What might cause 2015 Acura TLX won t start clicking noise?

If You have any vehicle that won't start and is making a clicking noise, the first thing You should take a look at is the battery. This is the most likely cause in any model, and that includes the 2015 Acura TLX. The "clicking" noise You're hearing is the ignition attempting to start the vehicle with a current, yet the battery not providing enough charge to turn over the engine. To confirm, You can test the battery with a multimeter, or attempt to jump it with either another vehicle or a jump box. If this is indeed Your issue, You'll need to figure out why Your battery is dying. Some potential causes are an old battery incapable of holding a charge, a failing alternator, or a component that's pulling power and draining Your battery while the ignition is off.