Mandatory tire pressure monitoring on new and older cars?

[Dragonbones]

Mazda has told us that the reasons they have suddenly stopped selling the Mazda 5 are that:
1. Their contract with the Ford factory has ended (as has Toyota's for Wish)
2. The government is now making tire pressure monitoring systems in new cars mandatory.

Also, Mazda says that

3. it will become mandatory to retrofit such monitoring systems to all existing cars, and they are now offering a supposedly discounted price to retrofit them, at something like $6990, which means the installation fee is being waived at present.

Does anyone know whether #3 is true, and when it will take effect?

Also, is this price by Mazda reasonable? Can it be done more cheaply through non-dealers? (I suspect that the retrofit rule is not necessarily going to take effect, that Mazda is telling customers this to try to get them to add a pricey, unnecessary upgrade, and that if it were ever to take effect, it would be available more cheaply elsewhere.)

[thelostswede]

I heard something about this visiting a company in the southern parts of the island.

However, oddly enough, we bought a new Honda a month or so ago and Honda didn't mention anything about this.

In terms of costs, you're being taken for a ride, as you can get a kit from Amazon for under $80 https://www.amazon.com/Rrtizan-Pressure ... 01JO5H0QI/

[Dragonbones]

Cheers. We didn't think the cost was reasonable or the item necessary, so didn't really consider it.

[thelostswede]

Talked to a company at a trade show today about it and apparently it's mandatory on all new cars since the 1st of July 2016.
This was the company I talked to, I have no idea if their products are good or not http://www.avertronics.com/products/det ... &f=12&pa=1

New acronym to learn, TPMS

Looks like PC home has options from NT$2,000 and up http://ecshweb.pchome.com.tw/search/v3.3/?q=tpms

Also, apparently our car has it, it was just not pointed out to us, which I find kind of odd when it's something that only recently became law.

[thelostswede]

Right, so after having done a little bit of due diligence it looks like there are two types. One that goes inside the tires and replaces the valve, hence the installation cost and one that is something you crew on top of the valve on the outside. The latter is the cheaper option, but can be damaged more easily. It also seems like various wireless standards are used, either 433MHz, sub 1GHz or 2.4GHz (normally Bluetooth for the latter).