S4 Quattro Wagon V8-4.2L (BHF) (2008)
Power Steering Fluid: Service and Repair
Power steering fluid level, checking
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Do not run engine and turn front wheels to straight ahead position.
Cold oil (exterior temperature approx. +20 degrees C)
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Remove cap.
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Wipe dipstick off with a clean cloth.
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Screw cap on hand-tight and remove again.
The cap must be fully screwed in order to obtain an accurate fluid level reading.
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Check fluid level: Oil level must be in "MAX" marking area.
Warm oil (Oil temperature +80 degrees C)
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Check fluid level: Oil level must be 10 mm above "MAX" marking.
Note:
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Fluid must be drawn off if the level is above the specified range.
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If oil level is below aforementioned area, then the hydraulic system must be checked for leaks. It is not sufficient to merely top off the fluid.
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Do not use drained hydraulic oil.