Why is there no response when pressing the car AC button?

[NaomiRose]

If there is no response when pressing the car AC button, it may be due to compressor damage or compressor clutch failure. Below is a detailed explanation of the possible causes: Car compressor damage: Damage to the car air conditioning compressor can result in the AC not working or poor cooling performance. Obvious symptoms include the compressor not rotating, unusual noises during rotation, abnormal pressure readings, high low pressure, low high pressure, or no changes in both high and low pressure. Car compressor clutch failure: Abnormal noises from the electromagnetic clutch may occur due to belt slippage, clutch slippage, improper installation of the electromagnetic coil retaining ring, leading to clutch damage. Alternatively, the electromagnetic clutch may fail to engage, possibly due to excessive air gap, poor circuit contact, or short/open circuits in the electromagnetic coil.

[LillianaLynn]

Last week, the AC button in my car wasn't responding either. Pressing it felt like nothing happened, which was really frustrating. Most likely, it's a blown fuse. Find some time to open the fuse box and check—there's a manual inside that labels the fuse for the AC. If it's blackened when you take it out, replace it with a new one. If that doesn't fix it, maybe the relay is faulty. That thing is next to the engine—tap it to see if it makes a clicking sound. The button could also be stuck; try cleaning it or pressing it a few times. Wiring issues are trickier—don’t mess with the wiring yourself; get a professional to check it for safety. I recommend not delaying the repair—driving on the highway without AC in summer is miserable. Regular maintenance of the electrical system can prevent this headache.

[VonBella]

The car's air conditioning button not responding is usually a minor electrical system issue. Start the inspection with the fuse, operate the fuse box under the dashboard, and replace the corresponding AC fuse for testing. If ineffective, consider a relay failure or internal wear of the button. Simple tools like a multimeter can be used for preliminary diagnosis of circuit continuity. The relay is often located in the engine compartment; be cautious to disconnect the power when testing. Corroded or loose wiring is also common, especially in older cars. Repair early to prevent bigger problems, as air conditioning failure affects driving comfort. Seek professional help if necessary.

[DiMatthew]

Sigh, the AC button isn't responding no matter how many times I press it, so annoying. Quickly check the fuse box—it's under the driver's seat—find the AC fuse and replace it. If it still doesn't work after swapping, maybe the relay is busted or the button is stuck. Don't try fixing it yourself; you might mess things up. This is a simple issue, and a repair shop can handle it in no time. Delaying it will just make driving unbearable, especially in traffic when you're sweating buckets.

[Kingston]

To resolve unresponsive AC buttons, conduct step-by-step troubleshooting. First check if the fuse is blown and replace it according to the manual location. If ineffective, test relay function by swapping with a spare unit. Inspect button contact cleanliness and wiring connections. Common causes also include loose plugs or corrosion. If manual inspection yields no improvement, the issue may involve the compressor control unit. Timely repair is recommended to prevent further circuit damage.