temperature VOLKSWAGEN JETTA 2007 Owners Manual
[x] Cancel search | Manufacturer: VOLKSWAGEN, Model Year: 2007, Model line: JETTA, Model: VOLKSWAGEN JETTA 2007Pages: 477, PDF Size: 77.6 MB
Page 227 of 477

Booklet 3.1 Controls and Equipment
Generator
This warning light signal s a m alfun ction in ge nerator.
Th e w arni ng lig ht lig ht s up when th e ig niti on
i s sw itch ed on . It sh ould go o ut when th e e ngin e
s tart s runnin g.
If th e w arnin g ligh t
lights up while driv ing .
t h e ge nera to r i s no lo nge r ch a rgi ng th e ba ucry.
Burned-out light bulb
Yo u sh ou ld imm ed ia tely drive 1 0 q u al ifie d d eale rs hip .
I l owever, you sh o uld avoid usin g elec tr ic a l
is no t ab so lut ely necessa ry be
cau se w ill d rain th e ba ttery furth er.
The warning light lights a bul b exte rior li ghtin g is
T he w arnin g lig ht light s up when a bulb i n vehicl e's exte ri or light in g is no t
Turn
Th e warnin g light fla sh es w hen sig nal s ar e bein g use d.
Depen ding on w hich tu rn signa l is opera ted, ei
th er th e lef t or in dicato r la mp fl ashes.
Bo th indi cato r light s w ill flas h at th e sam e tim e the em erge ncy wa rnin g light s are
sw itch ed on.
I f one tu rn sig nal fa ils, th e in dica to r l amp will
s tart flas hin g tw ice as
Engine coolant level I temperatu re
Th e warning symbo l li ght s if th e coolant is too high or if
coolant l eve l is too low .
There is a fault if:
• The wa rning symbol do es not go out again a few seco nds.
• Th e warning symb ol li g ht s up or fl ashes
w hil e th e ve hicle is m ov in g. Thr ee wa rnings
Thi s m ean s that eith er th e coo la nt leve l is too
l ow or coolant t emp eratur e is hi gh .
C oo lant level too low
The followin g information tex t is di spla yed: STOP Check coolant Owner's manual! 3.2 "Tip s and Advice" , c h apt er
"C oolant "
24 Instrument panel
Fir st l ook at th e coo la nt te mp eratur e gauge. If
t h e nee dle is in th e no rmal ran ge, top ofTw ith
coo lant at
ea rliest
Coo lant temperature too high
The fo llow ing in form atio n t ext is di spla yed: ST OP Check coolant Owner's manual!.
lo ok a t the coo la nt gau ge. The is 1 00 high if the need le is
over 10 th e far ri ght on th e di al. Stop the veh icle, olT the engi ne and wait for it to cool
down. Chec k th e coo lant level.
I f
coo la nt leve l is corr ect, th e ove rheat ing
m ay be cau sed b y fa n C hec k th e
r a diat or fa n fuse and have re pla ced if neces
s a ry 3 .2 'Tip s and /\dvi ce", c h apt er
" Fu ses".
Page 228 of 477

Booklet 3.1 Controls and Equipment
If the warning light ligh ts up again after d rivi ng
o n for a sh o rt dis tan ce, stop the vehicle and
swi tch off the engine. C onta ct an authorized
V olk swa gen deal er or a qualifi ed wor ksh op.
WARNING
Stop! Before working in the engine compart
ment, always read and heed all WARNINGS
3.2 "Working in the engine com
partment. " The engine compartment of any
motor vehicle is a pot entially dangerou s area
and can cause serious personal injury.
WARNING
Hot steam or coo lant can cause serious burns.
• Never open the engine hood if you sec
steam or coo lant escapi ng from the engine
compartment. Always wa it until you no longer
sec or hea r steam or coo lant escap ing from the
engi ne.
• Always let the en gi ne to cool down com
pletely before carefully open ing the engine
h ood. Hot components w ill burn skin on co n
tact.
• When the engine has cooled down and you
are ready to open the engine hood:
R emove the key from the ignition.
Engine oil pressure 9=:7:
WARNING (continued)
Apply the parking brake firmly and put
the selector in P (Park, automatic trans
mis sion) or Neutral (manual transmis
s ion) .
Keep c hildren a nd oth ers away from the
vehicle.
• Never reach into the area around or touch
the radiato r fan. Contact with the blades can
re sult in serious persona l injury.
• Alway s remember that the radiator fan is
temperature-contro lled and can t urn on sud
den ly - even when the engine has been
switched
for a longer period of tim e and the
k ey has been removed from the ignition.
• Never unscrew the coolant expansio n tank
ca p when the engine is hot. A hot engine will
h eat the coolant and put it under pressure . Re
moving a ca p that is under pressure can result
in serious personal injury and/or burns.
• Alw ays protect face, hands and arms from
h ot escap ing coo lant or steam by cover ing the
cap w ith a large, thick rag.
• Turn the cap slowly and very carefully in a
co unt er-clockwise direction while applying
light downward pres sure on the top of the cap.
• Never sp ill antifreeze or coo lant on the ex
haust system or hot engine parts. Under some
co ndit ions, the ethylene g lyco l in engine
coo lant can catch fire.
This warning symbol indicat es that the en gin e oil pressure is low.
I f thi s wa rning symbo l s tart s to flas h. an d thr ee
w arning s sound , sw itch th e e ngin e and ch ec k
th e oi l leve l. Top off with en gin e oil if necessary
3.2 "Tip s an d Adv ic e" , ch ap te r "E n
g in e o il."
The follo win g inform ation text is disp la ye d:
ST OP Oil p ressure Engin e off Owner 's manual!.
If th e sy mb ol fl as hes eve n though the oil l eve l is
co rrec t, do 11 01 drive on. D o not le t th e engine
idl e. Co nta ct a n authori zed Vo lksw age n d eale r
or a qua lified wo rksh op .
Tip s
Th e oil pre ssure wa rnin g symbol is not an oil
l eve l ga uge. Check the o il leve l reg ularl y, pre fe r
a bl y every time you get gas .
Instrument panel 25
Page 234 of 477

Booklet 3.1 Controls and Equipment
Opening and closing Keys
Key Set
Your vehicle's key set co ntains:
• two folding master keys
re m ote co ntrol
and panic bu 11on
• one va le t key
• one key
wi th key numb er.
Key tag
I f yo u n eed a re plac em ent key, tak e yo ur key
vehicl e.
If yo u se ll th e ve hicle, b e sur e
10 g ive the key 10 n ew ow ner.
WARNING
Improp er use of vehicl e keys res ult in se
riou s per sonal injury.
• Alwa ys tak e th e ke y with you when you
l eave the ve hicle. The engine can be sta rted
and vehicl e sys tems su ch as the pow er win
d ows ca n be operated leadi ng to serious per
s onal inju ry.
• Never le ave childr en, di sabled p ers ons or
anyone who canno t help them se lves in
ve
hi cle. The door s can be lo cke d using re
mot e co ntrol k ey. Thi s cou ld result in people
be ing trapped in
ve hicle in emerge ncy.
For exampl e, depending on the time of year ,
p eop le trapped in the vehicle can be exposed
to
high or low temperature s.
£0 WARNING (contin ued)
• Never re mo ve the key from steer ing lock
w hil e the ve hicle i s mo vingorwhile is rolling
lo a stop. The steering whee l co lum n will lock
up and you
not be able to ste er or contro l
the vehicl e.
N ote
• The k eys with th e re m ote c ont ro l electronic co mpo ne n ts. Pro tec t the se keys from
m ois ture an d roug h hand lin g.
• Never leave any vehicle keys in sid e th e ve
hi cle . Entry by unauth orized perso ns co uld
ha rm the ve hicle or yo ur ve hicl e co uld be s tolen.
A lway s tak e th e keys w ith you wheneve r yo u
l e ave your vehicl e.
numb er.
• The key numb er id entifi es th e
th e key
ha s 10 b e cut and all ows the mi croc hip in the key
t o be program med to work wi th the co ded elec
troni c imm obili zer in your vehicle .
• A key withou t the specia l micro chip or w ith a
c hi p
has 11 0 1 be en coded prope rly w ill not
wor k w ith your ve hicle, even if it has bee n cut
co rrec tly.
• Additiona l re m ote contr ol keys arc availab le
from auth orized Vo lksw agen dealer s. Each key
mu st be pro gramm ed to wo rk
yo ur vehicle .
• Yo u can use up to fo ur r em ote co ntro l keys
w ith your vehicl e . ._
Opening and closing Keys 31
Page 238 of 477

Booklet 3.1 Cont rols and Equipment
WARNING (cont inued)
• Never leave children, disabled persons or
anyone who cannot help themselves in the ve
hicle. The doors can be lock ed with the ce ntral
locking button. This could leave peo ple
trapped in the vehicle in an emergency. People
trapped in the vehicle can be exposed lo very
high or low temperat ures.
• Heat build-up in the passenger compart
ment and luggage compartment of a parked
ve hicle can result in temperatures in the ve
hicle that are much higher than the outside
t emperatures, particularly in summer. Tem
perature s can quickly reach leve ls that can
cause unconsciousness and death, particu
l arly lo small children.
Child safety locks
WARN ING (con tinued)
• Never allow passenge rs lo remain in a
lock ed vehicle. Locked doors can delay assis
tance to vehicle occupants and rescue from
the outs ide in the event of an emergency. In an
emergency any person still in sid e th e vehicle
might not be able to get out.
Tips
Wh en you lock your ve hicle with the central
l ocking button:
• The doors and the rear lid cannot be ope ned
from the out sid e ( fo r your safety, for examp le,
when stopped at a traffic light).
• If yo u tr y to lock the vehicle using the central
l ock ing button while the driv er's doo r is still
open, the driv er's door will not lock. This feature
pr eve nts you from locking yourself out of the
The child safety lock prevents the rear doors from being opened from the inside .
Fig . 17 20 Child safety lock in the rear left door, A
- sw it ched off, B - switched on
The rear doors have a child safety lock . You
can use any vehicle keys to engage or dis
engage the lo ck.
Engaging the child safe ty lock
- Use a vehicle key to turn the slot in the
door to the position sh own in =£l g. 1 7
I
=ii g.18
Fi g. 18 C hild safe ty loc k in the rear r ig ht doo r, A -
swit ched off, B -sw itched on
Di sengaging the child safety lock
Use a vehicle key to turn th e slot in the
open door to the position shown
The child safety loc k can be activat ed to pr eve nt
chi ldren ope ning th e doors by accident. When
the child-pro of lock is act ivated, the doo r can be
opened from the o utside only. The ch ild safe ty
Opening and closing Keys 35
Page 241 of 477

Booklet 3.1 Controls and Equipment
WARNING (continued)
• Never transport objects larger than those
fitting completely into the luggage area be
cause the rear
cannot be fully closed.
• If you absolu te ly must drive with the rear
lid open, observe the following notes to reduce
the risk of carbon monoxide poisoning:
Close all windows ,
Close the power roof,
Open all outlets in the in strument
panel,
Swi tch off the air recirculation,
Set the fresh air fan to the highest speed.
• Never leave yo ur veh icle unattended or let
ch ildr en play around your vehicle , esp ecially
with th e rear lid left open. A child could craw l
into the vehicle through the luggage com part-
Closing the rear lid
Place you r hand into one of the hand le
rece sses in the in sid e trim of th e re ar lid
and pull the rea r Lid do wn.
If the vehicl e is loc ke d (anti-theft alarm syste m
act ivate d ) and the r em ote co ntrol k ey is use d t o
o p en
rea r lid onl y, th e rea r li d is loc ke d im
m ediat ely w hen it is cl ose d. A ll turn sig n als flas h
bri efl y as co nfirmati on.
A di spl ay ap p ea rs in the in strum en t clu ster if th e
r e ar lid i s not properl y close d.
WARNING
Always close the rear lid properl y to help avoid
ser iou s personal injury.
• Never let anyone
in the way of the of the rear lid or its hin ges when the rear lid is
closing.
• Always make sure that the rear lid closes
properly when you close it so that
it cannot
open s udden ly while the vehicle is moving.
38 Opening and closing Keys
WARNING (cont inued)
ment and pull the lid shut becoming trapped
and unable to get out. Being trapped in ave
hicle can l ead to ser iou s persona l injury.
• Heat build-up in the passenger compart
ment and luggage compar tmen t or a parked
vehicle can result in temperature s in the ve
hicle that are much high er than the outside
temperatures, particularly in summer. Tem
pera tures can quickly reach leve ls that can
cau se unconsciou sn ess and death, particu
larly to sma ll ch ildr en.
Tips
At t emp era tur es below O • th e re ar lid will not
o pe n aut om atic all y a ll th e w ay afte r unl ockig it.
I t wil l b e necess ary to lift it by hand
WARNING (continued )
• Never leave your vehicle unattended or let
ch ildr en p lay around your vehicle, especially
w ith the r ear
op en. A child could craw l
into th e vehicle through the luggage compart
ment and pull the lid shut becom ing tra pped
and unable to get out. Being trapped in ave
hicl e can lead to serio us per sona l injury, esp e
cially when it is very hot or co ld.
• Nev er le ave c hildren, disabled per son s or
anyone who ca nnot help themsel ve s in the ve
hicle . The doors ca n be locked using the re
mot e co ntrol key or the central lo cki ng button.
Th is cou ld result in peop le being trapped in
the veh icle.
• Hea t b uil d-up in the passenger compart
ment and luggage compartm ent of a parked
vehicle ca n result in temperatures in the ve
hicle that are much higher than the outside
t e mperat ures , particularly in summer. Tem
peratures can quick ly reac h leve ls that can
cau se unconsciousness and death, particu
larl y to small children
Page 285 of 477

Booklet 3.1 Controls and Equipment
WARNING (continued)
• Always make sure a ll windows arc clear of
ice, snow, and conde nsa tion for good v is ibili ty
-out the wind shi eld , side and rear w indows .
• Max imum heating output and fast
frosting w ill only occur after the en gine has
Applies to vehicles: with Climo tic
Heating and cooling the interior
WARNING (continued)
reache d operat ing temperature. Wait until you
h ave good v is ibilit y befor e driving
• Thoroughly fam iliar ize yourse lf wi th the
op erat io n of lhe hea tin g and vent ilation
sys tem, including the defog/defrost features
you w ill ne ed for good visibilit y.
• Always read and heed the inform ati on and
a ll
The set tempe rature is maintained a.ulOmatically .
Fig. 68 I n the cen ter conso le : C limo te co ntrols
Heating the interior
- Turn the temperatur e selector 68
to the right until the desired heat output
i s reached.
- Turn the ran switch © to one of the
tin gs
- Use the air di stribution to
g uid e th e air whe re you want (to
the wind shi eld l.@( into the vehicle
(to th e foot wells) th e
w ind shi eld and to th e footw ells).
Cooling the interior
- Sw itc h on the coo ling sys te m b y
pre ssing th e =efig. 68 IECONI button (the
l amp in the button should
1101 b e lit up).
82 Air conditioning system
Turn rhe temperature se lector to the le ft
until the des ired coo ling outpu t is reach ed.
Turn th e fan switch to one of the
tin gs
- Use the air d ist ribution control to
g uide the ai r flow wher e you want
(lo
th e windshield).@ (into the vehicle inte·
ri or).@j ( to the foo t wells)
(to the
w in dshi eld and to th e footwell s).
Heating
Maximum output , w hich i s need ed to fr os t the quickly , is on ly available when
the engin e rea ch ed its ope rating
Page 287 of 477

Booklet 3.1 Controls and Equipment
Climatronic
Applies to vehicl es : with Climotronic
Controls
controls a llow sepa rate adjustm ent of conditioning settings for left
side and right side of the vehicle.
Fig. 69 On th e cen te r conso le: Climatran ic co ntrols
The ai r co nd iti on ing syste m only works
w hen the eng in e is ru nnin g and the fan is
sw it ched on.
To adju st th e temperatur e for the left o r
r ight sid e, turn the appropriate tempera
tur e contro l
69
T he functio ns w ill b e switc hed on when
o ne of the button s
is pre sse d.
W hen a function i s switched on th e light in
th e button illuminates. Press the b utto n
again to switch off the fun cti on.
The te mp era tur e ca n be adjusted separ ately for
th e left and right sid es o f the ve hicle in te ri or.
Display of the sele cted interior temp eratur e
for th e le ft side.
r ec ircu la ti on mod e 88
air di strib ution
air dis tribut ion
up war d air d istrib ution
Display of th e se lec te d int erior temperature
for right sid e.
84 Air condit ioning sy stem
defro st function for the w ind
s hi eld. The air dr awn in from outs id e th e ve
h icle i s dire cted at th e winds hield . The air
r ecirc ulation mode, if swi tched on, will be
sw itch ed off as soo n as the defro st fun cti on
i s sw itched on. At temperatures above
(3 the air co nditi oning system will be
sw itc h ed on automatica lly and th e fan
s p eed
w ill be in crease d by one leve l in ord er
to dry the a ir.
The hea ting
switc hes off au tomat ica lly app roxima te ly JO mi11111 esafte r it i s sw itched on. It can a lso be
sw itch ed off by push ing th e sw itch again.
Temperature contro l for the lef t side 85
Fa n sp ee d co ntrol 87
th e C limatro nic on a nd
o ff 87. When th e sys te m i s off t he
li ght in the OFF button w ill illu minate .
Button (AUTO) , automatic te mperature , fa n,
and a ir dis tri bution control 8 5. Th e
se ttin gs are stor ed for the dr iver s ide and the
front passenger side if the butt on is pressed
fo r m ore than t wo sec onds.
Page 288 of 477

Booklet 3.1 Controls and Equipment
I ECONJ b utt on sw itche s on economy mode.
W hen t he in th e bu tton lights up , the
coo ling sys te m i s sw itch ed off to save fu el.
Temperat ure contro l fo r the r ig h t sid e
WARNING
Sta le air c auses driver fa tigue an d reduces
dr ive r ale rtn ess. T his ca n lead to accide nts,
c olli sio ns and ser iou s perso nal i njury.
• Neve r use a ir reci rc ul atio n for l ong peri ods
o f t im e beca use no fres h air will come in to th e
p assenger co mpa rtm ent.
Ap plies to vehicles: with Cli matronic
Automatic mode
WARN ING (con tinued)
• The w indows ca n fog up qu ick ly if th e
coo ling system is sw itch ed off a nd d ecrease
dri ver visib ility.
• Always switc h th e rec irc ulati on m ode
when is not nee ded .
Not e
Do no t smoke while air rec ircula tion mod e is o n,
a s s mok e
in to the cl imat e-co ntro l sys te m
ca n leave a residu e on the evaporator , producing
a permanent un pleasant odor.
In mode air temperature, flow, and dist ribution ar e automatically reg
ulat ed so that a specified temperature is attained as quickly as possible and then
maintained.
T he te m pera ture ca n be adjusted sepa
rately fo r th e
84, fig . 69 .
T he but ton li gh ts up .
- Turn t he tempera ture co ntro ls
1 0 th e
de sir ed te mpera tures fo r th e le ft and ri ght
s id es of the int erior. We recomm end
84, fig. 69 and th e !ECON ] button a t
th e same time unt il th e te mpera tu re di s
pl ay sw itch es from o ne te m pera tur e unit
t o t he ot her .
A c omfort ab le interior clima te is qu ickly re a ched
wh en a te mpera ture °F (22 °C) is se t in aut o
matic mode. It can be chang ed a s nec essary to
suit indi vid ual pre fe rences or parti cu lar cir cum
s ta nces . It i s po ssible to select interior te mpera
tur es from 61 °F (16 °CJ to 86 °F (29 .5 °CJ. These
ar e approxima te temp era tur es a nd the actual
t e mpera tu re ma y be sli gh tly hig h er or lo we r de
p end ing on t he ou ts id e co nditi ons.
C lim atroni c automa tica lly m aint ain s a con sta nt
t e m pera tu re leve l. Th e te mp erature of the air
s u pp lied to th e interior , th e fa n sp ee d and the air
di str ibution are also reg ulated a utomat ica lly.
T he sys te m als o all ows for th e effe ct of stro ng
s unl ig h t, so th ere is no nee d for you to r e-a dju st
th e sys tem. Therefo re, aut om atic mode pro
v id es th e be st comfort for the vehicle occ upant s
in all cond itio ns thro ugho ut the yea r.
A utom atic mode is switche d
an ad
justm en t is m ad e usin g th e but to ns fo r air dis tri
b ut io n or the fan control. The te m pera tu re co n
tinu es to be con tro lled.
Air conditi oning sy ste m 85
Page 290 of 477

Booklet 3.1 Controls and Equipment
Applies to vehicles: Climofronic
Manual mode
In man ual mode you. can temperature, airfl ow, and distribution
yourself
Fi g. 7 2 On the center conso le : Cl imotronic controls
Switching on manual mode
-Press one of the butt on s 72 to
(+16 °C ) is se lec te d
th e di sp lay switch es to LO. In thi s setting the
syste m runs at max imum cooling ou tput and
th e te mp eratur e is
11 0 1 co ntroll ed.
If a tempera ture abov e
86 °F °CJ is se lec te d
th e di splay switches to HI. In th is se tting th e
sys te m run s
maxi mum hea tin g o utput and
the te mp erature is no t con tro lled .
Fon
Th e fa n ca n b e adj uste d th e fan Always have the runnin g at low sellin g
w hen driving low speeds to s ur e th ere is fl ow offresh air into th e ve hicle. If th e is se t to 0, the C lim atro nic switc he s o ff.
Air dist ribution
U se the an d@t o co ntrol the air
d is tr ibuti on. Whe n a fun ctio n is sw itch ed o n,
the button li ght s up. It is also pos sibl e to ope n
a nd close so me of the air ou tlet s se parat ely.
Sw itching the Climotroni c on /off
Th e C limatroni c sys te m can b e sw itch ed on and
off with th e The sys te m sh oul d on ly
b e off in exception al cases, e.g. if the
sys te m m alfu nct io ns. Th e butl on light s up whe n
th e sys te m i s sw itch ed off .
Switch ing on the economy mode
Use the(ECONJ bu1ton to sw itch on th e econ omy
m ode . W hen th e bu no n li gh ts up, the coo ling
sys te m sw itch es off to sa ve fue l.
Air conditioning system 87
Page 299 of 477

Booklet 3.1 Controls and Equipment
Ap plies to ve hicles : with a di esel engine
Starting the diesel engine
The engine can only be started a genuine Volkswagen key the correct
code.
- Move the se lector lever to P (Park) or N
(Ne utral )
98.
- Dep ress the foot brake. In vehicles with
manual transm iss ion d epress th e clutch
pedal.
- Turn the igni tion key to position
93, 76 The g low plug
warni ng light light s up while the glow
plug s are warm ing up.
- When the warning light goes out, turn
the key to pos ition
93, fig. 76
sta rt the engine. Do not press the acc eler
ator.
- Release the ign itio n key as soon as the
e ngin e starts to avoid damaging the
start er.
When start ing a cold eng ine, it may be a litt le
nois y for the fir st few se conds until oil pre ssur e
h as bui lt up in the hydrauli c
valve lift ers . This is
normal and no cause for conce rn.
When staring a warm engine, the pre -glow
warning light will no t li ght up. You can sta rt the
e n gi ne immed iate ly
If yo u ha ve problems sta rtin g
3.2 "Tip s
and Advice", chapt er "J ump startin g."
Di ese l e ngin e pre-glow system
Wh ile pre- glow is acti ve , n o major elec trical
lo ad s s hou ld be switched on -oth erwise unnec
ess ary load is pla ce d on the vehicle battery.
You should start the engine immediate ly after
th e pr e-g low indica tor lig ht has gone out.
96 Driving
To start the diesel engine after the fuel tank has
been run dry
If the fuel tank was run comp lete ly dr y, the
s tartin g proc ess after refueling with die sel fuel
can take long er th an usual -up t o one minute.
Th is is be cause th e fu el sys tem fir st ha s to be
vented of a ir wh ile starting.
WARNING
H edu ce the risk of ser ious per sonal injur y
when startin g and running the vehicl e's en
g in e.
• Never start or le t the engine run in a con
fined or enclosed are a. Exha ust from the en
gi ne contain s carbon mono xide , a poisonous,
co lor less and odo rless gas. Carbo n monoxide
ca n cause unconsci ousness and death .
• Neve r leave the vehicle unatt ended with
the eng ine runnin g. The vehicle could mo ve
s udd enly or an unusual operating condition
co uld occur res ultin g in prop erty damage or
personal injury.
• Neve r use "sta rting ass is t fluid s." They arc
po tentia lly exp los ive and can ca use a " run
away" vehicl e co ndition .
Note
You can
the eng ine if you drive hi gh en
g ine speeds, at full th rottle or by overloading the
en gin e whe n it i s cold.
For the sake of environment
Do not warm up the engine by running it with
th e ve hicl cstandin gstill. Drive off as soo n as yo u
s tart the e ngin e. T hi s help s th e e ngin e
o p
e ra tin g temperature fa ster and r edu ces
emissions .
--4