S4 Quattro Sedan V6-2.7L Turbo (APB) (2000)
Housing Assembly HVAC: Service and Repair
Heater/Air Conditioner Assembly, Remove and Install
Heater/Air Conditioner Assembly, Removing and Installing
CAUTION!
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Obtain security code for anti-theft radio.
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Note customer's pre-set radio stations.
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Move power seats to most rearward position.
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Switch off ignition and disconnect battery ground (GND) strap.
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Release pressure in coolant system by opening cap at coolant expansion tank.
WARNING!
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With hot engine, cooling system is under pressure.
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Coolant expansion tank cap must be removed slowly.
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Dispose of used coolant properly. Check local regulations.
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Do not re-use used coolant.
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Clamp coolant hoses -A- and -B- with VAG3094 (or equivalent) and remove from heater core inlet/outlet.
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Place catch basin below heater core connection -A- and carefully blow coolant out of heater core with compressed air through connection -B-.
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Remove boot -C-.
CAUTION!
A/C refrigerant system must be discharged before removing heater/air conditioner assembly.
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Discharge refrigerant system.
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Remove bolt -A-.