Heating, air conditioner

Kapitelübersicht

• 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 high-voltage system
  2
• 1.5 Safety precautions when working in the vicinity of high-voltage components
  3
• 1.6 Safety precautions when working on the cooling system
  3
• 1.7 Safety precautions for working on vehicles with auxiliary/supplementary heater
  4
• 2 Identification
  5
• 2.1 Identification of heater and air conditioning unit
  5
• 3 General information
  7
• 3.1 Notes concerning odours in air conditioned vehicles
  7
• 3.2 Notes for vehicles with start-stop system
  7
• 3.3 Type plates
  8
• 4 Repair notes
  11
• 4.1 Working on refrigerant circuit
  11
• 4.2 General repair instructions
  11
• 4.3 Refrigerant circuit seals
  11
• 4.4 Checking heater output
  12
• 4.5 Checking cooling output
  35
• 5 Technical data
  65
• 5.1 Refrigerant capacity
  65
• 5.2 Refrigerant oil capacities
  65
• 5.3 Oil distribution
  66
• Heating
  67
• 1 Overview of fitting locations - heating
  67
• 1.1 Overview of fitting locations - components not located in passenger compartment
  67
• 2 Control motors
  74
• 2.1 Overview of fitting locations – control motors at front
  74
• 3 Heater
  76
• 3.1 Assembly overview – heater unit
  76
• 4 Air duct
  82
• 5 Operating and display unit
  83
• 5.1 Overview of operating and display unit
  83
• 5.2 Removing and installing operating and display unit
  85
• 6 Other controlling and regulating components
  86
• Air conditioning system
  87
• 1 Overview of fitting locations - air conditioning system
  87
• 1.1 Overview of fitting locations - components not located in passenger compartment
  87
• 2 Refrigerant circuit
  101
• 2.1 System overview - refrigerant circuit
  101
• 2.2 Assembly overview – condenser
  108
• 2.3 Removing and installing refrigerant circuit pressure sender G805
  110
• 2.4 Removing and installing expansion valve
  112
• 2.5 Removing and installing condenser
  120
• 2.6 Removing and installing desiccant bag or cartridge
  123
• 2.7 Removing and installing damper weight for refrigerant line, low-pressure side
  132
• 2.9 Removing and installing refrigerant pressure and temperature sender G395
  136
• 2.12 Removing and installing heat exchanger for high-voltage battery
  144
• 2.13 Removing and installing refrigerant line with internal heat exchanger
  149
• 2.14 Refrigerant line with restrictor
  156
• 2.15 Removing and installing refrigerant line between condenser and evaporator
  157
• 2.18 Commissioning air conditioning system after filling refrigerant circuit
  165
• 3 Air conditioner compressor
  166
• 3.1 Assembly overview – drive unit of air conditioner compressor
  166
• 3.2 Assembly overview - pulley
  172
• 3.3 Removing air conditioning compressor from and installing on bracket
  179
• 3.4 Removing and installing air conditioner compressor
  183
• 3.5 Removing and installing high-voltage system fuse 3 S353
  191
• 3.6 Checking high-pressure safety valve on air conditioner compressor
  192
• 3.7 Removing and installing pulley
  193
• 4 Control motors
  202
• 4.1 Overview of fitting locations – control motors at front
  202
• 4.4 Removing and installing air recirculation flap control motor V113
  214
• 4.10 Removing and installing air distribution flap actuator
  240
• 5 Front heater and air conditioning unit
  247
• 5.1 Assembly overview – heater and air conditioning unit
  247
• 5.3 Assembly overview – evaporator housing
  257
• 5.4 Assembly overview - flaps and partitions in air distribution housing
  259
• 5.5 Removing and installing heater and air conditioning unit
  262
• 5.6 Dismantling and assembling heater and air conditioning unit
  268
• 5.7 Removing and installing air distribution housing
  270
• 5.8 Removing and installing holder for heater and air conditioning unit
  271
• 5.9 Removing and installing evaporator
  273
• 5.10 Removing and installing fresh air blower control unit J126
  275
• 5.11 Removing and installing dust and pollen filter
  276
• 5.12 Removing and installing fresh air blower V2
  280
• 5.15 Removing and installing heat exchanger
  288
• 5.16 Removing and installing coolant pipes on heat exchanger
  311
• 5.17 Removing and installing evaporator temperature sensor G308
  315
• 5.18 Checking condensation drain
  317
• 5.19 Removing and installing condensation drain
  318
• 5.20 Removing and installing baffle plate
  323
• 6 Air duct
  324
• 6.1 Assembly overview – air duct and air distribution in passenger compartment
  324
• 6.2 Removing and installing fresh air intake
  325
• 6.3 Removing and installing cover for fresh air intake
  328
• 6.4 Removing and installing air intake duct
  329
• 6.5 Removing and installing driver side footwell vents
  331
• 6.6 Removing and installing front passenger side footwell vents
  332
• 6.7 Removing and installing rear footwell vent
  334
• 6.8 Removing and installing air duct for rear centre console vent
  336
• 6.9 Checking forced ventilation for passenger compartment
  336
• 6.10 Removing and installing forced ventilation for passenger compartment
  337
• 6.11 Removing and installing air duct for defroster vent
  339
• 6.12 Removing and installing air duct for centre vent
  340
• 7 Coolant circuit
  341
• 7.1 Incorporation of high-voltage heater (PTC) Z115 into coolant circuit
  341
• 7.3 Removing and installing coolant valve for high-voltage battery N688
  347
• 7.4 Removing and installing coolant valve for high-voltage battery V590
  349
• 8 Operating and display unit
  357
• 8.1 Overview of fitting locations – operating and display unit
  357
• 8.2 Removing and installing operating and display unit
  361
• 9 Other controlling and regulating components
  364
• 9.1 Removing and installing sunlight penetration photosensor G107
  364
• 9.2 Removing and installing air quality sensor G238
  365
• 9.3 Working principles of air quality sensor G238
  367
• 9.4 Removing and installing ambient temperature sensor G17
  368
• 9.5 Removing and installing humidity sender for air conditioning system G260
  370
• 9.6 Removing and installing left vent temperature sender G150
  370
• 9.7 Removing and installing right vent temperature sender G151
  371
• 9.8 Removing and installing footwell vent temperature sender G192
  373