brake VOLKSWAGEN GOLF 2007 Service Manual

on. the bra ke sys tem warning symbol or
If a malfunction occurs in the ABS. the warning light light up togethe r the brake o r
39. T he e ngin e com partment of any motor ve hicle is po te ntiall y dangerou s area and can cause serious personal injury.
Dri vin g w ith ba d brakes can cause a c olli sion and serio us person al injury.
does n ot go out, or if it lights up w hen driving the brake fluid level in the reservoir is too lo w or there is a f ault in the brake syste m .lmmedi-
Brake Assist System (BAS)
In an emergency, most drive rs brake in time, but not p in g dista nces that are longer than they have to be!
T he
brake assis t sys te m helps: if yo u p ress the b rake pedal very quick ly , th e brake assist sys te m
regi sters an emergency situation.
can be activated more quickly and ciently, reducing th e brakin g distance while ting you steer at the sam e tim e.
Do no t reduce th e pressure on the brake pedal.
T he bra ke switches off cally as soon as you re lease th e bra ke. The brake assist system work s onl y w hen the engi ne is
nin g.
A lways adjust yo ur speed and driving sty le to road , weather condit io ns.
{continued)
a te ly s to p dri ving a nd ta nce=> page 53.
symbol BRA KE or lights up a t the same ti m e as th eABS warning light the may not be working pro perl y and th e rear w heels could lock up first under
hard braki ng. Rear wheel brake lock-up can cause loss o f vehicl e control. If yo u believe tha t it is safe to do so, go imm ediately a t low speed to the nearest autho rized V olkswagen
dealer o r
w arning light does no t go o ut, or if it comes on w hil e driving, the
your autho rized
V o lkswagen deale r o r qualifi ed wo rkshop as soon as possible.
(continuod)
Neve r let the ex tra safety offered b y the
B rake Ass is t
The Brake Assis t Syst em canno t reduce the
risk o f a n acci dent, fo r example i f yo u drive too fast fo r conditions or if yo u d o not keep your distance from the vehicl e in front of yo u.
S li ppery and we t roads a re dangerous even with the Brake Ass ist Sys te m!
Always re m ember tha t vehi cle alterations
o r m odificati ons can affect the functio n oft h e syste m s. Exa mples of
these alteration s or modifica tions include a different w heel/tire com bination and brake or chassis m odificati on s=> page 32, "Repairs a nd
t echnical m odifica tion s".
the vehicle su sp en sion or u sing unapproved tire I rim combinati on can ch an ge the way the
Smart

The Anti-Lock Brake System prevents the wheels from locking up when the brakes
are applied.
The is an
works only when the engin e is running.
How the ABS works
I f
one w hee l beg ins to turn too slow ly in relat ion to vehicle spee d and tends to lock up, the automati cally redu ces brak e pressure to pre vent
that w heel from lock ing up. When is doing its job you will notic e a slight vib ration through the brake ped a l a nd hear a noise to le t you know
that your speed must be adjusted to road, traffic and weather co ndition s. Thi s is a warni ng that one or more of th e whee ls is about to lock up and
that th e control function has intervened. In
thi s situati on it is important to keep th e br ake
peda l full y depressed so th e the
b rake ped al-cannot do its job if yo u do .
helps you to keep the vehicle under control
because it pr eve nts th e w hee ls from locking up w hen the brake s are a ppli ed. Thi s m ea ns th e hicle can still be s teered and is less likely to skid.
Th e
cannot necessarily shorte r
braking dis tances in con dition s. The brakin g
di stance ca n eve n be longer if you brake on gravel or on fres h snow c overing a slippery face.
If
i s not fun ctioning properly, a warning
light will co me pag e 5.
4 Smart technol .ogy
Always adjust your speed and driving style to
road, tra ffic and weather co nditions. Never let the ex tr a sa fety that
Alwa ys drive safely.
cannot change the laws of physics.
S lipp ery and wet roads are dangerous even
withABS!
cannot reduc e the risk of accidents,
for example if you drive too fast for the tions or if you do not keep your distance from the veh icle in front of you.
Always remember that vehicle alteration s or modifications can affect the function oft he
page 32, and te chnical modifications".
Changing the vehicle suspension or using unapproved tire
systems work and reduce their effectiveness.
The effec tive ness of is also determined
b y the tir es on your pag e 57 ,

The wa rnin g light ABS does not light up w hen th e ignit io n is switched on .
T he wa rnin g lig ht does not turn off again afte r a few seco nds.
The wa rnin g light light s up whe n the vehicle
i s m ov ing.
Th e ve hicle can still be braked in the normal (except th at the is not active). dealer or a qualifie d works hop as soon as po ssible.
If a fault occurs in theABS. th e
sys te m warning lights BHAKE and/or , th e fective , but there is also possible malfun ction in th e brak e sys te m
Th ere may be a messag e in the in strumem cluster informing yo u or advis ing you of the
Before working in th e e ngin e ment, always read and h ee d all
Driv ing wi th bad brakes can cause a collisio n and seriou s perso nal injury .
If the does not go out, o r i f it up when dri vin g
th e brake fluid leve l in the reservoir is too low or there is a fault in the brake system. ately stop driving and
I f the brak e light s up at the same time warning light ABS or , th e may not be wo rkin g properly and the rear wheels could lo ck up first under hard braking. Hea r wheel brake lo ck-up ca n cause loss of ve hicl e control. If you b elieve that it is to do so, go ately at low sp ee d to the nearest authorized Volkswagen dealer or qualified workshop and have the brake sys te m inspected. Drive slow ly and avoid sudden, hard brake application .
out, or if it comes on while driv ing, the
w ill not have the protectio n provides. Con tact your rized Volkswagen deal e r o r qualified s hop as soon as possible.
Smart technology 5

does th is by braking the whee l that h as lo st trac tion an d dis tributing more
driv ing force to the other driven wheel via the differen tial.
EDL i s active at speed s up to about mph
not that the EDL has been shut off.
EDL wi
ll automatically switch on again when the brake
Always adjust your speed and driving style to
road,
When accelerating on a slippery surface,
for example on ice and snow, press the accel­erator carefully_ Despit e EDL, the wheels m ay
start t o spin leading to a loss of vehicle control.
Always remember that vehicle alterations or modifications can affect the function ofthe EDL and
page 32, and te chnical m odifications".
Changing the vehicl e s uspension or using unapproved tire rim combination can
change the way the EDL and systems work and reduce their e ff ectiveness_
6 Smart
The E lectronic Stabilization con­
tai ns the E lectronic Differential Lock (EDL) and the Anti- S lip Regulation (ASR). The
or sy s te m s malfunction.
The is sta rted automatically when the en­gine is started.
The should generall y be left switched on at
all times. In specific circumstances where yo u
requ ire less by l.
For exampl e:
whe n driv ing w ith snow chains,

when dri ving in deep snow or on loose faces.
w he n r ocking the ve hicl e out.
Switch
ba ck on w he n yo u no longer need wheel s pin. The
remains switch ed oiT.
Ho w
works
The electroni c stab ilization progra m
helps to reduce the ris k of skiddin g braking th e w heels individually. works o nl y
w he n th e e ngine is ru nning.
The sys te m uses th e steering whee l an gle and road speed to calculate th e changes of tio n desired by the driver, and constantl y pares thi s informat ion with the actual behavior of the vehicl e. accurately ( for example if the hicle is beginni ng to skid ) tomatically by applyin g th e at the priate wheel.
The forces acti ng on the braked wheel help to
b rin g the vehicle back on course. th e ve hicl e is tending away at the rear, the brake
wide r dius in a curve. th e brake is mainly applied to the
in sid e wheel.
How the Anti-slip regulation
reduces engine powe r to he lp preven t the driven wheels of front-wheel d rive vehicles
losing traction during acceleration. The sys te m works in the entire speed ra nge in conjunctio n
with fails , the will a lso be out of action. h elp s the ve hicl e to moving. accele rat e and climb a grad ient in slipp ery d itions wh ere thi s may o therwise be diffi cult or even imposs ibl e.
When do the indicator light and the button come on or flash?
T he indicator light comes on for about
2 seconds as o perati o nal check when the
3.2 Tips and Advice
The indicator ligh t flashes while yo u are driv ing when the is wo rking.
They come on if there is a malfun ction in the
They come on when the
Th ey also come o n in the event of an malfunction because the system works in conjunction with the ABS.
the indicator light comes on immedia tel y
a fter the engine is started , th ere m ay be a
sys tem-controlled deactivation. You can vate the tion off and on agai n. th e in dicator ligh t
goes out , the sys te m is full y ope rational again.
the battery has been disconnected, th e
A lways adjust your speed and driving style to road, traffi c and weather conditions. Never le t the extra safety that can provide tempt you into taking extra risk s.
Alway s drive sa fe ly .
and
cannot reduc e the ris k of cident, for example if you drive too for conditions or if you do not keep your distance from the vehicle in front of yo u.
Although
Always remember that vehicle alterations or modificatio ns can affec t the functio n of the EDL and
different wheel/ tire combination and brake or chassis modifications=> page 32, and technical modifi cations".
Changing
EDL and sys te m s work and reduce their effecti veness.
Smart

miles
can b e gradually in creased to
th e maximum vehicl e s
peed or maximum
permissibl e engin e speed (rpm ).
Breaking in tires and brake pads
Durin g the fir st few h o u rs of dri ving, the g ine 's inte rnal fric tion is hi gher than it will be
l a te r w he n a ll th e m ovin g part s have been bro ke n in.
For the sake of environment
th e eng in e is bro ke n in gentl y, the lif e of the engine will be in creased and it s oil co nsumption
New tires should be broken in carefull y for the fir st miles (560 km). New brake
pads b e broken in carefu lly for the first miles (240 km).
Durin g th e fir st miles km l. you can
c ompe nsate for the reduced brak ing effect by apply in g m ore press ure th e brake pedal.l fyo u
need to make a n em ergency slOp, the brak ing
di sta nce will b e longe r w ith new brake pads than
wit h brake pads wh ic h have been b roke n in.
WARNING
New tires and brake pads do not provide imum gri p, control o r braking
(cont;n ued)
To reduce the ri sk of losing a
miles
New brake pads do not have th e best pin g power for the fir st km) and must be broken in. can compe nsate for the s lightly reduced braking effect b y applying more pressure on the brake pedal.
N eve r follow other vehicles to clos ely or put yours elf into other situati on s that might require sudden, h a rd braking especially when the brake pads have not been broke n in.
12 Driving and protecting the environment

Booklet 3 .2 Tips and Advic e
recommend that you have the
thi ckne ss of your brake pads checked by an au­
t horized Vol kswagen dealer mo re fre quent ly
t h an recommende d in the serv ice sched ule.
you drive with wet brakes, for example afte r a
dri ving through water, after heavy rainfall or after washing the ve hicle, braking power be
reduced and s to ppin g distances will be longer
because the brake discs will be we t or in winter mayb e eve n frozen-the brakes must be dried
with several ca re ful brak e applicatio ns.
Brak e fluid absor bs water
and must be changed
every two years. Heavy use of the brakes can cause vapor lock if the brake fluid is too old.
Vapor lock redu ces braking power, increases
stopping distances and ca n even cause total
brake failure.
New tires and new bra ke pads do no t pro­
v id e m aximum gri p, control o r b raking abil ity.
To red uce the risk of l osi ng control, a s io n an d se rio us perso nal injuries, drive with
specia l ca re for the first 350 miles (560 km).
New brake pads do not have th e best sto p­
ping power for the fir st ISO mile s (240 km ) and
m ust be b roken in. can compensate for the slightly reduced braki ng abil ity by dri ving care and applyin g more pressure on th e
brake pedal.
Never follow oth e r veh icles to close ly or
p u t you rse lf in to other s ituations th at might
requ ire su d den , hard bra king especially when the brake pads have not been broken in.
apply brakes for a test.
Always dry brakes and clea n off icc coat­
i ngs an d salt coatings with a few cautious brake applications.
A lways read and heed in in tire s and brake on page 12.
Always avoid overheati ng the brakes!
When driving downhill, t11 e brakes have to
work har d and h eat up quickly.
Before driving down a lo ng, steep hill, al­
ways reduce speed and downshift to a lower
gear. This will let the vehicle usc engine
Always ch ange th e brake fluid at l east
every two years. Hard braki ng wi th o ld flui d may cause a va po r lock . Vapor loc k duces powe r, inc reases stoppin g di s­tan ces and can even cause tota l b rak e failure.
A damaged front spoiler or n ew non stan­dard spoiler can reduce t h e airflow to th e
brakes and cause them to ove rh eat.
Always see an authorized Volkswag en
dealer or qualified workshop
Be sure to re ad and heed all and th e page
Driving and protecting the environm ent 13

For dri ving safely. always follow the specified
maintenance int erva ls in your mainte na nce booklet 1.1 ciall y for changin g the brake fluid. Hard u se, maril y stop and go driv ing, o p eratio n in very dusty area s. trailer towing as well as other tions may make it necessary to short en nance in te rvals-see your a u th orize d swage n dealer.
Your
l ow ing po int s befo re yo u drive off:
lights and turn signal s.
Make sur e that all ligh ts and all windows are
clea n.
Adjust the mirro rs.
Make sure th at the a ir intake slots between the e ngin e hoo d and the w in d shi eld are free of leaves . s n ow and ice.
wa rnin g and indicato r light s whe n
s ta rti ng the e ng in e.
Your personal driving styl e and attitude have a
lot
to do with safety.
Th eref ore, for yo
ur ow n safety:
Wear your safety belts and wear the m
book let 2.1 chapter
Make sure that all passenge rs their safe ty be lls properly. eve n those sitting in the book le t2.1 chapter Passengers not wear ing safety bells
Make sure that chil dren always sit on the rea r seat properly restrain ed by
Neve r transport chil d in a r ear-faci ng c hild or infant seat on the fron t passe nger seat booklet2.1
Adjust you r seat that yo u can easily reach
all control s while yo u are as far away from the airbag as pos sibl e but not close r than
bookle t2.1 and bookle t3. 1
The seatin g position is ve ry important for th e
a ir bag book let2.1 chapter" Air bag
Always adjust the head rest ra int s to the rect heig ht. For maximum pro tection. adjust the
head restrai nt so the upper e d ge is as eve n
w ith the top of your head a s pos sibl e, but no lower than eye level and so that it is as close th e back of your head booklet 2.1
Always make s ure that th e movem ent of the
p ed als is not re stricted in any booklet 3.1 Equipment",
Sto re lu ggage and light it em s properly in the
lu ggage compartment and on th e roof bookle t3. 1 and Luggag e compartment " and book let3.1 and Equipment", chapte r " Roof
If you drink, do not drive!
The use of alco hol. drugs and certai n tions will seriou sly impa ir percepti on , reac tio ns and dri ving ability, substantially in creasin g the risk of an acc ident, cras h and persona l injury.
Do not driv e if you are tired.
Make frequ ent rest sto ps, least afte r every two hours of dri ving.
Always
adapt vehicle speed to traffic, rood and
weather conditions.
R e
member, that especially on sm oot h. slipp ery
roa ds, ve hicl e ha ndl ing and brak ing depend a
g reat deal o n tire adhes ion. wet roads, the
f ront w heels can h ydropla ne, especi ally at
hi ghe r speeds. th is happen s, yo u will then no
lon ger be abl e to steer or brake properly.
Alwa ys observe the p osted speed limits and common sense. good judg m ent can mean the diff ere nce b e tween arriving safely at your d estination and being seriou sly injured in a cras h or othe r kind of accident.
14 Driving and protecting the environment

An improperly installed or incorrec t hitch from the towi ng vehicle leading to serious personal in­juries.
Neve r in stall a on your vehicle . The vehicl e was not designed for these kin ds
o f trailer hitches. The hitch attachment to tear loose from the
ve hicl e.
When you n o longer need t o tow trailer, re ­
move the trailer hitc h . Alway s seal all bolt holes to prevent water and deadly exhaust fumes entering the ve hicle.
Operating instructions
Maximum trailer weight
You can only tow typical class I or class 2 trailers
with your vehicle.
T he m ax
imum gross trailer we ight and the tongue load must n ever exceed the specifica­
tion s listed bookle t3 .3 "Tec hnical
Neve r exceed the gross ve hicl e we ight, w hi ch i s the we ight o f th e vehicle, includin g driver, pas­senge rs, luggage, trailer hit ch and tongu e we ight of the loaded trailer.
At alt itudes above ft. m), redu ction of of combined towin g weight (ve hicl e plu s trailer) for the beginning of every m ) should be observed.
Trailer l
oad distribution
Be sure the load in the traile r is held securel y in place to guard agains t be it forw ard.
b ackwar d or sideways. A load that shift s can make it hard or even impossibl e to control your vehicl e, parti cularly in an e m erge ncy situ ation.
W ith the tow vehicle empty and the trailer
l oade d , we ight distribution is es pecially bad. If
yo u absolut ely mus t driv e w ith this combina­
tion, d rive with extra
Do not use a trailer whic h has LED (light emitting diodes) taillig ht s. This type of t a illi ght can damage the electrical co ntrol unit of your veh icle.
If the traile r socke t is in co rrectly connected .
damage co uld result to the ve hicles electrical
system.
I f th e maximum power consumption for the
trail er is pag e 15, damage could re­sult to the e lectrica l sys te m of th e ve hicle.
Never connect the e lectr ical sys te m for th e
t raile r directly to the electrica l c o nne ctions for the rear lights or to other unsu itable power sources. Use onl y a su itab le trailer soc ket to pro ­
vide power to the trailer .
Tongue load
For bes t ve hicle ha ndli ng when towing a trail er, adjus t the trailer load so tha t th e tongue load is at the maximum allowable or slightly lower. You can ge t an approx imation of the to ngu e load
with a ba throom scal e or yo u can measure the load at a tru cking company or we ighing station.
The tongu e load incre ases the weigh t of the rear axle and correspondingly reduces the other load that your ve hicle ca n
The max im um tong ue load on ly a ppl ies if both of the ho les o n the o uter upright wall of th e rear side rail are used to secure the trailer hitch.
Tire pressu re
tow ing a trailer, inflate t h e tires of your ve ­
hicle to the col d tire press ure lis ted under on the sticker o n the open ed ge of the
dri ver's door. Inflate trailer tires to trai ler and tire manufactur ers' specificat ions.
lights
A lw ays check
the headlight settin gs wit h the tr ai le r hooked up before driving off. Adju st as n ecess ary so th a t yo u can see th e road ahead but not blind on coming
C he ck and make sur e th a t all veh icle and trailer lights are workin g properly -especially the brake light s.
16 Driving and protecting the environment

Safety chains
Be sure trailer safe ty cha ins are prop erly necte d fro m the trailer to th e hitch on th e hicle. Leave enoug h slack in th e c hain s to turn
corners. When you install safety ch a in s, mak e sure they will not dragon th e road whi le you are
driv ing.
Th e chains shou ld c ross
under th e trai le r to ng ue
to prevent it from dropping to the ground in case of separa tion from the hit ch .
Electronic Stabilization
Always leave th e mak es it easie r to stabilize the
t railer sho uld it start to swerve or sway.
Always adjust your speed and driving style to
road, traffic and weather conditions. Never le t the extra safety that and
A rig is eas ier to o pe rate and trol. Thi s means that th e tow vehicle should be loaded to the exte nt possibl e and permi ssibl e
w hil e keepin g th e t raile r as lig ht as possibl e under the ci rcumstances . Whenever possible, tran sfe r so me cargo to the luggage compartm ent
o f th e tow vehicle whil e observ ing tongue load requireme nts and ve hicl e loading ation s.
The hig her th e spee d, the more diffi cult it comes for the driver to control the rig. Do not drive at the maximum permissible
Always appl y brake s early . W hen dri ving
downhill , down shift into lower gear (selector leve r positi on
The cooli ng effect of th e fa n cannot
b e in cre ase d by dow nshif tin g because fan speed
i s independent of engine speed. Therefore,
Riding in a trailer is dangerous and may be
A person who is not properly restrained in
a moving vehicle risks serious personal injury and even death in a crash.
Never let anyone ride in your vehicle
without being properly restrained .
Never allow a passenger to rid e in a trailer.
Exceed ing the maximum permissible weight ratings and maximum permissibl e trailer
weights can result in accident s leading to rious personal injury.
Never le t the actual Gross Axle W eight Rating at the front and rear axles exceed the
permissible weights. Also never let their bination exceed the Gross Weight
Rating.
Always remember that the vehicle's
w he n dri vin g uphill, you can alwa ys drive in the
hi ghes t possibl e gear wit h low engin e speed. the coo lant tempe rature warni ng light in th e strument clu ster start s flas hin g in red, pull off
th e ro ad, s top and let th e engine idle for ab o ut 2 minutes to preve nt a heat buildup and eng in e
damage.
R educe your speed even more under vorab le load , weather or wind conditions ­
particularly when going downhill.
Be especial ly careful when passing other vehicles. Reduce vehicle speed immediately if the trail er shows the slightest sign of sway ing.
N ev e r try to stop the sway ing by ating.
Always heed speed limits.ln some a reas speed limits for vehicle s towing
Driving and protecting the environment 17