Air conditioning pressure sensor, compatible with W169 W176 W245 W246, A/C state pressure sensor, A/C pressure switch sensor 2205420118 Benefits - Provides reliable measurements and precise pressure readings to ensure normal operation and prevent damage; heat resistant and rust-proof. Function - Prevents the cooling system from operating under extreme pressure in the refrigerant line and helps regulate the engine cooling fan speed. - The A/C pressure sensor automatically adjusts the A/C temperature to the vehicle temperature, delivering a balanced performance and reduced fuel consumption and emissions. Installation - Easy to install without special tools; simple to use and saves time and energy. Use cases - Replacing a worn or faulty sensor on W169 W176 W245 W246 to restore accurate pressure sensing and A/C reliability. - In hot climates or during heavy A/C use to maintain cabin comfort while protecting the system and reducing load on the engine. - Routine maintenance or retrofit to improve A/C efficiency and contribute to lower fuel use and emissions.