Tightening torques and fluids

Specifications

CABIN AIR FILTER

Service interval:
Replace every 40,000 km or 2 years.

REFRIGERANT

Capacity: Except B200 CDI and B200 Turbo engines: 770 grams.
B200 CDI and B200 Turbo engines: 840 grams.

Recommendation: R 134a.

LUBRICATION

Recommendation: Caltex Capella WF 100. MB 362.0. Suniso 5 GS.

Capacity (cm3): Complete system: 120.

Top-up quantity after loss due to:

• Quick system evacuation: 40.
• Condenser replacement: 20.
• Evaporator replacement: 40.
• Receiver-drier replacement: 10.
• Compressor replacement: 20.
• Suction line replacement: 20.
• High-pressure line replacement: 20.

Tightening torques (daN.m)

Receiver-drier on condenser: 0.6.

Hose on receiver-drier: 0.8.

Hose on compressor: 2.

Hose on condenser: 0.8.

Hose on expansion valve: 0.8.

Compressor bolt: 2.

Pressure switch on condenser: 0.6.

Expansion valve: 0.8.

Wiring diagrams

KEY

See explanations and how to read a diagram in the 'Electrical equipment' chapter.

ABBREVIATIONS

HAU. Automatic heating
KLA. Automatic air conditioning
AKSE. Automatic child seat detection

COMPONENTS

A9. Refrigerant compressor
A31. Heating system power unit
A32. Air conditioning recirculation unit
A32m1. Blower motor
A32n1. Blower regulator
B10/6. Evaporator temperature sensor
B11/12. Dew point sensor
B12. Refrigerant pressure transmitter
B31. Harmful substances sensor
B32. Solar sensor
F55/1. Fuse box 1, 9-way
F55/1f5. Fuse 5
F55/2. Fuse box 2, 9-way
F55/2f10. Fuse 10
F55/9. Fuse box 9
F55/9f71. Fuse 71
M2/6. Regulator, left blend flap
M2/7. Regulator, right blend flap
M2/12. Actuator, rear shut-off flap
M2/14. Actuator, blend air flap
M2/15. Regulator, left and right floor flaps
M2/16. Actuator, left and right defrost flaps
M2/22. Actuator, centre nozzle flap
M16/21. Actuator, fresh air and recirculated air flap
N18. HAU control panel
N18s1. Rear window heater switch
N18s2. Recirculated air switch
N22. KLA control panel
N22b1. Cabin air temperature sensor
N22s1. Rear window heater switch
N22s2. Recirculated air switch
N22/4. Electronic rear blower selector
N22/7. Control panel and control module for KLA comfort
N22/7b1. Cabin air temperature sensor
N22/7s1. Rear window heater switch
N22/7s2. Recirculated air switch
N72/1. Roof switch control module
R22/3. PTC auxiliary heater
S6. Hazard warning switch
S6e1. Airbag OFF indicator lamp, child seat detection
U835. Valid for engine 266
U836. Valid for engine 640
U848. Valid for AKSE child seat detection
W1/1. Ground, cockpit chassis
W1/2. Ground, cockpit
W3/1 Ground, front right wheel arch (ignition coil)
W3/2 Ground, front left wheel arch
W36. Ground, right floor
X14/4. Connector, terminals 50, 61
X30/7 Power distributor connector (CAN)
X64. Blower regulator / cabin wiring harness connector
X122/2. Booster blower connector (air conditioning)
Z6/85. Sensor ground end sleeve 1
Z7/60. 5 V output end sleeve

COLOUR CODES

BK: Black
BN: Brown
BU: Blue
GN: Green
GY: Grey
PK: Pink
RD: Red
TR: Transparent
VT: Violet
WH: White
YE: Yellow

Air conditioning unit

Automatic heating

Thermatic air conditioning control module

Thermatronic air conditioning control module