Dynamic Ride Control (DRC), Draining And Filling: Filling

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NOTE:

The DRC System Consists Of Two Separate Hydraulic Systems. The Central Valves Are Connected Diagonally To The Applicable Shock Absorber.

-- Drain The DRC System As Follows:

Central Valve	Shock Absorber
1 - left	Left front/right rear
2 - right	Right front/left rear

CAUTION:

Extracting, evacuating and filling the DRC line on vehicles with the variable damping may be performed only when the damping setting is set to "COMFORT".
To extract, evacuate and fill the DRC line, start the Fill DRC >>function<< on the Vehicle Diagnostic Tester under address word 14 in "Guided Functions".
If the mode is activated, the system goes into "COMFORT" mode and can no longer be changed manually. The yellow warning lamp in the instrument cluster turns on when filling mode is active.

-- Open the needle valve -B- approximately two turns and let the oil run out of the oil reservoir on the :VAS6544 into the evacuated DRC system.

Courtesy of AUDI OF AMERICA, LLC

Oil flows from the reservoir into the connected DRC system. This is shown by the decreasing oil level in the oil reservoir. Depending on the amount of oil remaining after extraction, the procedure may take several minutes. As the system fills up, the oil level goes down slower. If the level of the oil no longer moves, the first step of the filling process is complete.

-- Close the needle valve -B-.

-- Open the valve -A- and fill the DRC system to 22 bar (319 psi) by pumping the lever on the hand pump -1- several times.

Courtesy of AUDI OF AMERICA, LLC

NOTE:

While Filling, Make Sure The Oil Reservoir On The :VAS6544 Does Not Run Dry; Fill With Reservoir With New Oil If Necessary.

When a pressure of 22 bar (319 psi) is reached, close the valve -A- and do not pump the hand pump lever any more.

NOTE:

Exceeding The Maximum Pressure Of 22 Bar (319 Psi) Does Not Improve The Filling Process. Caution!: There Is A Risk Of Damaging DRC System Components As Well As The :VAS6544 .

If the pressure does not reach 22 bar (319 psi) or if it continually drops, check all connections for damage or leaks. If no issues are found on the outside, the gas reservoir to the pressure clamps on the piston on the inside of the central valve is leaking. Replace the central valve.

-- Open the needle valve -B- slightly and let the pressure drop to 16 bar (232 psi).

Close the valve -B- when the indicator on the pressure manometer reaches the 16 bar (232 psi) marking.

NOTE:

The 16 Bar (232 Psi) Graduation Line On The Scale Is Colored In Green Depending And The Version And Model Of The Pressure Gauge. The Marking Has No Meaning For This Procedure.

DRC System Is Filled.

-- Disconnect the fill line and quick-release fastener on the :VAS6544 -Item ) DYNAMIC RIDE CONTROL (DRC), DRAINING AND FILLING from the rear and front suction/fill valve.

-- Mount the rear wheel.

-- Install the dust cap on the rear and front suction/fill valve.

-- End the Fill DRC >>function<< on the Vehicle Diagnostic Tester on vehicles with variable damping.