Why is your alarm going off at night and only when it icy or frosty on your Renault megane?

Your alarm may be triggering at night during icy or frosty conditions due to the temperature-sensitive sensors in your Renault Megane. Cold weather can cause minor movements or vibrations, such as from freezing temperatures affecting the door seals or body, which might trigger the alarm. Additionally, moisture from frost can interfere with the sensors, leading to false alarms. It's advisable to check the alarm settings and consider adjusting sensitivity or consulting a professional for a thorough inspection.