RS 4 Quattro Sedan V8-4.2L (BNS) (2007)
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Clamp off coolant hose - 2 - using Hose Clamps Up to 25 mm Diameter (3094) and disconnect from coolant expansion tank.
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Seal the connection using a plug that fits.
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Remove coolant expansion tank - arrow -.
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Disconnect electrical wire from Engine Coolant Level (ECL) Warning Switch (F66) at bottom on coolant reservoir and set aside coolant reservoir
with coolant hose - 1 - connected.
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Remove oil dipstick - 1 - from guide tube.
