Audi RS4 AC Failure: Compressor vs Refrigerant Leak Fix

Last month had a similar auto AC repair situation with my 2020 Audi RS5. The symptoms matched exactly, intermittent cooling system operation, warning lights, and complete HVAC failure at times. Initial diagnosis suggested a refrigerant leak, but the actual problem was more complex. The AC control unit had failed, causing erratic compressor engagement. The AC compressor itself was fine, but the control module was unable to properly regulate the system. The repair required: Full diagnostic scan, AC control unit replacement, System recalibration, Complete automotive cooling system test This turned out to be a serious issue requiring specialized Audi diagnostic equipment. A standard refrigerant leak check would not have identified the root cause. The control unit failure could have eventually damaged other components if left unaddressed. Would strongly recommend getting a second opinion from a certified Audi specialist who can properly diagnose the control systems. While refrigerant leaks are common, the symptoms point to potential electronic control issues rather than just low auto refrigerant.

Last month had a similar auto AC repair situation with my 2020 Audi RS5. The symptoms matched exactly, intermittent cooling system operation, warning lights, and complete HVAC failure at times. Initial diagnosis suggested a refrigerant leak, but the actual problem was more complex. The AC control unit had failed, causing erratic compressor engagement. The AC compressor itself was fine, but the control module was unable to properly regulate the system. The repair required: Full diagnostic scan, AC control unit replacement, System recalibration, Complete automotive cooling system test This turned out to be a serious issue requiring specialized Audi diagnostic equipment. A standard refrigerant leak check would not have identified the root cause. The control unit failure could have eventually damaged other components if left unaddressed. Would strongly recommend getting a second opinion from a certified Audi specialist who can properly diagnose the control systems. While refrigerant leaks are common, the symptoms point to potential electronic control issues rather than just low auto refrigerant.

Last month had a similar auto AC repair situation with my 2020 Audi RS5. The symptoms matched exactly, intermittent cooling system operation, warning lights, and complete HVAC failure at times. Initial diagnosis suggested a refrigerant leak, but the actual problem was more complex. The AC control unit had failed, causing erratic compressor engagement. The AC compressor itself was fine, but the control module was unable to properly regulate the system. The repair required: Full diagnostic scan, AC control unit replacement, System recalibration, Complete automotive cooling system test This turned out to be a serious issue requiring specialized Audi diagnostic equipment. A standard refrigerant leak check would not have identified the root cause. The control unit failure could have eventually damaged other components if left unaddressed. Would strongly recommend getting a second opinion from a certified Audi specialist who can properly diagnose the control systems. While refrigerant leaks are common, the symptoms point to potential electronic control issues rather than just low auto refrigerant.

Last month had a similar auto AC repair situation with my 2020 Audi RS5. The symptoms matched exactly, intermittent cooling system operation, warning lights, and complete HVAC failure at times. Initial diagnosis suggested a refrigerant leak, but the actual problem was more complex. The AC control unit had failed, causing erratic compressor engagement. The AC compressor itself was fine, but the control module was unable to properly regulate the system. The repair required: Full diagnostic scan, AC control unit replacement, System recalibration, Complete automotive cooling system test This turned out to be a serious issue requiring specialized Audi diagnostic equipment. A standard refrigerant leak check would not have identified the root cause. The control unit failure could have eventually damaged other components if left unaddressed. Would strongly recommend getting a second opinion from a certified Audi specialist who can properly diagnose the control systems. While refrigerant leaks are common, the symptoms point to potential electronic control issues rather than just low auto refrigerant.

Thanks for sharing your AC unit issues experience. This matches my situation closely, I also thought it was just a simple refrigerant leak at first. After getting it properly diagnosed at a specialist, turned out the control module needed replacement plus some additional work. Did your repair hold up well since then? Just wondering if any other cooling system problems came up after fixing the control unit. Also, could you share what the final cost was for your auto AC repair? Would help me get an idea of what to expect.

Thanks for sharing your AC unit issues experience. This matches my situation closely, I also thought it was just a simple refrigerant leak at first. After getting it properly diagnosed at a specialist, turned out the control module needed replacement plus some additional work. Did your repair hold up well since then? Just wondering if any other cooling system problems came up after fixing the control unit. Also, could you share what the final cost was for your auto AC repair? Would help me get an idea of what to expect.

Thanks for sharing your AC unit issues experience. This matches my situation closely, I also thought it was just a simple refrigerant leak at first. After getting it properly diagnosed at a specialist, turned out the control module needed replacement plus some additional work. Did your repair hold up well since then? Just wondering if any other cooling system problems came up after fixing the control unit. Also, could you share what the final cost was for your auto AC repair? Would help me get an idea of what to expect.

Thanks for sharing your AC unit issues experience. This matches my situation closely, I also thought it was just a simple refrigerant leak at first. After getting it properly diagnosed at a specialist, turned out the control module needed replacement plus some additional work. Did your repair hold up well since then? Just wondering if any other cooling system problems came up after fixing the control unit. Also, could you share what the final cost was for your auto AC repair? Would help me get an idea of what to expect.

Since getting the AC compressor and control unit fixed, the vehicle HVAC system has worked flawlessly. The repair cost totaled 980 Euro, which covered the replacement of the defective AC control unit and full system testing. The specialist confirmed it was not a simple refrigerant leak as initially suspected. They did a thorough diagnostic check to ensure no other components were damaged from the malfunctioning control module. The cooling performance is now back to factory specifications and running consistently. No additional issues have emerged in the months following the repair. The AC unit maintains steady temperatures and the compressor engages smoothly without any warning lights or error codes. Getting the proper diagnosis from a qualified specialist was key to resolving the root cause rather than just treating symptoms. The investment in fixing it properly the first time helped avoid potential cascade failures that could have occurred if the faulty control unit had been left unaddressed.

Since getting the AC compressor and control unit fixed, the vehicle HVAC system has worked flawlessly. The repair cost totaled 980 Euro, which covered the replacement of the defective AC control unit and full system testing. The specialist confirmed it was not a simple refrigerant leak as initially suspected. They did a thorough diagnostic check to ensure no other components were damaged from the malfunctioning control module. The cooling performance is now back to factory specifications and running consistently. No additional issues have emerged in the months following the repair. The AC unit maintains steady temperatures and the compressor engages smoothly without any warning lights or error codes. Getting the proper diagnosis from a qualified specialist was key to resolving the root cause rather than just treating symptoms. The investment in fixing it properly the first time helped avoid potential cascade failures that could have occurred if the faulty control unit had been left unaddressed.

Since getting the AC compressor and control unit fixed, the vehicle HVAC system has worked flawlessly. The repair cost totaled 980 Euro, which covered the replacement of the defective AC control unit and full system testing. The specialist confirmed it was not a simple refrigerant leak as initially suspected. They did a thorough diagnostic check to ensure no other components were damaged from the malfunctioning control module. The cooling performance is now back to factory specifications and running consistently. No additional issues have emerged in the months following the repair. The AC unit maintains steady temperatures and the compressor engages smoothly without any warning lights or error codes. Getting the proper diagnosis from a qualified specialist was key to resolving the root cause rather than just treating symptoms. The investment in fixing it properly the first time helped avoid potential cascade failures that could have occurred if the faulty control unit had been left unaddressed.

Since getting the AC compressor and control unit fixed, the vehicle HVAC system has worked flawlessly. The repair cost totaled 980 Euro, which covered the replacement of the defective AC control unit and full system testing. The specialist confirmed it was not a simple refrigerant leak as initially suspected. They did a thorough diagnostic check to ensure no other components were damaged from the malfunctioning control module. The cooling performance is now back to factory specifications and running consistently. No additional issues have emerged in the months following the repair. The AC unit maintains steady temperatures and the compressor engages smoothly without any warning lights or error codes. Getting the proper diagnosis from a qualified specialist was key to resolving the root cause rather than just treating symptoms. The investment in fixing it properly the first time helped avoid potential cascade failures that could have occurred if the faulty control unit had been left unaddressed.

Took your advice and got the second opinion from a certified specialist, really glad I did. The proper diagnosis showed my AC control module was shot, not just a basic refrigerant leak like the first shop claimed. Total repair came to 1150 Euro including parts and labor. Had them do a complete cooling system inspection while they were at it. The AC compressor itself checked out fine, but they found some minor wiring issues that could have caused bigger problems later. The HVAC system now works perfectly, no more warning lights or intermittent failures. Been driving it for about 2 weeks since the air conditioning repair and everything runs great. Even in heavy traffic the cooling stays consistent. Definitely worth paying a bit more to get it fixed right by someone who really knows these systems.

Took your advice and got the second opinion from a certified specialist, really glad I did. The proper diagnosis showed my AC control module was shot, not just a basic refrigerant leak like the first shop claimed. Total repair came to 1150 Euro including parts and labor. Had them do a complete cooling system inspection while they were at it. The AC compressor itself checked out fine, but they found some minor wiring issues that could have caused bigger problems later. The HVAC system now works perfectly, no more warning lights or intermittent failures. Been driving it for about 2 weeks since the air conditioning repair and everything runs great. Even in heavy traffic the cooling stays consistent. Definitely worth paying a bit more to get it fixed right by someone who really knows these systems.

Took your advice and got the second opinion from a certified specialist, really glad I did. The proper diagnosis showed my AC control module was shot, not just a basic refrigerant leak like the first shop claimed. Total repair came to 1150 Euro including parts and labor. Had them do a complete cooling system inspection while they were at it. The AC compressor itself checked out fine, but they found some minor wiring issues that could have caused bigger problems later. The HVAC system now works perfectly, no more warning lights or intermittent failures. Been driving it for about 2 weeks since the air conditioning repair and everything runs great. Even in heavy traffic the cooling stays consistent. Definitely worth paying a bit more to get it fixed right by someone who really knows these systems.

Took your advice and got the second opinion from a certified specialist, really glad I did. The proper diagnosis showed my AC control module was shot, not just a basic refrigerant leak like the first shop claimed. Total repair came to 1150 Euro including parts and labor. Had them do a complete cooling system inspection while they were at it. The AC compressor itself checked out fine, but they found some minor wiring issues that could have caused bigger problems later. The HVAC system now works perfectly, no more warning lights or intermittent failures. Been driving it for about 2 weeks since the air conditioning repair and everything runs great. Even in heavy traffic the cooling stays consistent. Definitely worth paying a bit more to get it fixed right by someone who really knows these systems.