engine overheat LOTUS ELISE 2005 Owners Manual

petrol (LRP), will cause irreversible contamination of the pre-
cious metal catalysts and of the exhaust gas sensor used by the
computer controlled engine management system.
It is important that the Maintenance Schedule (see separate
booklet) is followed at the specified time and distance intervals
(this is a requirement of the warranty), and that the car is kept in proper operating condition. Failure to do so may result not only
in a loss of fuel economy and emission control, but may cause damage to the catalytic converter.
WARNING:
• If the engine malfunctions in any way (e.g by a change in sound) have the fault diagnosed and repaired promptly.
Continuing to drive the car with an engine misfire could cause the catalytic converter to overheat, with possible heat damage to other car components, and an engine bay
fire. Operation of the ‘Malfunction Indicator Lamp’ (MIL)
is fully described later in this handbook on page 49.
• DO NOT park or drive the car in areas where combustible material, such as dry grass or leaves, could come into
contact with the hot exhaust system. Under certain wind and weather conditions a grass fire could be initiated.
• DO NOT tamper with any electrical components with the battery connected. You could receive an electric shock
from the spark plug coils or initiate a car fire.
• DO NOT check or adjust any engine bay equipment with the engine running. Failure to comply with this may result
in you or your clothing becoming trapped.
• DO NOT use the car if a fuel leak is suspected, as may be indicated by a persistent smell of fuel. Have the fault

diagnosed and rectified without delay. A fuel leak may result in a fire or explosion.
• DO NOT touch or approach, any part of a hot exhaust

system. Failure to comply with this may result in you
receiving severe burns.
• DO NOT allow servicing or repairs to be carried out by unskilled persons as this may adversely affect the han
-
dling and safety features on your car. Lotus dealers have
trained staff who are best qualified to maintain your car
to the correct specification.
Safety Information
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Seat Belt Tell Tale
The red seat belt tell tale is provided as a reminder that both
driver and passenger should always wear the seat belts, no
matter how short the journey. The lamp will flash until the driv
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er’s seat belt is fastened, accompanied for the first 8 seconds by a buzzer.
Brake Tell Tale
This tell tale will glow red with the ignition switched on
whenever the parking brake is applied. Driving the car with the brake not fully released will cause overheat damage to the rear
brakes. Each time the parking brake is released, check that the
tell tale is extinguished. With the parking brake released, if the tell tale should light
at any time after the six second check period, stop the car im
-
mediately, as the circuit has detected a dangerously low level of brake fluid in the master cylinder reservoir, possibly caused
by a hydraulic leak in one of the separate front or rear brake
circuits. In the event of a leak there is a danger that air may enter the hydraulic system and cause spongy operation and
extended pedal travel. The divided brake circuit should ensure
that emergency braking remains, but the car should not be driven until the fault has been identified and rectified.
WARNING: If the tell tale remains lit when the parking brake has been
released, the footbrake may not be working properly. Stop
the car immediately it is safe to do so, and do not continue until the fault has been rectified. Continuing to drive could cause a crash and result in death or serious injury.
Oil Pressure Tell Tale
This red tell tale warns of low engine oil pressure. The lamp
will be lit whenever the ignition is on and the engine is stopped, but should go out as soon as the engine is started. If the lamp
fails to go out after engine start up, or comes on when the engine is running, stop the engine immediately and do not restart until
the cause has been investigated and rectified.
Instruments & Switches
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will also disable the engine coolant pump and result in rapid overheating; stop the engine as soon as it is safe to do so, and
summon assistance. If the drive belt is intact and the cooling
system unaffected, it may be possible in favourable daylight conditions, to drive a short distance to a repair facility, but do not, under any circumstances, allow the battery to become
completely discharged by continuing to drive.
Engine Malfunction Indicator Lamp
The engine Malfunction Indicator Lamp (MIL) is provided to
warn the driver that the engine management system has de
-
tected a fault which may result in increased noxious emissions from the exhaust. In order to minimise emissions and potential
engine damage, various operational limitations may automati
-
cally be applied. i) If the MIL lights continuously whilst driving, immediately reduce
speed and adopt a moderate driving style. Seek dealer advice
without delay and avoid all unnecessary journeys.
ii) If the MIL flashes, an engine misfire has been detected which is likely to cause overheat damage to the catalytic converter.
Slow down immediately and be prepared to stop.
- If the MIL then stops flashing, and is lit continuously, proceed with caution and seek dealer advice.
- If the MIL continues to flash, stop the car as soon as it is safe to do so, and switch off the engine. Seek dealer advice.
NOTICE:
Continuing to drive the car with a flashing MIL may
cause overheat damage to the catalytic converter, possible en
-
gine damage, increased emissions, and impaired fuel economy and driveability.
In order to comply with emissions regulations, data regarding
activation of the MIL is recorded in the engine electronic control
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ler, and may be downloaded by Lotus dealers.
Security/RPM Tell Tale The security tell tale is located at the top of the tachometer
display, and indicates the status of the immobiliser and alarm.
• Tell tale out; engine is mobilised, and the alarm is off.
• Tell tale flashing; engine is immobilised, or alarm is armed
and engine immobilised.
For full details of the car security system, refer to the earlier
section ‘Car Security’.
Instruments & Switches
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When only a single segment remains, representing approxi-
mately 1.3 U.S. gall. (5 litres), the amber low fuel tell tale will
flash. Refuel at the next opportunity.
NOTICE: Do not allow the tank to run completely dry, as this may damage the catalytic converter and fuel pump. This may
affect the terms of your warranty.
Coolant Temperature Display The engine coolant temperature will be displayed at the bot
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tom right hand corner of the panel as soon as the temperature reaches 162°F. The running temperature will fluctuate a cer
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tain amount as the operating conditions change, and during periods of idling or in heavy traffic, the temperature may rise to
over 212°F, with the cooling fans switching on at half speed at
approximately 208°F and at full speed at approximately 217°F.
The temperature display will flash at temperatures over 226°F to prompt closer monitoring by the driver of high temperatures.
The pressurised cooling system has a boiling point of over 248°F.

If the temperature approaches this level then the driver should be concerned. 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.
NOTICE: After a heavy snowfall, ensure that the radiator cooling
outlet grilles in the front body are cleared of snow before driving
the car, or overheating may occur.
Odometer An odometer (total distance recorder) reading is displayed at
the bottom left hand corner of the panel.
Trip Recorder A trip distance recorder is provided at the top left hand corner
of the panel. In order to zero the trip display, switch on the ignition, and
press for a moment (less than 1 second), the small button
on the steering column shroud ahead of the ignition switch.

This dual function button also controls the panel illumination
- see ‘Instrument & Switch Illumination’.
Instruments & Switches
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Cooling SystemThe engine cooling system uses a header tank to ensure that
the system remains completely filled, and also to accommodate
expansion of the coolant with increasing engine temperature.
The tank is mounted at the left hand side of the engine bay, and is fitted with a 108 kPa (15 psi) pressure cap to raise the boiling point of the coolant to over 120°C (250°F).
WARNING:
• Do NOT attempt to remove the pressure cap or air bleed plug from the header tank when the engine is warm
as serious scalding could result from boiling water

and/or steam.
• Coolant is hazardous to your health and may be fatal

if swallowed.
• Keep coolant out of reach of children.
• Coolant is hazardous to animals and may be fatal if

swallowed. Clean up spilled coolant and do not leave in
open containers.
The level of coolant in the translucent header tank will rise
as the engine warms up, and fall as it cools down, and under
normal circumstances it should not be necessary to add any
coolant to the system between services. If overfilled, the excess
coolant will be ejected when the engine is warm. If under filled, overheating may result.
Servicing & Maintenance
106
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Air bleed plugCoolant header tank cap

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exchangers from both frost damage, and metal corrosion. The
Elise is factory filled with a 50% concentration of Havoline XLC
Extended Life Coolant, which contains Organic Acid Technology
(OAT) based corrosion inhibitors to provide long coolant change intervals combined with freedom from environmentally damaging phosphates, silicates and nitrites.
NOTICE: No other type of coolant should be mixed with this
OAT coolant.
Havoline XLC may be identified by its orange colouration, and
by a label around the header tank filler neck. The 50% concen
-
tration provides freezing protection down to - 40°F (- 40°C), and is recommended to be maintained throughout the life of the car.
Stronger concentrations should not be used. In an emergency, if an OAT coolant is not available, the
cooling system should be topped up using water only, but the reduction in freezing protection should be recognised, and the
concentration corrected promptly. In areas where the tap water is extremely hard (exceeding 250 parts per million), distilled, de-ionised or filtered rain water should be used for the water
content of the coolant mix. The effective level of ethylene glycol (anti-freeze) in the sys
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tem may be measured by your dealer using a hydrometer, but in order to ensure that the required level of corrosion protection is
maintained, the coolant should be renewed every 4 years. For coolant capacity, refer to ‘Recommended Lubricants‘
and ‘Technical Data’.
NOTICE: Using an incorrect coolant mixture may result in ex
-
pensive damage to your engine and/or other car parts caused by overheating, freezing or corrosion effects. This damage would
not be covered by your new car warranty.
Coolant Drain /Refill Procedure The cooling system of the Lotus Elise has been carefully
optimised to allow the required cooling performance using the
minimum volume of coolant. This provides for high cooling sys
-
tem efficiency, with quick engine warm up and interior heating. When refilling the cooling system, it is vital to ensure that
the correct bleeding procedure is followed, and that no air pockets remain. This operation should be entrusted to your
Lotus dealer.
Servicing & Maintenance
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