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HEATING, VENTILATION & AIR CONDITIONINGThe small size of the Elise together with the method of
construction and emphasis on lightweight, have resulted in heating and a.c. sytems which perform well under non-extreme
climatic conditions. In extreme temperatures and humidity the operational limits of the systems may be reached before the
desired temperature, or rate of temperature change inside the
car is achieved. The heating and ventilation controls comprise three rotary
switches to regulate; heater temperature, fan speed and air dis
-
tribution. Push button switches are provided for air conditioning and air re-circulation.
Air Conditioning The left hand push button selects air conditioning, but the
following conditions must first be met before the system will
operate:
• The engine must be running;
• A fan speed must be selected;
• Ambient temperature must be above 3°C.
With a fully cold temperature setting, refrigerated air will be
supplied. For dehumidified warm air, select air conditioning in
conjunction with a warm temperature setting. The tell tale in the switch button will light up blue when the
circuit is active. Note that the a.c. will default to ‘off’ when the ignition is turned off.
Heating, Ventilation & A.C.
61
p 98b
INTERIOR CLIMATE CONTROLS
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Air Re- circulation The air supply for the interior climate system is normally drawn
from both the car interior and from the fresh air intake duct ahead
of the engine cooling radiator. When the re-circulation button is pressed, the fresh air intake port is closed down to provide 90%
re-circulation air supply to the cabin interior. The re-circulation
facility should be used when maximum refrigeration is desired.
The tell tale in the switch button will light up blue when the
circuit is active.
Heater Temperature With the left hand rotary control turned fully counterclockwise,
no heating is provided. If cooled air is required, use this tem
-
perature position in conjunction with air conditioning. Turning the control progressively clock wise provides in
-
creasing levels of heat until at the fully clockwise position, maximum heat is supplied.
Fan Speed The centre rotary switch provides three fan speeds to boost air
circulation. Turned fully counterclockwise, the fan is off; Turning
the switch progressively clockwise operates the blower fan at increasing speed in three steps. Note that the fan operates only with the ignition switched on.
Heating, Ventilation & A.C.
62
p99
TemperatureFan SpeedDistribution
Air conditioning Air re-circulation
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REMOVABLE ROOF CONCEPTThe Lotus Elise has been designed to exploit the pleasures
of open top motoring, the better to enjoy exposure to the natu
-
ral environment, without the restrictions and confinement of a
cockpit roof.
In order to provide some weather protection to the occupants
and car interior, and allow the continued enjoyment of the car in unfavourable weather conditions, a simple hard or soft top roof may be fitted. The constant changing of loads and strains
to which a car is subject to when driving on roads, and the
tolerances required to allow for repeated removal and refitting of the roof, means that minor wind noise, and seepage at joints between the roof, body and doors cannot be completely sealed
in certain areas. Therefore small leaks are considered normal
for this model.
NOTICE: Do not take the car through an automatic car wash.
The soft top may suffer damage by the brushes or suffer leaks due to the high pressure water streams directed in areas which
would not apply in normal driving conditions.
WARNING: The soft or hard top roofs should be removed only whilst
the car is safely parked. Do not attempt to remove the soft
or hard top roof whilst the car is in motion.
External Operations
81
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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
-
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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WARNING:Replacing a fuse with one which has a higher rating may
cause extensive damage to the electrical system and pos
-
sibly cause a fire. If a fuse of the correct rating is not avail
-
able, use one of a lower rating as a temporary measure.
Slot
Rate Circuit Slot Rate Circuit
1 20A Aux pwr socket 12 10A ABS 2 5A Reverse lamps 13 3A ECU Ignition
3 20A Driver’s window 14 20A Rad. fans;
4 20A Pass. window 1&2 slow, 1 fast 5 10A Stoplamps 15 7.5A Radio, switch6 7.5A Turn indicators pack module
7 10A Ignition services 16 10A Parking lamps
8 7.5A Battery services 17 10A Dip beam LH9 15A Hazard lamps 18 10A Dip beam RH
10 7.5A Horn 19 20A A.C. comp. relay,
11 10A Alarm pwr rad fan 2 fast interior lamp 20 15A Main beam LH
21 15A Main beam RH
22 7.5A CDL
m254a
MAIN FUSEBOX
Fuse 1Fuse 11
Fuse 12 Fuse 22
As viewed
from in front
Electrical
136
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Footwell Sited Fuses Four fuses are secured to the main wiring harness just
ahead of the scuttle beam and accessible from the passenger
footwell.
Fuse Rating CircuitC1 20A Interior fan
C2 15A Wiper motor
C3 7.5A Audio key-in
C4 7.5A A.C. compressor
m248a
Front
Viewed
from
beneath Fusebox ‘C’Electrical
138
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Licence Plate Lamps To replace a bulb in a licence plate lamp, first remove the two
screws securing the lamp, and withdraw. Replace the festoon
bulb, and refit the lamp.
Interior Lamp To withdraw the interior lamp from the rear bulkhead, first ease
one end of the lamp from its aperture. Twist the bulbholder to release from the lamp body, and pull out the capless bulb.
Side Marker Lamps The side marker lamps fitted to the front and rear wheelarch
lips use light emitting diodes (LEDs) housed in a sealed lamp
body. Replacement of a lamp assembly should be entrusted
to your dealer.
ohs127
INTERIOR LAMP BULB
Electrical
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Camber - optimum - 1.8°
- tolerance range - 1.6° to - 2.0°
max.side/side 0.2°
Alignment - optimum 1.5 mm toe-in each side - tolerance range 1.2 to 1.8 mm toe-in each
side
max.side/side 0.3 mm
Electrical
Light Bulbs Watt. Type
Headlamps 55 H1 & H7
Front side/parking lamps 5 W5W
Front turn indicators 21 PY21w amber
Rear turn indicators 21 H21
Side repeater lamps 5 W Y5W amber
Stop lamps 21 H21
Tail/stop lamps 4/21 P21/4w
Tail/turn lamps 4/21 P21/4w
High mounted stop lamp 2.5 16 x LED
Reversing lamp 21 H21
Licence plate lamps 5 C5W
Interior lamp 5 W5W
System voltage/polarity 12V negative earth
Alternator 85A
Battery (service replacement)
- type Delco 19001598
- BCI code 26R- 6YR
- cranking power 550 amps @ -18°C
- reserve capacity 80 minutes
Engine
Type designation 2ZZ-GE
Cylinder configuration in-line 4
Capacity 1796 cm
3
Bore 82.0 mm
Stroke 85.0 mm
Camshafts Chain driven DOHC 4VPC
Valve actuation - inlet Variable timing and lift
- exhaust Variable lift
Compression ratio 11.5:1
Firing order 1,3,4,2
Technical Data
158
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