Audi A6 Quattro A/C shuts down after two hours on long trips, service department unable to find issue after multiple visits on Audi A6 Quattro

Some Audi A6 Quattro owners report experiencing issues with their A/C system shutting down after two hours on long trips, which may be due to several overlooked factors. Commonly, owners face refrigerant leaks that gradually diminish cooling performance. Additionally, a malfunctioning compressor can lead to inadequate cooling, while a clogged cabin air filter may restrict airflow and reduce efficiency, potentially causing the A/C to shut down. Electrical climate control issues are also reported, where problems with electrical components disrupt the A/C's proper functioning. Furthermore, dirty or clogged condenser or evaporator coils can hinder heat exchange, resulting in poor cooling and shutdowns. Lastly, a dirty or sluggish blower motor can affect airflow, compromising the system's cooling ability. It is crucial for service departments to thoroughly check these components, and if problems persist, owners are advised to seek a second opinion from an Audi specialist for effective diagnosis and resolution.