Radiator shutter (not MINI)

The DDE control unit opens or closes the radiator shutter depending on the operating range.

The radiator shutter opens at:

• Coolant temperature > 100 °C (closes at < 95 °C)
• Speed > 180 kph (closes at < 140 km/h)
• Speed request for electric fan > 1600 RPM (closes at < 1380 RPM)
• Speed request for electric fan by air conditioning system > 1600 RPM (closes at < 1050 RPM)
• Winter safety function:
  • Window wipers ON and 
  • Speed between 65 km/h and 125 km/h and 
  • Ambient temperature between -8 °C and 2 °C
• Electric fan after-run
• With automatic transmission: transmission temperature > 115 °C (closes at < 110 °C)

During trailer towing, the radiator shutter is permanently opened if the trailer is connected to the trailer module.

The winter safety function prevents the radiator shutter from freezing shut while the vehicle is being driven in wet or snowy conditions.