S4 V8-4.2L (BHF) (2004)
Power Steering Fluid: Testing and Inspection
Power steering fluid level, checking
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Do not start engine but bring front wheels to straight-ahead position.
When fluid is cold:
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Remove filler cap.
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Wipe dipstick with a clean cloth.
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Screw filler cap on hand tight and unscrew again.
Note:
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The cap must be fully screwed on in order to obtain an accurate fluid level reading.
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Check fluid level: The fluid level should be on or around the MIN. marking (up to 2 mm above or below the mark).
Fluid at operating temperature (above approximately 50°C):
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Check fluid level: The fluid level should be between the MIN. and MAX. marks.
Note:
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Excess fluid must be drained off if the level is above the specified range.
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If the fluid level is below the range specified, the hydraulic system must be checked for leaks. In this case, it is not sufficient to merely top off
the fluid.
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Do not re-use hydraulic fluid which has been drained off.