Mechanic says 'hidden' car button 'nobody knows' can save drivers £75

A mechanic has issued a warning over a "hidden" compartment "nobody knows about". Leading motoring specialist Scotty Kilmer says the secret air filter can be accessed behind a panel located in the glovebox. The tool is responsible for the air pumped through car air conditioning units and heaters, the mechanic explained.

Scotty said: “Today I'm going to tell you about the hidden air filter fitted in your car that nobody knows about. It's called the cabin air filter. You squeeze the glove box and it comes out. If you look inside there’s a cover that snaps off and out comes the cabin air filter.

“This filters the air that goes into your air conditioning and heating system. Clean it out once in a while by whacking it on concrete until all the crumbs come out of it. If it's real dirt you can go and replace it. My advice is buy it online cheaper because the auto parts store charges too much.

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“And if you're really sensitive to smells like my wife, you can buy a black carbon-activated one like this that works better.” The handy tip could save drivers cash - with air filter replacements costing as much as £75 for motorists. Replying to Scotty, a motorist said: "I’ve noticed all of the keys hanging from your belt loop. I was an engineer at a large hospital and had more keys as you do.

"Most of them were the same brand, color and size. I separated them as the ones I used most often, locational, less often and smaller. It helped me a lot. Other engineers had me organize their keys the same way."

Another typed: "In my Toyota Camry, the filter is accessible with the glove box in the mounts. Just open the lid, move the owner's manual and other stuff out of the way, then pop off the plactic cover and swap the dirty filter with a clean one. To be fair, it's a 2014 model, so the technique may be different in a newer one."