tuning parking sensors range

I wouldn't mess with it.

Incidentally, if the sensors need to be reinstalled, they are extremely expensive to calibrate. You are looking at thousands of dollars.

 

Yes. Look in the manual - you'll find a list of scantool tweakable things there, including that. Haven't adjusted myself though, and don't recall whether the default was long or short.

 

No. What KMO is talking about are customization options built into the car itself by Toyota.

When it comes to parking assist, there are three customization options: Front Center, Rear Center, & Corners. Each of those has two selections: Standard(default) and Near. At least that is on US cars. The info is found in section 9.2 of the manual. Look for something called Intuitive Parking Assist or something in Italian close to that. (But not Advanced Park; that's the auto-parking feature on some of the top-trim models.)

If you have Panoramic View Monitor(the 360 degree camera option), you should be able to change the Front Center and Rear Center settings through the PVM options screen. For everything else(Corners and/or non-PVM cars) you need to go to a dealer or get one of the good diagnostic tools and a Global TechStream(GTS+) subscription. I could be wrong, but I don't think a Carista is going to be able to go deep enough into the settings. I do know that Carista still doesn't list the gen5 as a supported car.

 

It is on page 629. It says only the Toyota dealer can change it from standard to near.

I wouldn't be very comfortable in setting it to near. In my Gen 4, when the sensors get nearer, it turns from one yellow bar to two yellow bars to red bars within a couple of inches or so, leaving little reaction time. I also don't know how well the automatic braking works if you set it to near.

 

And is it perhaps possible that someone driving in Rome might have to deal with more obstructions and false positives on a daily basis than someone living in Paramount, California? That maybe they are already on high alert all the time because of narrow streets and congested everything, and a car that constantly beeps becomes an annoyance you ignore instead of a safety feature that's helpful? Hell, I'm about ready to have the corner setting changed to near just because of the noisy nightmare of going through a restaurant drive-thru.

 

I think Carista just does the same switch toggling in the car's programs that the dealer software does.