noise that could be misinterpreted as noise from the front air suspension system. First ensure that the tire pressure is matching the Correct tire pressure, refer to the Tire Label (located in left side B-pillar) or Owners Manual. It is required that workshop test drive the vehicle with Correct tire pressure in order to verify the customers complaints regarding unacceptable noise from the front suspension. If the noise is confirmed, replace front shock absorbers according to TJ Instruction VCC-503532-2 (see also movie, special tool 9997644_v3.mp4) and perform a SUM upgrade. Note:The Hose coupling (31429025) should be used as a tool when filling the shock absorber during reassembly, should be reused.
