Lotus Elise S1 Service Notes page 557

Lotus Service Notes 340R
Instruments
Speedometer
This instrument displays, in analogue form, vehicle road speed in either MPH (with a secondary scale in
km/h), or km/h according to territory. Recalibration of the needle position will occur during a three second
period following ignition switch on. The instrument face is illuminated when the marker lamps are switched on.
Tachometer
The tachometer indicates engine speed in revolutions per minute. A safeguard in the engine manage-
ment system limits engine speed to 8,000 rpm. Do not run the engine continuously at its maximum speed, or
allow overspeeding to occur on the overrun by changing down through the gears too early, as this imposes very
high loads on engine components, leading to premature wear and possible failure.
Recalibration of the needle position will occur during a three second period following ignition switch on.
The instrument face is illuminated when the marker lamps are switched on. The lenses of both speedo and
tacho are treated with an anti-refletcive coating.
LCD DISPLAY PANEL
A liquid crystal display (LCD) panel is in-
corporated into the speedometer in order to
display fuel level, coolant temperature, total
distance and trip distance. The panel is blank
until the ignition is switched on, with the illu-
mination dimming when the marker lamps are
switched on, to that level selected by the panel
lights control (see below).
Fuel Contents Display
The bottom left coiner of the LCD panel
displays in the form of a bar graph, the ap-
proximate proportion of fuel remaining in the
36 litre tank. The bar graph displays in eight
equal steps, and to highlight a low fuel condi-
tion, the display flashes when the level falls to
the last eighth.
In order to ensure the vehicle is not stranded, and to protect against the potentially damaging effects of fuel
starvation, it is strongly recommended to refuel at the first opportunity when the display flashes.
Coolant Temperature Display
The engine coolant temperature will be displayed at the bottom right hand corner of the panel as soon as
the temperature reaches 40°C. The running temperature will fluctuate a certain amount as the operating
conditions change, and during periods of idling or in heavy traffic, the temperature may rise to over 100°C, with
the cooling fan switching on at approximately 104°C. The display will flash at temperatures over 110°C in order
to prompt closer monitoring of high temperatures, but as the pressurised cooling system has a boiling point of
over 120°C, only if the temperature approaches this level need there be any cause for concern. If this should
occur, allow the engine to idle for a few minutes whilst monitoring the temperature, and if it continues to rise,
switch off and seek qualified assistance.
After a heavy snowfall, ensure that the radiator cooling inlet and outlet grilles in the front body are cleared
of snow before driving the car, or overheating may occur.
Odometer
A six digit odometer (total distance recorder) reading is displayed at the top left hand corner of the panel,
and is calibrated in the same units (miles or kilometres) as is the speedometer.
Trip Recorder
A four digit trip recorder is provided at the top right hand corner of the panel, calibrated in the same units
as the speedometer. Below 100, the display includes tenths (0.0 - 99.9), and over 100, whole units (100 -
9999).
In order to zero the trip display, switch on the ignition, and press for a moment (less than one second), the
Distance recorder Trip display
982345 73.4
Fuel contents Coolant temperature
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