Every car is required to have some sort of tire pressure monitor nowadays. However, not all systems are equal.
It seems unfair and a waste of time for a car to warn you that one of your tires has low pressure, but not tell you which tire is posing a safety hazard. Argh!
If the system is monitoring all of the tires, it should have the courtesy to at least let you know which one is low.
Instead, most systems require the car's owner go out and test all of the tires with a tire-pressure gauge, and figure out which one is low and then fill it up.
Nissan took everyone by surprise this year with a system that not only tells you which tire is low, but it will tell you when the tire you are adding air to is at the optimal air pressure. Start filling up the tire, and the four-way flashers start going to tell you air is flowing. And the horn chirps when the prescribed air pressure is reached. We love this feature, and our judges in AOL Autos Technology of the Year award nominated the system a finalist in the competition.
Even smarter: Nissan says the system didn't cost a cent to put into its cars. All the parts and sensors were already in the new 2013 Altima sedan when it debuted this year, so Nissan just had to program the car's software differently to make the system work.
We think every company should adopt the system.