If it takes at least 2 miles for your car's air conditioning (AC) to start working, there could be a few possible reasons for this issue:
Warm-Up Time: Some vehicles have a feature where the AC compressor is intentionally delayed during the initial startup to allow the engine to warm up. This is done to reduce the load on the engine and improve fuel efficiency. Once the engine reaches an optimal operating temperature, the AC will start working.
System Design: The AC system in your car may have a delay built into its operation. This delay could be intentional, as mentioned above, or it might be a result of the system's design. Some AC systems have a time delay to prevent the compressor from cycling too frequently, which can put stress on the system.
Low Refrigerant: If your car's AC system has a refrigerant leak or is low on refrigerant, it may take some time for the system to build up enough pressure to engage the compressor. Once the refrigerant pressure reaches the required level, the AC will start working.
Faulty AC Components: There could be issues with AC components such as sensors, switches, or relays that are causing the delay in the AC's operation. Faulty components may not send the right signals to start the compressor immediately.
Electrical Issues: Electrical problems in the car's AC system can also lead to delays in the AC's operation. Loose connections or faulty wiring can interfere with the proper functioning of the AC.
If you're experiencing this issue with your car's AC, it's a good idea to have it checked by a qualified mechanic or an automotive technician. They can diagnose the problem and determine the exact cause of the delay. Regular maintenance and timely repairs can help ensure that your car's AC system operates efficiently and provides the cooling you need during your drives.