Cooling System (Mechanical)

• Repair Instructions
  • Coolant freezing point and level
    • Notes
    • Checks
  • Test pressurizing the cooling system
    • Checks
  • Radiator
    • To remove
    • To fit
  • Fan cowling
    • To remove
    • To fit
  • Fan cowling, dual radiator fans
    • To remove
    • To fit
  • Bleeding the cooling system
    • Bleeding
  • Bleeding the cooling system when working with the oil cooler
    • Bleeding
  • Engine, cooling fan
    • To remove
    • To fit
  • Expansion tank
    • Notes
    • To remove
    • To fit
  • Radiator fan relay unit (706)
    • To remove
    • To fit
  • Thermostat
    • To remove
    • To fit
  • Coolant pump
    • To remove
    • To fit
  • Upper radiator hose
    • To remove
    • To fit
  • Procedure after disconnecting the battery
  • Fluid-cooled oil cooler
    • To remove
    • To fit
  • Charge air cooler
    • To remove
    • To fit
  • Lower mounting, radiator
    • Change
  • Draining, cooling system
• Description and operation
  • Main components, cooling system
  • Brief description, cooling system
    • Description
  • Main components, radiator fan system
    • Notes
    • Components
  • Detailed description, radiator fans
    • Radiator fan logic
    • Operation with ignition ON
    • Idle speed compensation
    • Current consumption
    • Operation with ignition OFF
  • Coolant temperature
  • Radiator fan motor (37LH, 37RH)
    • Location
    • Main task
    • Type
    • Connection
  • Coolant temperature sensor (202), T8
    • Location
    • Main task
    • Type
    • Connection
  • Coolant level switch (242)
    • Location
    • Main task
    • Type
    • Connection
    • Function
  • Relay unit, radiator fans (706a), B207 with two radiator fans
    • Location
    • Main task
    • Type
    • Connection
  • Radiator fan relay unit (706b), B207 with one radiator fan
    • Location
    • Main task
    • Type
    • Connection
• Component Locator
  • Radiator fan motor (37)
  • Left radiator fan motor (37LH)
  • Right radiator fan motor (37RH)
  • Coolant temperature sensor (202)
    • Notes
    • B207
    • Z18XE
    • B284
    • Z19DT
    • Z19DTH/DTR
  • Automatic Climate Control (216)
  • Motor, fuel pump, auxiliary/parking heater (323a)
    • Petrol
    • Diesel
  • Engine bay electrical center 342 (UEC)
    • Location
    • Main task
    • Type
    • Connect
    • Fuses
    • Relays
  • Fuse 19, engine bay main fuse box 342
    • Notes
    • List of components
  • Fuses 35 and 36, underhood electrical center 342, maxi fuse
    • Notes
    • List of components
  • Control module, Trionic, B207, switch A (589A)
  • Control module, Trionic, B207, switch B (589B)
  • Auxiliary/parking heater (597)
  • Relay unit, radiator fans (706a)
  • Radiator fan relay unit (706b)
  • Accessory connector (711)
  • Crimp connection J1, front harness
    • Notes
    • List of components
  • Crimp J2, front harness
    • Notes
    • List of components
  • Crimp J170, parking heater wiring harness
    • Notes
    • List of components
  • Crimp J171, parking heater wiring harness
    • Notes
    • List of components
  • Grounding point G30A
    • Notes
    • Connected components
  • Grounding point G30B
    • Notes
    • Connected components
• Specifications
  • Tightening torque
    • Power train
  • Coolant
  • Cooling system
  • Radiator fan motor (37), B207
  • Radiator fan motor (37LH, 37RH), B207
  • Relay unit, radiator fan (706a), B207
    • Notes
    • Current values
  • Radiator fan relay unit (706b), B207
    • Notes
    • Current values
• Special Tools and Equipment
  • 30 05 469 Adapter, cooling system tester
  • 30 05 477 Cooling system tester
  • 32 025 077 Fluid tester
  • 83 95 212 Strap
  • 83 96 095 Release tool, belt circuit B207E/L
  • 83 96 103 Holding tool for changing water pump, B207
  • 83 96 160 Pressure test adapter, cooling system, B207
  • 87 92 806 Removal tool, oil pipe, automatic transmission
  • 30 14 883 Pressure/vacuum pump
• Schematic and Routing Diagrams