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Repair manual

Air Conditioning (sedan) Audi A4 B8

Step-by-step instructions on "Air Conditioning (sedan)" for Audi A4 B8 (2007–2012). Pick an article — removal, installation, adjustment and diagnostics with illustrations.

A/C AND REFRIGERANT SAFETY PRECAUTIONS

SAFETY PRECAUTIONS WHEN HANDLING REFRIGERANT

SAFETY PRECAUTIONS WHEN WORKING ON VEHICLES WITH START/STOP SYSTEM

REFRIGERANT CIRCUIT REPAIR

COOLANT CIRCUIT, SERVICING

COOLANT PUMP - ENGINE CODE(S): CAEB

COOLANT PUMP - ENGINE CODE(S): CALA & CCBA

REFRIGERANT CIRCUIT, DRAINING

VEHICLES WITH A/C, PAINTING

CONTACT CORROSION

CAUSES OF ODOR

CAPACITY INFORMATION

CLIMATRONIC CONTROL MODULE J255

CLIMATRONIC CONTROL MODULE ALLOCATION

GLOVE COMPARTMENT COOLING TO AIR INTAKE MANIFOLD CONNECTION

INSTRUMENT PANEL VENT AIR GUIDE PLUG

REAR VENT AIR GUIDE SLOTS, SEALING

REFRIGERANT CIRCUIT O-RINGS

AIR CONDITIONER, LEVERS AND CONNECTING ELEMENTS

A/C SYSTEM EVAPORATOR, CLEANING

A/C SYSTEM, OPERATING AFTER FILLING REFRIGERANT CIRCUIT

A/C COMPRESSOR

A/C SYSTEM CONTROL AND REGULATION COMPONENTS OUTSIDE PASSENGER COMPARTMENT

A/C SYSTEM CONTROL AND REGULATION COMPONENTS INSIDE PASSENGER COMPARTMENT

A/C UNIT AND AIR INTAKE HOUSING COMPONENTS

A/C UNIT AND AIR DISTRIBUTION HOUSING, COMFORT SYSTEM

REFRIGERANT CIRCUIT COMPONENTS OVERVIEW

AIR INTAKE AND OUTLET OPENINGS

AIR DISTRIBUTOR HOUSING DOORS AND PARTITIONS

AIR QUALITY SENSOR G238

AIR ROUTING AND DISTRIBUTION IN PASSENGER COMPARTMENT

AIR ROUTING IN AIR INTAKE HOUSING AND A/C UNIT

A/C COMPRESSOR DRIVE UNIT

A/C CONTROL MOTOR BLOCK DIAGRAM

BACK PRESSURE DOOR

BELT PULLEY

CLIMATRONIC REFRIGERANT SHUT-OFF VALVE

COMPONENTS OUTSIDE PASSENGER COMPARTMENT

COMPONENT GROUP 1

DUST AND POLLEN FILTER WITH ACTIVATED CHARCOAL INSERT

LEFT AND RIGHT RADIATOR HOUSING TEMPERATURE DOORS

PASSENGER COMPARTMENT A/C COMPONENTS

VENTILATION SYSTEM

FASTENER TIGHTENING SPECIFICATIONS

AIR QUALITY SENSOR G238, CHECKING

A/C COMPONENTS CONTROLLED BY OTHER CONTROL MODULES, ELECTRICAL TEST

A/C COMPRESSOR REGULATOR VALVE N280, CHECKING SWITCH-ON SIGNAL

A/C COMPRESSOR REGULATOR VALVE N280, ELECTRICAL TEST

A/C PRESSURE/TEMPERATURE SENSOR G395, CHECKING PRESSURE SIGNAL

A/C UNIT, CHECKING COOLING OUTPUT

REQUIRED COOLING OUTPUT NOT REACHED, MALFUNCTION NOTIFICATION

ICE FORMATION ON EVAPORATOR, LOCALIZING MALFUNCTION

COMPONENTS CONTROLLED BY A/C SYSTEM, ELECTRICAL TEST

DRIVE PLATE WITH OVERLOAD PROTECTION, CHECKING RUN-OUT AND ADJUSTING

FRONT SEAT HEATING AND VENTILATION, CHECKING

HEAT OUTPUT AND TEMPERATURE DOOR ACTIVATION, TESTING REQUIREMENTS

TESTING REQUIREMENTS

HEATING OUTPUT AND TEMPERATURE DOOR ACTIVATION, BASIS CLIMATE CONTROL SYSTEM

HEAT OUTPUT AND TEMPERATURE DOOR ACTIVATION, COMFORT CLIMATE CONTROL SYSTEM

Temperature Increase Downstream from Evaporator, Determining Malfunction

HEATED REAR WINDOW, CHECKING

PASSENGER COMPARTMENT FORCED AIR EXTRACTION, CHECKING

PLENUM CHAMBER WATER DRAIN, CHECKING AND CLEANING

AIR INTAKE DUCT IN AIR INTAKE HOUSING

AUXILIARY AIR HEATER HEATING ELEMENT

A/C PRESSURE/TEMPERATURE SENSOR G395

A/C UNIT

A/C UNIT AIR INTAKE HOUSING

A/C UNIT HEAT EXCHANGER

PREPARING FOR REMOVAL

COMPRESSOR - ENGINE CODE(S): CAEB

COMPRESSOR - ENGINE CODE(S): CALA & CCBA

COMPRESSOR - ENGINE CODE(S): CAUA

A/C COMPRESSOR INPUT SHAFT, LOOSENING AND TIGHTENING

A/C COMPRESSOR INPUT SHAFT

A/C COMPRESSOR DRIVE PLATE

A/C COMPRESSOR ON BRACKET

DRIVE PLATE WITH OVERLOAD PROTECTION

DRIVE PLATE WITH ROLLER BEARING

CONDENSATION WATER DRAIN HOSE

AIRFLOW DOOR V71

CENTER VENT ADJUSTMENT V102

DEFROSTER DOOR V107

LEFT CENTER VENT V110

RIGHT CENTER VENT V111

RECIRCULATION DOOR -V113

RIGHT FOOTWELL DOOR V109

LEFT FOOTWELL DOOR AND FOOTWELL DOOR

LEFT TEMPERATURE DOOR V158

RIGHT TEMPERATURE DOOR V159

LEFT RETAINING PLATE WITH FOOTWELL DOOR V261

LEFT RETAINING PLATE WITH FOOTWELL DOOR V108 AND LEFT CENTER VENT V110

INSTALLING

RIGHT RETAINING PLATE WITH FOOTWELL DOOR V109 AND RIGHT CENTER VENT V111

TEMPERATURE REGULATOR DOOR V68 AND REAR TEMPERATURE DOOR V137

DUST AND POLLEN FILTER

FRESH AIR BLOWER V2

FRESH AIR BLOWER CONTROL MODULE J126

FRESH AIR INTAKE

PREPARATORY WORK

INSTRUMENT PANEL VENTS AND REAR VENTS

INTERIOR TEMPERATURE SENSOR FAN V42

LEFT FOOTWELL VENTS

RIGHT FOOTWELL VENT

LEFT RADIATOR HOUSING WITH TEMPERATURE DOORS

RIGHT RADIATOR HOUSING WITH TEMPERATURE DOORS

RIGHT RADIATOR HOUSING, MOTOR MOUNTING PLATE REMOVED

RIGHT RADIATOR HOUSING AND RIGHT MOTOR MOUNTING PLATE

REFRIGERANT LINES, DISCONNECTING FROM COMPRESSOR

REFRIGERANT LINES, DISCONNECTING FROM COMPRESSOR - ENGINE CODE(S): CALA & CCBA

REFRIGERANT LINES, DISCONNECTING FROM COMPRESSOR - ENGINE CODE(S): CAUA

REFRIGERANT LINES DISCONNECTING FROM QUICK-RELEASE COUPLINGS

CONDENSER

DRYER CARTRIDGE

FLUID RESERVOIR

REFRIGERANT LINES, DISCONNECTING FROM CONDENSER

EVAPORATOR, A/C UNIT INSTALLED

EXPANSION VALVE

REFRIGERANT LINES WITH INNER HEAT EXCHANGER

SUNLIGHT PHOTO SENSOR G107

OUTSIDE AIR G17

LEFT FRONT UPPER BODY OUTLET G385

RIGHT FRONT UPPER BODY OUTLET G386

RIGHT FOOTWELL VENT G262

EVAPORATOR VENT G263

CENTER OUTLET G191

LEFT FOOTWELL OUTLET AND VENT

LEFT RETAINING PLATE WITH FOOTWELL DOOR MOTOR

LEFT RETAINING PLATE WITH FOOTWELL DOOR AND LEFT CENTER VENT MOTORS

RIGHT RETAINING PLATE WITH FOOTWELL DOOR AND RIGHT CENTER VENT MOTORS

A/C SYSTEM, BASIS

A/C SYSTEM, COMFORT

EVAPORATOR HOUSING

SPECIAL TOOLS