G-Book

G-Book was a telematics subscription service provided by Toyota Motor Corporation in Japan[1][2][3][4] for its Toyota- and Lexus-branded vehicles.

[11] In Japan (T-Connect Japan Archived 2018-08-05 at the Wayback Machine), and recently in Middle East countries (Bahrain, Jordan, Kuwait, Lebanon, Oman, Qatar and UAE) T-Connect is being offered as a download from Apple's AppStore and Google Play as a subscription telematics service, which uses the G-Book architecture.

Map updates and music downloads are not available for China-market G-Book-enabled cars, and traffic information is only available in Shanghai, Beijing, Guangzhou, and Shenzhen.

The DCM model is also equipped with its own GPS receiver and features, to track a stolen vehicle, and it also has an emergency notification ability to transmit the location of airbag deployment.

According to a press release from Toyota dated 28 August 2002 "Navigational maps and the on-board terminal's basic software are stored in a Secure Digital (SD) card.

G-Link has a different software configuration versus G-Book, particularly in its link to the 24-hour Lexus Owner's Desk hotline, and is offered standard for the first three years of ownership.

[9] The G-Link software runs off of the vehicle's hard disc drive navigation system and song library, and includes traffic updates, HelpNet compatibility, and the G-Security service.

A G-Sound music distribution service offers samples and downloading to the vehicle's hard disc drive of MP3s from different genres.

A U.S. equivalent of the G-Link system with similar but not identical functionality, called Lexus Enform with Safety Connect, was launched in 2009.