Car Bluetooth kits: Built-in and aftermarket

* Sony Ericsson HBC-30 — Semi-compatible The automatic answer function cannot be used with the iPhone. In order to answer a phone call, the user must slide the unlock function, answer the phone, select the speaker function, then select the HCB-30 from the list of available devices. Alternatively, you can press the phone icon on the small control panel of the HCB-30 to answer.
* Land Rover LR3 — Compatible Nathan Rosenberg writes: “My phone works great through the LR3’s integrated Bluetooth speaker phone, including the dial pad and off switch in the truck.”
* Audio A8 built-in — Compatible
* Anycom HC110 — Incompatible
* Mercedes E320 — Compatible There is a face plate at the bottom of the adapter. A code is under that plate, and you need it to enter as a security code when pairing the iPhone with the Bluetooth adapter. Turn on the iPhone Bluetooth network search before turning on the car (Thanks, Nancy)
* Toyota Camry Hybrid — Compatible Bluetooth is standard with the Camry Hybrid, and iPhone Atlas reader Mitch reports that the iPhone works well with it. Instructions for operation: 1.Turn on Bluetooth on the iPhone 2. Press the Talk button on the steering wheel 3. Speak the command “Setup” 4. The car’s voice walks you through the rest – setting a pairing code, adding a new phone, etc.
* Toyota Prius — Compatible On-screen instructions take you through the pairing process. Once paired, incoming calls are routed to the car’s speaker and microphone.
References :
http://www.iphoneatlas.com/2007/07/03/iphone-accessory-compatibility-index/