The 15 amp fuse that runs the cigarette lighter in my 8 keeps blowing on me every time I use my portable air compressor. I apparently have a slow leak in my front right tire that causes my tpms light to come on every few weeks when my tire goes below 32psi.

Im using the portable tire inflator that comes with Mazda instant mobility kit.
I plan on having the tire replaced when I find a new set of wheels but for now I've just been topping off air with the kit and recently I've been blowing the cig lighter fuse like crazy. The air inflator uses a 10amp glass fuse and I've also blown that one once which I now replaced with a new 10amp glass fuse.

I've replaced the cig lighter with new 15amp fuses a few times and they keep blowing and it baffles me since the air inflator is only 10amps according to the fuse. Should I replace my cig lighter fuse with something higher such as a 20amp?

 

If you are sure that the pump is blowing the fuse...you could change to a 20...or a slow blow 15 and you should be OK.

Or get air at the gas station

 

^Thanks. Im sure its the air pump since its the only thing I plug into my cig lighter. I think I'll switch to a 20amp. I've used the gas station my last top off but it seems like a waste to keep going their for air since their pump runs for 4mins? (I think) and I literally only need to fill up my front right tire for about 30 seconds lol.

 

Replacing a fuse with a higher amperage is a big no-no. Fuses are rated to protect the gauged wiring running through that circuit. If you exceed the current capacity of the wire, it will melt and you could possibly have a fire on your hands. Will bumping up 5 amps give you a problem? Probably not. But it's a slippery slope my friend. Certainly don't go making a habit out of it.

My question is why a Mazda authorized piece of equipment cannot be used as intended. The eye-brow raiser to me is that you're blowing the fuse built into the compressor. That should pretty much tell you the compressor is not operating as it should. I suggest fixing the tire and buying a different portable compressor to carry with you. I have one that was well under $50 and runs fine off any cig lighter I've tried it on.

Lastly, the factory TPMS sensors don't trip until 26psi.

 

right about not using a 20A fuse. BUT maybe you can tell me where the fuse is located? I don't have power, but i don't see anything in the fuse box under the hood for this auxiliary 12v power. Is there another fuse box? is it labelled as something else?
Thanks.

 

theres a fuse panel in the driver side kick panel. i think thats where the fuse is for the aux power under the armrest