Navigation System: Description and Operation: Overview

Navigation System

OVERVIEW
The navigation system provides audible and visual route guidance information to enable the driver to reach a desired destination. The system allows the driver to choose the route using minor or major roads or highways with the option of three routes. Directions to hospitals, museums, monuments and hotels are also available.
From 12.5MY off-road navigation is available and also CO2 optimized navigation.
The navigation system is integrated with the audio/video system and shares a number of components common to all systems. Map information is stored on a Hard Disc Drive (HDD) located in the Integrated Audio Module (IAM). Map uploads to the hard drive can be uploaded by the customer from a USB (universal serial bus) memory stick (not applicable to Japan/Asia specification vehicles).
The navigation system has various levels of user control through the Touch Screen Display (TSD) and the Land Rover Voice system. System volume adjustment can be made using the Integrated Control Panel (ICP), TSD and steering wheel controls.
There are a number of navigation system variants specific to various markets. On all systems the GPS (global positioning system) signal is received by the GPS (global positioning system) antenna located in the roof pod or Sigma pod antenna module.
The European navigation system includes the Traffic Messaging Channel (TMC) function, which receives traffic information from an FM (frequency modulation) antenna integrated into the rear spoiler. On a pre-selected route, the system will offer re-routing options depending on traffic conditions.
All North America Specification (NAS) vehicles are configured to receive TMC. TMC is transmitted in the USA and is available in areas of other NAS markets.
The navigation system is primarily controlled from the TSD which is located in the center of the instrument panel. Control signals from the TSD are sent on the Media Oriented System Transport (MOST) ring to the navigation software within the IAM. The IAM uses a dedicated Gigabit Video InterFace (GVIF) bus to transmit video signals to the TSD.

The navigation system uses the following components:
- Integrated Audio Module (IAM)
- Single or Dual-view Touch Screen Display (TSD)
- Roof pod or Sigma pod for GPS antenna
- Instrument cluster.
The dual-view TSD allows the front seat passenger to view television and video images when the car is being driven. The dual-view screen allows the driver to see the navigation or other system screens but not the TV or video when the vehicle is moving. The screen can be switched between single and dual view using a button on the Touch Screen Display (TSD).

NOTE:
Due to legislation, the NAS markets do not receive this dual-view option.
Japanese market vehicles have a modified system from other markets. These vehicles have an additional DVD (digital versatile disc) navigation computer module and a navigation video interface module located in the luggage compartment.
The Japanese navigation system includes the Vehicle Information and Communication System (VICS) function. The VICS supplies information to enable the navigation computer to re-route the navigation guidance or to inform the vehicle driver of traffic conditions in the vehicles vicinity. VICS information is provided to the system through an FM antenna integrated into the rear spoiler and a VICS beacon located on the LH side of the instrument panel.
Asia markets have a unique system which is fitted to the vehicles by the dealer or port of entry. These vehicles have a separate navigation computer located in the luggage compartment.