Instruments - Description & Operation: Description: General
The instrument packs fitted to all New Range Rover models are similar and only differ in the following features:
- mph or km/h speedometer
- tachometer maximum rev/min band.
- mph or km/h odometer and trip display
- message center language display
- ambient temperature display °C or °F.
The instrument pack is a totally electronic device which receives analogue or digital signals via hardwired or bus systems for instrumentation operation.
The signals are processed by two microprocessors which transpose the data into analogue gauge indications or warning lamp illumination. The pack is connected to the vehicle electrical system by three connectors which provide all input and output connections for instrument pack operation.
No internal components of the instrument pack are serviceable, with the only changeable parts being five 1.5W bulbs, at the rear of the pack, which are used for LCD backlighting illumination.
The instrument pack has two main functions; to provide information to the driver of the vehicle status and to process and relay digital signals from and to other system controlling ECU's.
The instrument pack features the following displays:
- Tachometer - large analogue display
- Speedometer - large analogue display
- Fuel gauge - small analogue display
- Engine coolant temperature gauge - small analogue display
- Engine service data - LED illuminated
- Gearbox/transfer box status indicator - LED illuminated
- Odometer - LCD
- Trip meter - LCD
- Ambient temperature - LCD
- Message center - LCD.
The instrument pack also features a number of warning lamps. The warning lamps illuminate in one of four colors which indicate the level of importance of the warning as follows:
- Red = Warning
- Amber = Caution
- Green = System operative
- Blue = Headlamp main beam operative.