Multitask

Go into the menus (not sure where it is) and do a factory reset. You'll loose all your settings , but it might bring it back. The reset button on the front is just a hardware reset

What are you looking for besides 'cities' ?

Probably not supported, go the Android Auto web site and see if it is

go to their site and check, but yes they do if the car is listed on their site.

I don'thave access to my 8100 right now (car in shop) but I do remember that it will show blue 'bubbles' where ever there is a POI like a gas station... I think the companies have to pay for the bubbles to show up... I know I've passed by gas station that didn't show up on the map... could be why you don't see anything

I used it mosly as a reference... yes the voice is not all that great as compared to Googles... being that it's not setup by someone who speaks english, but rather someone from another contry, it gets some words (a lot of spanish words in LosAng) As far as the route it picks it is usually as good as Googles... what I really hated was that unless you were RIGHT at the spot it thinks you need to go, it will re-route you a LOT. i.e. if you have it go to CVS, it's going to have you practcly park at the front door before it tells you , you have arrived. At least wiht Gooles Maps it tells you

What businesses are you wanting to see?

only the x200 units I belive, not sure if it's all of them.... any of the x100 and before can't do that

I think the reset button just resets the hardware, not the OS I'd have to go look, but maybe there is a Factory Reset within the menus, try that... you'll loose a lot of settings.... I know there is a way to save some of them to an SD card

then either it's defective, or some key on the unit is stuck

Check the steering wheel, and your adapter, could be somewhere there... On the same note: I have the latest touch, 8100 with the Maestro... my issue has been that some of the songs will ski about 1 second at the start ... BANG plays as ANG ... Or it will skip a second within the song I just live with it cuz I don't want to take out the HU, send it in to Pioneer for 6 weeks living without it and a gapping hole in my dash, then get it back hoping it's 100% fixed....

So that others can help.. What car what steering wheel adapter details

THis is assuming that you have an iPhone that can do Carplay... if not then you'll have to buy one

PLug the USB cable that came with your iPhone into USB1 and set the unit to use Carplay, and it should work...