going to key.

[ahavoja]

I haven't noticed any setting in the menu to disable the keyless entry. Somewhere in the Jazz there must be the antenna(s) that communicate with the key fob. Perhaps there is a fuse somewhere to cut the power from those antennas, though I don't know which fuse it would be. As a last resort, unplugging the 12V battery should turn off all electronics, but that may not be practical in every day use and the car's electronics may not like it either.

[Kremmen]

Disabling the cars remote sensor isn't going to work

Unless you unlock with the remote then using the 'keyhole' with the key, as soon as you open the door, I'm sure the alarm goes off

It does on Civics

[Lord Voltermore]

If you do find a way of disabling it , insurance companies might consider it a modification from original.
It may indeed be an increase in security  but good luck convincing your insurance company  of this if the car is stolen.      They charge a premium based on their assessment of risk . Some folk get their premiums increased quite unfairly because maybe  a Range Rover  or two has been stolen in their post code area.   

Disabling keys by double switching, or (as I do) use a faraday bag  to prevent relay theft  is a reasonable  precaution.    You could use a visible steering lock to deter causal thieves.

 But ultimately  no car is 100% safe from determined thieves.  They could take the car away on a recovery truck.  Or carjack it from you ,complete with yours keys etc , by violence or a distraction  deception  .Both are extremely unlikely .

[Downsizer]

Key only entry, smaller wheels and lower price were the reasons I chose Elegance rather than Advance. I didn’t particularly value the other Advance features. I don’t mind what the wheels look like as long as they’re round!

[stani]

But the latest Elegance (FL) has almost everything like the Advance, including keyless start.

And be careful, smaller wheels (15') are better for Jazz than larger ones (16'). It's even described here somewhere on the forum. Also because 15' are taller = softer ride.

[Downsizer]

My Elegance has no ignition keyhole but I have to press a button on the fob to unlock or lock the car. Then as long as the key is inside the car, I can start it.

[coldstart]

And be careful, smaller wheels (15') are better for Jazz than larger ones (16').

Moreover, the Elegance trim has a slightly smaller turning circle than the "better" trims, which can make all the difference in cramped spaces!
Unfortunately the turning circle cannot simply be changed on higher trims simply by mounting 15" wheels as it seems to be ingrainend into the car.