Heating, air conditioner

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety precautions when working on air conditioning systems
  1
• 1.2 Safety precautions when handling refrigerants
  1
• 1.3 Safety measures when working on vehicles with a start/stop system
  2
• 1.4 Safety precautions when working on the cooling system
  2
• 1.5 Safety precautions for working on vehicles with auxiliary/supplementary heater
  2
• 2 Identification
  4
• 2.1 Identification of heater and air conditioning unit
  4
• 3 General information
  6
• 3.1 Notes for vehicles with start-stop system
  6
• 3.2 Type plates
  6
• 4 Repair notes
  10
• 4.1 Working on refrigerant circuit
  10
• 4.2 General repair instructions
  10
• 4.3 Refrigerant circuit seals
  10
• 5 Technical data
  12
• 5.1 Refrigerant capacity
  12
• 5.2 Refrigerant oil capacities
  12
• 5.3 Oil distribution
  13
• Heating
  14
• 1 Overview of fitting locations - heating
  14
• 1.1 Overview of fitting locations - components not located in passenger compartment
  14
• 2 Control motors
  16
• 2.1 Overview of fitting locations – control motors at front
  16
• 2.3 Removing and installing air recirculation flap control motor V113
  18
• 3 Heater
  19
• 3.1 Assembly overview – heater unit
  19
• 3.2 Removing and installing fresh air blower V2
  24
• 3.3 Removing and installing fresh air blower control unit J126
  24
• 3.4 Removing and installing dust and pollen filter
  24
• 3.5 Removing and installing heater unit
  24
• 3.6 Dismantling and assembling heater unit
  24
• 3.9 Removing and installing heat exchanger
  24
• 3.10 Removing and installing baffle plate
  24
• 4 Air duct
  25
• 4.1 Assembly overview – air duct and air distribution in passenger compartment
  25
• 4.2 Removing and installing driver side footwell vents
  25
• 4.3 Removing and installing front passenger side footwell vents
  25
• 4.4 Removing and installing rear footwell vent
  25
• 4.5 Removing and installing fresh air intake
  25
• 4.6 Removing and installing cover for fresh air intake
  25
• 4.7 Removing and installing air intake duct
  25
• 4.8 Checking forced ventilation for passenger compartment
  26
• 4.9 Removing and installing forced ventilation for passenger compartment
  26
• 4.10 Removing and installing air duct for defroster vent
  26
• 4.11 Removing and installing air duct for centre vent
  26
• 5 Operating and display unit
  27
• 5.1 Overview of operating and display unit
  27
• 5.2 Removing and installing operating and display unit
  29
• 6 Other controlling and regulating components
  30
• 6.1 Removing and installing ambient temperature sensor G17
  30
• Air conditioning system
  31
• 1 Overview of fitting locations - air conditioning system
  31
• 1.1 Overview of fitting locations - components not located in passenger compartment
  31
• 2 Refrigerant circuit
  36
• 2.1 System overview - refrigerant circuit
  36
• 2.2 Assembly overview – condenser
  38
• 2.3 Removing and installing refrigerant circuit pressure sender G805
  40
• 2.4 Removing and installing expansion valve
  42
• 2.5 Removing and installing condenser
  45
• 2.6 Removing and installing desiccant bag or cartridge
  48
• 2.7 Removing and installing refrigerant line with internal heat exchanger
  58
• 2.8 Removing and installing damper weight for refrigerant line, low-pressure side
  61
• 2.10 Removing and installing refrigerant line between condenser and evaporator
  64
• 2.13 Commissioning air conditioning system after filling refrigerant circuit
  72
• 3 Air conditioner compressor
  73
• 3.1 Assembly overview – drive unit of air conditioner compressor
  73
• 3.2 Assembly overview - pulley
  77
• 3.3 Removing air conditioning compressor from and installing on bracket
  84
• 3.4 Removing and installing air conditioner compressor
  86
• 3.5 Checking high-pressure safety valve on air conditioner compressor
  91
• 3.6 Removing and installing pulley
  92
• 4 Control motors
  101
• 4.1 Overview of fitting locations – control motors at front
  101
• 4.4 Removing and installing air recirculation flap control motor V113
  114
• 4.7 Removing and installing rear temperature flap control motor V137
  126
• 4.11 Removing and installing air distribution flap actuator
  141
• 5 Front heater and air conditioning unit
  148
• 5.1 Assembly overview – heater and air conditioning unit
  148
• 5.3 Assembly overview – evaporator housing
  156
• 5.4 Assembly overview - flaps and partitions in air distribution housing
  157
• 5.5 Removing and installing heater and air conditioning unit
  160
• 5.6 Dismantling and assembling heater and air conditioning unit
  165
• 5.7 Removing and installing air distribution housing
  166
• 5.8 Removing and installing holder for heater and air conditioning unit
  167
• 5.9 Removing and installing evaporator
  169
• 5.10 Removing and installing fresh air blower control unit J126
  170
• 5.11 Removing and installing dust and pollen filter
  172
• 5.12 Removing and installing fresh air blower V2
  176
• 5.15 Removing and installing heat exchanger
  183
• 5.16 Removing and installing coolant pipes on heat exchanger
  203
• 5.17 Removing and installing evaporator temperature sensor G308
  207
• 5.18 Checking condensation drain
  209
• 5.19 Removing and installing condensation drain
  211
• 5.20 Removing and installing baffle plate
  215
• 6 Air duct
  216
• 6.1 Assembly overview – air duct and air distribution in passenger compartment
  216
• 6.2 Removing and installing fresh air intake
  217
• 6.3 Removing and installing cover for fresh air intake
  219
• 6.4 Removing and installing air intake duct
  220
• 6.5 Removing and installing driver side footwell vents
  221
• 6.6 Removing and installing front passenger side footwell vents
  223
• 6.7 Removing and installing rear footwell vent
  224
• 6.8 Removing and installing air duct for rear centre console vent
  225
• 6.9 Removing and installing air duct for rear vent
  226
• 6.10 Checking forced ventilation for passenger compartment
  227
• 6.11 Removing and installing forced ventilation for passenger compartment
  227
• 6.12 Removing and installing air duct for defroster vent
  228
• 6.13 Removing and installing air duct for centre vent
  229
• 7 Operating and display unit
  231
• 7.1 Overview of operating and display unit
  231
• 7.2 Removing and installing operating and display unit
  236
• 8 Other controlling and regulating components
  240
• 8.1 Removing and installing sunlight penetration photosensor G107
  240
• 8.2 Removing and installing air quality sensor G238
  241
• 8.3 Removing and installing ambient temperature sensor G17
  243
• 8.4 Removing and installing humidity sender for air conditioning system G260
  243
• 8.5 Removing and installing left vent temperature sender G150
  244
• 8.6 Removing and installing right vent temperature sender G151
  246
• 8.7 Removing and installing rear vent temperature sender G174
  249
• 8.8 Removing and installing footwell vent temperature sender G192
  249