P5 3L MkII
Instruments and controls
PART ONE-OPERATING INSTRUCTIONS
The instruments and driving controls are situated so they can conveniently
be seen and used, thus allowing maximum attention to be given to the road
ahead. They are all illustrated and described on the following pages.
The first number in brackets after each sub-heading refers to the layout
of instruments and controls on Saloon models illustrated on pages 4 and
5, whereas the second number refers to that of Coupé models shown
on pages 6 and 7.
The design of the
petrol/oil level indicator and water temperature indicator ensures that
the needle does not fluctuate, but there is a time lag of a few seconds
before they register, after the ignition has been switched on.
Ignition and starter
switch (22) (20)
The switch at the right-hand bottom of the instrument panel combines ignition
and starting control. Turn the key clockwise for 'on', then push in and
continue in a clockwise direction against a spring to start the engine.
Immediately the engine fires release the key, it will automatically return
to the ignition 'on' position.
The key is removable
and also serves for the front door locks and fuel filler cap; the other
key on the ring locks the luggage boot and glove box lid.
and starting switch, Saloon models.
With the ignition
switched 'off', only the following electrical equipment can be used:-
Driving lights (head, side and tail), interior lights, horns, clock and
Turning the ignition
switch anti-clockwise to the auxiliary position, the following electrical
equipment can be used: Windscreen wiper motor, heater fan, radio and heated
backlight, when fitted.
light (14) (14)
The red warning light, which is the uppermost of the three grouped warning
lights, appears when the dynamo fails to charge or the dynamo charging
rate is low. It will glow when the ignition is switched on and the engine
is stationary or running slowly and will go out when the engine speed
Oil pressure warning
light (13) (13)
The green warning light, which is the left-hand one of the group, glows
when the engine oil pressure drops below 6 to 10 lb/sq.in. (0,4 to 0,7
kg/cm2). It will light up when the engine is stationary and fade out when
the engine starts and the oil pressure has built up to exceed this figure.
lights, saloon model illustrated. A: Oil level switch. B: Ignition warning
light. C: Oil pressure warning light. D: Cold start control warning light.
The light may flicker
when the engine is running at idling speed, but provided it fades out
immediately the engine is speeded up, the oil pressure can be considered
Should the warning
light appear at any time when the engine is running above idling speed,
stop the engine immediately and investigate the cause; the most likely
is low oil level in the sump.
To guard against bulb
failure in the oil pressure and ignition warning lights, a check should
be made that the bulbs glow each time the ignition is switched on,
Oil pressure indicator,
Coupé models (-) (28)
On Coupé models an oil pressure indicator is fitted in addition
o the oil pressure warning light.
It is calibrated L
(low) on a red band, N (normal) on a white and and H (high) on a red band.
Under normal running
conditions the needle should be in the white band marked N. The needle
may drop to the low mark when the engine is running at idling speed, but
provided it returns to the N position immediately the engine is speeded
up, the oil pressure can be considered satisfactory.
pressure indicator, Coupe models.
Should the needle
drop to the low band and also the warning light appear at any time when
the engine is running above idling speed, stop the engine immediately
and investigate the cause; the most likely is that of low oil level in
the sump. Should on the other hand the needle rise appreciably above the
white band marked N, indicating an excessively high oil pressure, the
reason should be investigated at the earliest possible opportunity, otherwise
serious damage to the engine may result. High oil pressure is most likely
due to a sticking oil pressure release valve.
Cold start control
warning light (16) (16)
The appearance of the amber warning light, which is the right-hand lower
of the group, will indicate that the control has been left out inadvertently
and must be pushed in at once.
Like all mechanical
devices, the mixture control warning system is not completely fool-proof
and the responsibility for pushing in the cold start control rests with
the driver. Suspected bulb failure may be confirmed by pulling out the
cold start control momentarily when the engine is hot, when the bulb should
Should a warning light
bulb burn out it should be replaced at the earliest opportunity.
Cold start control
Marked 'Cold Start' and mounted under the parcel shelf below the steering
It provides a normal
mixture when pushed right in, then as the control is pulled out, the engine
idling speed is gradually increased; in addition, during the second part
of the control movement, the mixture is progressively strengthened until,
with the knob right out, a very rich mixture is obtained for starting
from cold. By turning the knob ~ slightly, the control can be locked
in any position.
When the engine has
started, the control must be returned to the normal position as soon as
possible, consistent with even running.
See starting procedure
for full details.
Ammeter (19) (29)
On Saloon models the ammeter is incorporated in the multiple gauge; a
separate unit is fitted at the lower edge of the instrument panel on Coupé
models. The ammeter indicates the charging or
discharging rate of the battery.
An automatic control
regulates the charging rate
When starting from
cold, the charge rate will rise to a steady maximum, remain constant for
a short while and then fall as the battery again becomes fully charged.
Fuel and oil level indicator (18) (42)
On Saloon models the fuel and oil level indicator is incorporated in the
multiple gauge, but a separate unit is fitted at the lower edge of the
instrument panel on Coupé models.
and oil level indicator, saloon models.
The indicator only
operates with the ignition "on", The instrument normally shows
the fuel level.
and oil level indicator, Coupe models
Oil level switch (15) (15)
The switch is in the centre of the instrument panel between the speedometer
and the multiple gauge.
To make an approximate check on the engine oil level, with the car standing
on level ground and the engine stationary, switch ignition on, push the
switch down and hold for a few seconds.
level switch, Saloon model illustrated. A: Oil level switch. B: Ignition
warning light. C: Oil pressure warning light. D: Cold start control warning
For an accurate check
on the oil level, use the dipstick. This should be done with the engine
cold and stationary, and car standing on level ground,
The combined petrol and oil indicator is not a precision instrument and
cannot be used to deter- mine accurate consumption figures.
temperature indicator, Saloon models.
This instrument indicates the engine working temperature. On Saloon models
it is incorporated in the multiple gauge, but a separate unit is provided
on Coupé models, which is fitted on the lower edge of the instrument
temperature indicator, Coupe models.
The dial is marked
C (cold) on a blue band, N (normal) on a white band and H (hot) on a red
Under normal running conditions the needle should be in the white band
The car has been equipped with a specially designed ventilating system,
making use not only of the windows and side vents, but also of two channels
of air entry into the body.
heating and cooling system
In cold weather air
entering the car for ventilation can be suitably heated and used also
to demist or defrost the windscreen.
A powerful heater
unit is used to heat air entering from outside the car through the grille
below the windscreen; it does not recirculate stale air from inside the
motor control switch
Two heater controls
are placed one on either side of the centre glove box; in conjunction
with a two-speed fan motor control switch on the instrument panel, and
by suitable combination of their settings, the system will meet the varying
requirements referred to below.
An additional refinement is the provision of cool air inlets at two levels.
The first is at face level at each end of the facia panel; to operate
push centre butterfly to control amount and direction of cool air. The
second, for use particularly in hot weather, allowing cool air to pass
direct to the toe board on either side, being controlled by knobs marked
"cold air" below the parcel shelf at each end.
This system operates
only with the forward movement of the car and is progressive as the speed
Operation of ventilation,
heating and cooling system (2 and 5) (2 and 5)
For normal driving conditions:
Set right-hand control to "demist" and left-hand control between
"cold" and "hot", according to desired temperature.
For increased output, switch on heater fan by moving the switch to the
'slow' or 'fast' position, depending on the output required.
of controls for normal driving conditions
To meet other conditions typical settings of the controls, which are progressive
in their action, are given below:
Set right-hand control to defrost and move left-hand control to hot. For
increased output move heater fan switch to the 'slow' or 'fast' position,
according to desired temperature.
of controls to defrost windscreen
For maximum heat:
Set left-hand control to hot and the right-hand control to detent just
above the de-frost position. This position is positive and the lever will
'click' into it. Set heater fan switch on left-hand side of instrument
panel to the 'fast' position.
of controls for maximum heat
Set left-hand control to off position and move right-hand control to demist.
Set heater fan switch on left-hand side of instrument panel to 'slow'
or 'fast', if a higher output is required.
of controls for demist
Operation of cool
air (23 and 43) (21 and 44)
Cool air to upper part of car: push centre butterfly round to control
amount of air required and the direction of air flow.
cool air system
For cool air to the
lower part of the car: pull out control knob, turn clockwise to lock in
position required; to close turn knob slightly anti-clockwise and push
cool air system
Main light and
parking switch (20) (18)
The side, tail and headlamps are controlled by the uppermost switch on
the right-hand side of the instrument panel.
Switch in central
All lamps extinguished.
Switch in R.H. (side)
Side, tail and rear number plate lamp on; also headlamps, depending on
the position of the headlamp switch situated on the steering column.
Switch in L.H. (Park)
R.H.D. models: right-hand side and tail lights on.
L.H.D. models: left-hand side and tail lights on.
With switch in the "Park" position the headlamps cannot be used.
light switch, Saloon model illustrated
With the lamps switched on to the side position at the panel switch, the
headlamps will be either 'on' or 'off', depending on the position of the
main lamp switch on the steering column.
On North American
cars, the side lamps are extinguished when the headlamps are switch on.
The headlamps will not operate with the panel switch in the "Park"
switch. A: Headlamp switch. B: Direction indicator and headlamp flasher
Headlamp dipper switch (31)(32)
The dipper switch, which is operated by the small left-hand organ type
pedal, replaces the primary filaments in both headlamps by secondary filaments
Main beam warning
light (12) (12)
The small blue warning light is positioned at the bottom centre of the
It glows when the primary headlamp beams are in use; its purpose is to
remind the driver to switch off or dip the headlamps on entering a brightly
lit area, or when approaching other traffic.
ain beam warning light. A: Main beam warning light. B: Indicator arrows
light switch (9) (9)
The rheostat switch, which is the uppermost on the left-hand side of the
panel, is only operative when the sidelights are on; maximum brightness
is obtained by moving the switch knob slightly outwards. The panel lights
can then be progressively dimmed by continuing the outward movement of
switch (6) (6)
The switch controlling the wipers is the lowest of the left-hand switch
panel. Move switch outwards to switch wipers on. When the switch is returned
to the 'off' position, the wiper blades are automatically parked at the
end of their stroke.
The speedometer incorporates total and trip mileage indicators. The trip
reading can be turned back to zero by rotating the button protruding beneath
the facia panel. On 4-speed Saloon models the maximum recommended speeds
in each gear are indicated by appropriate yellow figures.
On cars fitted with
Borg-Warner Automatic transmission, a speed of 105 m.p.h. (168 k.p.h.)
must not be exceeded otherwise serious damage to the engine may result.
4-speed model illustrated
The red marking on
the speedometer face is for the purpose of drawing attention to this point.
The reason for this
limitation is that the axle ratio has been chosen to give the best overall
performance suited to the majority of requirements.
The tachometer is housed in the instrument panel adjacent to the speedometer.
It gives the driver
visual indication of the engine speed.
The amber warning
sector from 5,000 to 5,200 r.p.m. is followed by a red danger sector covering
the range from 5,200 to 5,500 r.p.m.
In the interests of
reliability and engine life, speeds should not normally be allowed to
exceed 5,000 r.p.m., but 5,200 r.p.m. may be used momentarily.
Under no circumstances
should the needle be allowed to travel into the red danger sector, otherwise
serious damage to the engine may result.
arrows (11) (11)
The green direction indicator arrows at the bottom of the speedometer,
flash either R.H. or L.H., depending on the direction of turn, in sympathy
with the indicatorbulbs. The flasher unit, mounted behind the instrument
panel, is audible in operation.
indicator arrows. A: Main beam warning light. B: Indicator arrows
Should either a front or rear indicator bulb fail, the remaining indicator
will continue to flash, and both indicator arrows will flash rapidly;
the flasher unit will not be heard.
and headlamp flasher switch (41) (22)
Is the upper lever on the right-hand side of the steering column. To indicate
a turn to the right press the control downwards; for a left turn, upwards.
The direction indicator
control is self-cancelling; on a slight bend the control may not return,
which case it must be cancelled by hand.
indicator and headlamp flasher switch. A: Headlamp switch. B: Direction
indicator and headlamp flasher switch.
To flash the headlamps
lift the switch slightly upwards towards the steering wheel. The headlamps
can be flashed at any time, providing they are not switched on to main
Fuel reserve switch
A dual fuel pump is fitted to all models and the centre switch on the
right-hand side of the instrument panel operates the secondary pump, thus
drawing on the reserve supply of fuel.
This switch must normally be in the 'Main' position; however, the secondary
pump should be used once a week for a few miles driving to ensure that
it is kept in working condition. Switch lever to the right when it is
desired to draw on the reserve supply. Do not forget to turn the switch
to 'Main' after this operation or when the fuel tank has been replenished
after using the reserve supply in the normal manner. Reserve supply is
approximately 1.5 gallons (7 litres). Total capacity 14 Imperial gallons
reserve switch, saloon model illustrated
Clock (4) (4)
The clock is mounted in the centre of the facia rail. To adjust the hands
push in the knob in the centre of the instrument and turn in the required
Each interior light is switched on automatically when the appropriate
door is opened and extinguished when the door is closed. When any of the
rear doors are opened, both lights are automatically switched on and are
extinguished when the door is closed.
The lights can be
controlled manually by means of a small switch on top of light.
Fog lamp (optional equipment)
When fog lamps are fitted they are normally controlled as follows:
Saloon models, Toggle switches under the instrument panel.
Coupé models, Toggle switches on the underside between each pair
of nacelle instruments.
lamp switch, Coupe models
Alternative positions for all Saloon models except Borg-Warner are detailed
On 4-speed Saloon models, two switches on the steering column cover; on
4-speed models with overdrive, one switch on steering column and one toggle
switch under instrument panel.
Fog lamps can only be used when the main switch is on.
lamp switch, Saloon models
For bulb replacement
on instrument panel and all lights, interior and exterior, see Part Two
of this book.
This is situated beneath the front parcel shelf. To operate, push in knob;
after approximately eight seconds the knob will return to its normal position,
the element can then be withdrawn for use.
When the panel light is on, the cigar lighter is illuminated to facilitate
removal and replacement.
On Coupé models
a cigar lighter is also provided for the rear seat passengers. It is incorporated
in the ashtray situated between the rear seats.
Operation is as for
the front cigar lighter.
cigar lighter and ashtray, Coupe models
Ashtrays (28) (27)
These are mounted under the parcel shelf. To use, pull out to stop. To
empty, depress lever at rear of tray and withdraw.
Three ashtray slides are fitted to the underside of the parcel shelf,
two adjacent to the steering column, the other adjacent to the cigar lighter,
thus giving alternative positions for the two ashtrays supplied.
Provision is made for fitting radio on the facia board in place of the
centre glovebox locker.
Operating instructions are supplied with the set.
The heated backlight which is available as an optional equipment, is controlled
by a push-pull switch fitted to the lower edge of the facia panel, between
steering column and handbrake. A white warning light is incorporated in
the knob to indicate that the backlight heating element is switched on.
It can also be used
with the ignition switch in the auxiliary position.
The windscreen washer is electrically operated by the push button situated
on the left-hand side of the instrument unit on R.H.D. models and on the
right-hand side on LH.D. models.
To wash the windscreen press the button and hold until sufficient water
is on the screen. Use soft or distilled water if possible.
In cold weather, to prevent freezing of the water, the container mounted
under the bonnet on the left-hand wing valance, should have 0.8 pint of
methylated spirits added to one jar of water.
It is important that the proportion of methylated spirits to water is
not increased, otherwise damage to the mechanism may result.