Problems with air conditioning and heating on BMW x5

Hello Nynoh, it sounds like you might be dealing with a faulty HVAC control module, which is responsible for controlling the heating, ventilation, and air conditioning in your car. However, before jumping to conclusions, I would recommend checking the fuses first. They are usually located in the fuse box under the dashboard or in the engine compartment. If the fuses are fine, then it's likely a more complex issue and you might need to have a mechanic inspect the HVAC control module. Please let us know how it goes or if you have any other questions.