What is the reason for the Mercedes-Benz GLC air conditioning failure during high-speed driving?
2 Answers
Mercedes-Benz GLC air conditioning failure during high-speed driving is caused by a broken temperature control flap. Below are the reasons and solutions for the Mercedes-Benz GLC air conditioning failure during high-speed driving: Reasons for Mercedes-Benz GLC air conditioning failure during high-speed driving: Broken temperature control flap. Solution: Replacing the flap can resolve the issue of the air conditioning being half hot and half cold. Taking the 2021 Mercedes-Benz GLC as an example, it is a mid-size SUV with the following dimensions: length 4764mm, width 1898mm, height 1642mm, wheelbase 2973mm, and fuel tank capacity 66l. The 2021 Mercedes-Benz GLC is equipped with a 2.0T turbocharged engine, delivering a maximum horsepower of 197PS, maximum power of 145kW, maximum torque of 320Nm, and paired with a 9-speed automatic transmission.
I used to drive a Mercedes-Benz GLC, and several times on the highway, the air conditioning suddenly stopped cooling, which was really annoying. I think the reasons are varied. For example, when driving at high speeds, the engine RPM is too high, and the compressor can't handle the pressure and just stops working. Or, when the refrigerant is insufficient, the airflow is too fast and it fails. Another possibility is that the fan has a problem, and strong wind can't blow in, so the temperature inside the car won't drop. I suggest first trying to lower the fan speed. If that doesn't work, pull over immediately to check the fuse or refrigerant tank. Don't mess around with it yourself to avoid damaging the circuit and making things worse. Just contact Mercedes-Benz after-sales service directly—they have professional tools to diagnose ECU fault codes, and a quick fix will solve the problem. This isn't something to delay. For regular maintenance, pay attention to cleaning the ventilation system, and inspect the air conditioning before high-speed trips to prevent surprises.
