Mercedes Benz Workshop Service and Repair Manuals

Service Port HVAC: Locations

A 

High pressure connection

B 

Low pressure connection

B12 

Refrigerant pressure sensor

B12/1 

Refrigerant temperature sensor

M4 

Auxiliary fan

1 

A/C compressor

2 

High pressure line to condenser

3 

Condenser

4 

High pressure line to receiver/dryer

5 

Receiver/dryer

6 

Low pressure line to evaporator

7 

High pressure line to evaporator

8 

Expansion valve

9 

Evaporator