From an Avalon to a Yaris, connecting you iPod to your Toyota can be very tough. There are a multitude of options that can just be overwhelming. The three main types of iPod adapters for Toyotas are wireless FM transmitters, direct audio inputs, and wired FM modulators.
Wireless FM transmitters are the simplest type of Toyota iPod adapter. These devices usually plug into your cigarette lighter. Once you plug in your iPod, the adapter will transmit the audio using a wireless FM signal to your factory Toyota stereo. Also, if you get an iPod specific FM transmitter, it will charge your iPod. So, like most people you are thinking easy enough, I’ll just buy one of these transmitters, plug it into my cigarette lighter, and my problem is solved. In most cases, it’s not that easy. Most people find FM transmitters pretty horrible. No matter what, you will have some sort of static in the background. Plus, the audio will drift in and out according to how powerful the radio stations are transmitting in you area. After about a month of owning one you will probably search for a better type of iPod adapter.