Low maintenance doesn't mean *no* maintenance. Feel free to ask us about anything related to your vehicle, it's our job to keep you on the road, running safely and efficiently!
Air conditioning. Does your air conditioning system still keep your car cool on hot days? Does your defogger and defroster still keep your windshield clear on cold or humid days? Modern air conditioning systems require much less maintenance than systems of old. Seals are longer lived, and compressors are designed to last a long time. Despite how much better these systems perform, they still require periodic maintenance. If declining performance is addressed immediately, expensive repairs can often be avoided.
Declining air conditioning performance is usually a sign of a loss of refrigerant, which should be corrected immediately. One of the reasons air conditioning systems last so long now is that they are perfectly sealed, so no contaminants ever enter the system. If the pressure in the system is allowed to go to zero, the same defect that let all the refrigerant out will also draw contaminants back in as the engine compartment heat cycles. Long term contamination in an AC system is usually catastrophic and expensive, requiring replacement of most of the system.
Other reasons for reduced performance are slipping belts, damaged or obstructed heat exchanger (condenser or evaporator), clogged compressor lubricant filter, failing refrigerant compressor, or even poor engine cooling system performance.