Under what circumstances does the BMW grille open automatically?

[HaydenLynn]

When the air conditioning is set to maximum cooling with both temperature and fan speed at their highest, the BMW 5 Series grille will open automatically. The grille remains closed when the air conditioning cooling function is not in use. More details are as follows: 1. Automatic adjustment principle: The BMW grille can automatically adjust its opening degree based on actual conditions. The ability to control the opening and closing of the grille means it can regulate air intake and heat dissipation. For example, when starting the vehicle in cold winter, the grille remains closed, allowing the engine temperature to rise faster, which enhances the car's performance in winter. 2. High temperature conditions: When the engine temperature is relatively high, the front grille will open automatically to facilitate heat dissipation. This means the active grille system resolves the conflict between summer cooling and winter insulation.