2021 Alfa Romeo 4C inflation pressure

53
TPMS
(Tyre Pressure Monitoring
System)
(where provided)
DESCRIPTION
The tyre pressure monitoring system
(TPMS) warns the driver of low tyre
pressure on the basis of the cold
inflation pressure prescribed for the car.
Changes in outside temperature may
cause tyre pressure to vary.
This means that a decrease in the
outside temperature corresponds to a
decrease in the tyre pressure.
The tyre pressure must always be
adjusted according to the cold tyre
inflation pressure.
Cold tyre inflation pressure is the tyre
pressure after letting the car at a
standstill for at least three hours or a
travel shorter than 1.6 km after an
interval of three hours.
The cold tyre inflation pressure must not
exceed the maximum pressure indicated
on the tyre sidewall.Tyre pressure increases also while
driving: this is a normal condition and no
pressure adjustment is needed.
The TPMS continues to advise the driver
of the low tyre pressure condition until
this is corrected; the warning continues
until the pressure corresponds or
exceeds the pressure prescribed for the
cold tyres. When the low tyre pressure
warning light
nappears on the
instrument panel, the inflation pressure
must be adjusted up to the prescribed
cold inflation value.
The tyre pressure warning light switches
off after the system refreshes
automatically. You may need to drive the
car for about 20 minutes at a speed
higher than 20 km/h to allow the TPMS
to receive this information.
NOTE
❒ The TPMS does not replace the
normal tyre maintenance service and
does not indicate any fault in a tyre.
❒ The TPMS must not be used as a
pressure gauge while adjusting tyre
pressure❒ Driving with low tyre pressure causes
overheating and may cause a fault in the
tyres themselves. The low inflation
pressure reduces fuel efficiency and tyre
tread life and may also affect handling
and braking performance of the car.
❒ The TPMS does not replace the
correct tyre maintenance.
It is up to the driver to maintain the
correct tyre pressure level measuring it
with a suitable pressure switch. This is
necessary even if the decrease in the
inflation pressure value does not cause
the tyre pressure control warning light to
switch on.
❒ The TPMS warns the driver of any
condition of insufficient tyre pressure.
If this drops below the insufficient
pressure limit for any reason including
low temperature and normal pressure
loss of the tyre.
❒ The seasonal temperature changes
affect tyre pressure.

SAFETY
54 The TPMS uses wireless devices with
electronic sensors mounted on the wheel
rims to constantly monitor the value of
tyre pressure.

The sensors mounted on each wheel as
part of the valve stem transmit various
information of the tyres to the receiver
module, in order to calculate the
pressure.
IMPORTANT Monitoring and maintaining
the correct pressure in all four tyres are
particularly important.
Tyre pressure monitoring system
low pressure warnings
43) 44) 45) 46) 47) 48) 49) 50) 51)
The system warns the driver if one or
more tyres are flat by switching on the
nwarning light constantly and by
displaying a dedicated messages.
In this case, stop the car as soon as
possible, check the inflation pressure of
each tyre and inflate to the cold tyre
pressure value prescribed for the car.
The system will automatically update
and after receiving the pressure update
the tyre pressure warning light switches
off.
You may need to drive the car for about
20 minutes at a speed higher than 20
km/h to allow the system to receive this
information.
32A0L0113
TPMS operation faults
The system fault is indicated by the
dedicated warning light
nwhich first
flashes for 75 seconds and then stays on
steadily. This can occur in any of the
following situations:
❒ Interference caused by electronic
devices or radio frequency emissions
similar to those of the TPMS sensors.
❒ Application of tinted films which
interfere with the signals of the radio
waves.
❒ Presence of snow or ice on the wheels
or the wheel arches.
❒ Use of snow chains.
❒ Use of wheels/tyres not equipped
with TPMS sensors.

SAFETY
56
43)The presence of the TPMS does not
permit the driver to neglect regular
checks of the tyre pressure, including for
the spare wheel.
44)Tyre pressure must be checked with
tyres rested and cold. Should it become
necessary for whatever reason to check
pressure with warm tyres, do not reduce
pressure even though it is higher than the
prescribed value. Repeat the check when
the tyres are cold.
45)Should one or more wheels be fitted
without sensors, the system will no longer
be available and, in addition to the TPMS
warning light flashing for less than one
minute before becoming constant, a
warning message will be shown on the
display, until 4 wheels with sensors are
fitted again.
46)The TPMS cannot warn of sudden
decreases in tyre pressure (for example
when a tyre bursts). In this case, stop the
car, braking with caution and avoiding
abrupt steering.
47)Replacing standard tyres with winter
tyres (and vice versa) requires TPMS
adjustment that must only be performed
by a dedicated Alfa Romeo Dealership.
IMPORTANT48)Changes in outside temperature may
cause tyre pressures to vary. The TPMS
system may temporarily indicate
insufficient pressure. In this case, check
the tyre pressure when cold and, if
necessary, restore the inflation values.
49)When a tyre is removed, it is
advisable to replace the rubber valve seal
as well: contact a dedicated Alfa Romeo
Dealership. Tyre and/or rim
fitting/removal operations require
specific precautions; to avoid damaging
or fitting the sensors incorrectly, tyre
and/or rim fitting/removal operations
should only be carried out by specialised
staff. Contact a dedicated Alfa Romeo
Dealership.
50)Strong radio-frequency interference
could inhibit the regular operation of the
TPMS. This condition will be indicated by
a message on the display. The message
will disappear automatically as soon as
the radio-frequency interference ceases
to affect the system.51)The tyre repair kit (“Fix&Go
Automatic”) provided with the car (where
provided) is compatible with the TPMS
sensors; using sealants not equivalent
with that in the original kit may adversely
affect its operation. If sealants not
equivalent with the original one are used,
it is recommended to have the TPMS
sensors checked by a qualified repair
centre.

95
INFLATION PROCEDURE
Proceed as follows:
107)
❒ engage the handbrake, unscrew the
tyre valve cap, take out filler hose
1 fig. 80 and tighten ring nut 2 on the tyre
valve;
80A0L0078
❒ make sure that switch 1 fig. 81 for the
compressor is in position 0 (off), start the
engine, insert the plug into the cigar
lighter socket on the central tunnel
(see fig. 82) and switch on the
compressor by bringing switch 1 fig. 81
to I (on);
82A0L0080
❒ inflate the tyre to the pressure
indicated in the “Wheels” paragraph in the
“Technical data” chapter. In order to
obtain a precise reading, check the
pressure on pressure gauge 1 fig. 81 with
the compressor off;
❒ if after 5 minutes it is impossible to
reach at least 1.8 bar,
❒ disconnect the compressor from the
valve and power socket, then move the
car forwards approximately 10 metres in
order to distribute the sealant inside the
tyre evenly, then repeat the inflation
operation;
❒ if you still cannot obtain a pressure of
at least 1.8 bar within 5 minutes from the
compressor switching on, do not drive off
and contact a dedicated Alfa Romeo
Dealership;
❒ after driving for about 10 minutes
stop and check the tyre pressure again;
remember to engage the handbrake;
❒ if a pressure value of at least 1.8 bar
is detected, restore the correct pressure
(with the engine running and the
handbrake engaged), resume driving and
drive with great care to a dedicated Alfa
Romeo Dealership.
108) 109) 110)
81A0L0079
1
A

105
PERIODIC CHECKS
Every 1,000 km or before long journeys,
check and, if necessary, top up the
following:
❒ engine coolant level;
❒ brake fluid;
❒ windscreen washer fluid;
❒ tyre inflation pressure and condition;
❒ operation of lighting system
(headlights, direction indicators, hazard
warning lights, etc.);
❒ operation of windscreen
washing/wiping system and
positioning/wear of wiper blade.
Every 3,000 km check and top up if
required: engine oil level.
IMPORTANT To find out the correct oil
quantity, always check using the dipstick.
Carry out the check with the vehicle
parked on level ground.
DEMANDING USE OF THE CAR
If the vehicle is used mainly under one of
the following conditions:
❒ trailer or caravan towing;
❒ dusty roads;
❒ short repeated distances (less than
7-8 km) and with external temperatures
below zero;
❒ engine often idling or driving long
distances at low speeds or long periods
of inactivity;
❒ you should perform the following
inspections more frequently than shown
in the Scheduled Servicing Plan:
❒ check front disk brake pad conditions
and wear;
❒ check cleanness of locks, bonnet and
boot and lever cleanness and lubrication;
❒ visually inspect condition of: engine,
gearbox, transmission, pipes and hoses
(exhaust - fuel system - brakes) and
rubber elements (gaiters - sleeves -
bushes - etc.);
❒ check battery charge and battery fluid
level (electrolyte);❒ visually inspect conditions of the
accessory drive belts;
❒ check and, if necessary, change engine
oil and replace oil filter;
❒ check air cleaner and replace it, if
required.
Using the car on track should be regarded
as an exception. The car has been
designed and produced for road use.

TECHNICAL DATA
124
COLD TYRE INFLATION PRESSURE (bar)
Tyres provided Inflation pressure (bar)
Front tyres 205/45 R17 88Y XL 1.8 205/40 R18 86Y XL 1.8
Rear tyres 235/40 R18 95Y XL 2.0 235/35 R19 91Y XL 2.0
When the tires are warm, the inflation pressure should be + 0.3 bar in relation to the recommended figure.
However, recheck that the value is correct with the tyre cold.
With snow tyres, add +0.2 bar to the pressure value prescribed for standard tyres.
If it is necessary to raise the vehicle, refer to the “Raising the vehicle” paragraph in the “Servicing and care” chapter.
SNOW TYRES
Use snow tyres of the same size as the normal tyres provided with the car: the dedicated Alfa Romeo Dealership will be able to advise
you on the most appropriate tyre to use.
Only use these tyres in the event of ice or snow on the roads.
In these conditions it is recommended to select the “All Weather” mode of the Alfa DNA system.
For the type of snow tyre to be used, inflation pressures and the specifications of the tyres, carefully follow the instructions given in
this paragraph.
134)
The performance of these tyres on low-grip surfaces are reduced considerably when the tread depth is below 4 mm. Replace them in
this case.
Due to the specific characteristics of snow tyres, in normal weather conditions and dry asphalt or on long motorway journeys, the
performance of these tyres is lower than that of standard tyres.
Their usage should therefore be restricted in accordance with their type approval.

IMPORTANT INFORMATION AND RECOMMENDATIONS
CIGAR LIGHTER
The cigar lighter gets very hot. Handle it carefully and make sure that children don’t use it: risk of fire and/or burns.
ASHTRAY
Do not use the ashtray as a waste paper basket: it may catch fire in contact with cigarette stubs.
WHEELS AND TYRES
The road holding qualities of the car also depend on the correct inflation pressure of the tyres. If tyre pressure is too low, the tyre may
overheat and be severely damaged as a result.
Do not switch tyres from the left to the right side and vice versa, in order to prevent inversion of the rotation direction.
Do not repaint alloy wheel rims at temperatures higher than 150°C.
The mechanical characteristics of the wheels might be compromised.
The car is always equipped with front and rear wheels of different dimensions. It is not therefore possible to move the wheels from the
front to the back and vice versa.
ACCESSORIES PURCHASED BY THE OWNER
Take care when fitting additional spoilers or non-standard alloy wheels: they could reduce the ventilation of the brakes and affect
efficiency in sharp, repeated braking or on long descents. Make sure that nothing obstructs the pedal stroke (mats, etc.).
CATALYTIC SILENCER
Under operating conditions, the catalytic converter becomes very hot. Therefore, do not park the car on flammable materials
(grass, dry leaves, pine needles etc.) to avoid the risk of fire.
IMPORTANT

151
Paint (identification plate) ....................121
Parking lights ..................................................17
Parking sensors .............................................77
Parking ................................................................69
handbrake ...................................................69
Passenger side front airbag
and child restraint systems ......................64
Passenger side front airbag .....................64
Performance ................................................132
Power windows ..............................................23
Pre-Fill (RAB - Ready Alert Brake)
system .................................................................52
Pretensioners ..................................................59
load limiters ..............................................60
Raising the car ............................................114
Read this carefully............................................2
Rear direction indicators ...........................85
Rear fog light/reversing light ..................86
Rear fog lights ................................................18
Rear light clusters
(changing a bulb) .............................................85
Rear-view mirror ............................................15
Refuelling .......................................................129
Refuelling the car .........................................79
Regular checks ............................................105
Remote control ..................................................9
Safety .................................................................49
SBR system (Seat Belt Reminder) ........59
Scheduled Servicing Plan .......................103
Seat belts ...........................................................57
use ..................................................................57
Seats ....................................................................13
Setup menu ...............................................32, 33
Side lights/brake lights ..............................86
Side lights/dipped beam
headlights ..........................................................17
Snow chains ...................................................126
Snow tyres .....................................................124
Spark plugs (type) ......................................122
Specifications ..............................................119
Speedometer .................................................30
Spider version ..............................................135
boot volume ............................................143
cleaning/washing the top.................138
CO
2emissions .......................................145
engine .........................................................144
front light clusters ..............................140
fuel consumption..................................145
performance ..........................................144
removable soft top..............................136
scheduled servicing ............................139
size...............................................................143
specifications.........................................142
weights ......................................................142Starting the engine ..............................68/72
Starting up and driving ...............................67
Steering wheel ................................................14
Steering wheel lock ......................................11
Tachometer .............................................30/31
TCT twin clutch transmission .................70
Third brake light
(bulb replacement) ........................................86
Towing the car .................................................99
attaching the tow ring ...........................99
TPMS (Tyre Pressure Monitoring
System) ...............................................................53
Trip Computer .................................................33
Tyres .................................................................123
Fix&Go Automatic (kit) ...............................94
inflation pressures ..............................124
snow tyres ...............................................124
tyres fitted ..............................................123
Using the Owner Handbook ........................3
Using the transmission ..............................70
Warning lights and messages .................34
Weights ............................................................128
Wheel rims and tyres ................................123
size...............................................................123
snow chains .............................................126
snow tyres ...............................................124