1. Coolant Level: If the coolant level in your vehicle is too low, it can cause the coolant temperature sensor to malfunction, which can lead to inaccurate readings on the digital display and the AC shutting down as a safety measure to protect the engine from overheating. Check the coolant level in the overflow tank and add more if necessary.
2. Coolant Temperature Sensor: If the coolant temperature sensor itself is faulty, it can send incorrect signals to the engine control module (ECM), which can cause the digital coolant numbers to go off and the AC to shut down. You may need to replace the coolant temperature sensor.
3. Electrical Issues: If there are any loose or damaged electrical connections related to the coolant temperature sensor or the AC system, it can cause problems with the digital display and the AC functionality. Check the electrical connections and make sure they are secure and free of corrosion.
4. ECM Issues: In some cases, a faulty ECM can cause problems with the digital coolant display and the AC system. If the ECM is not receiving the correct signals from the coolant temperature sensor, it may not be able to accurately control the engine's temperature or the AC system. You may need to have the ECM diagnosed and repaired or replaced if necessary.
If you are not comfortable performing these checks or repairs yourself, it's best to take your vehicle to a qualified mechanic for proper diagnosis and repair.
