What to Do When the Air Vents of a Mercedes-Benz S-Class Blow No Air?
2 Answers
Open the car's dashboard and check if the evaporator core filter is clogged. If it is clogged, replace the evaporator core filter and inspect the air ducts for any foreign objects. Open the front hood and check if the condenser refrigerant pipe is frosted or iced. If it is frosted or iced, replace the preheating sensor on the car's refrigerant pipe. If neither of these is the issue, then further inspection at an auto repair shop is necessary.
If the air vents in my Mercedes S aren't blowing air, I'd start with basic checks. First confirm the AC system is activated - press the Auto button or manually increase fan speed. If temperature is set too high it may not work, try adjusting to a comfortable level. Then check if the air recirculation mode is stuck, as the smart AC in Mercedes S can sometimes misjudge. If still no airflow, open the glove compartment to access the cabin air filter - if it's clogged with compacted dust blocking the vents, cleaning or replacing the filter should solve it. These filters are inexpensive and regular replacement prevents this issue. If that doesn't help, it might be a faulty blower motor or blown fuse; if you don't hear the fan noise, locate the fuse box on the passenger side and test relevant fuses per manual instructions. If you can't identify the problem, visit the dealership - they'll use diagnostic tools to check circuits or control units, don't risk driving dangerously. Regular AC system maintenance with modest spending ensures safer and worry-free driving.
