stop start AUDI S4 2013 Owners Manual

Instrument s and warnin g/indic ator ligh ts 15
ml
adaptive light *
¢page22
m
Light-/rain sensor*
¢page22
-
B
Adaptive dampers*
¢page 22
Ill
Sport differential *
¢page22
m
Ignition lock
¢page 23
Ill
Steering column lock
¢page 18
,1,ij
Electromechanical steering, dy-
namic steering*./
¢page 190
Transmission
g
-multitronic®, tiptronic
¢page97
- S tronic® ¢page 97
m
Transmission
-S t ron ic ® ¢page 97
Other indicator l ight s
11
1!11 Turn signals
llfa ¢page23
CRUISE
•
I
•
USA models: Cruise control
¢page89
Canada models : Cruise control
¢page89
Adaptive cruise control *
¢page 102
Adaptive cru ise control*
¢page 102
-High beam
¢page48
BRAKE /((J)) Brake system
The ligh t illum ina tes when the ignition is
switched on.
It goes out a fter the eng ine has been started. This
indicates that the b rake
warning light is functioning properly.
If th e brake warning light doe s not light up
when the engine is cranking, th ere may be a
malfunction in the electrical sy stem . In thi s
case, contact your Audi dealer .
If the brake system wa rn ing/ indica tor light
tu rns o n, there is a b ra ke sys tem ma lfunction .
1111 (USA model s)/. (Canada model s)
Stop v ehicl e and check brake fluid lev el
If the indicator l ight turns on and the mes­
sage appears , proceed as follows:
.,. Pull off the road.
.,. Stop the vehicle.
.,. Tu rn off the engine.
.,. Check the b rake fluid level¢
page 228 .
.,. Contact your nearest autho rized repair fa-
cility if necessa ry.
Warning! Fault in brake system . Contact
d ealer
If the ABS indicator light fl!S (USA models)/
(11 (Canada mode ls), the ESC ind icator light
Ji1 and the brake system indicator light
1111 ( U SA mode ls)/ . (Canada mode ls) turn
o n and the message appears, the ABS, ESC
and braking d is tribut ion are not worki ng ¢ ,&. .
Carefully drive to your author ized Audi dealer
immediately to have the malfunct ion correct­
ed ¢,&. .
1111 (USA models )/. (Canada models)
Parking brake system fault! S ee owner' s
manual
- If the ind icator light and the message ap­
pear
when stationary or after switch ing the
ignition on ,
check if you can release the
park ing brake . Afte r releasing the parking
brake, carefully d rive to your au thor ized
Audi dea le r i mmediately to have the ma l­
function corre cted. If yo u can not release the
parking brake, see k professiona l assistance .
-If the ind icator light and the message ap-
pea r
while driving , th e emergency b ra ki ng
function may not be avail able.
It may not be .,..

16 Instrum ent s and w arn ing /indic ato r light s
possible to set the parking brake or release
it once it has been set. Seek professional as ­
s istance .
(USA models): If the warning light
1111 and
the warning light
liJ appear together, imme­
diate ly contact your authorized Audi dealer or
qua lified workshop to have all brake pads in­
spected
¢ page 20.
When the light comes on, an audib le warning
signal is also given .
A WARNING
-Always observe the warnings in
¢ page 213, Engine compartment, be­
fore opening the hood and checking the brake flu id .
- Driv ing with low brake fluid is a safety
hazard. Stop the car and get professional
assistance.
- USA models: If the 1111 warn ing light,
the
G1 warning light and the m;B warn­
ing light come on together, the rear
wheels co uld lock up first unde r hard
braking. Rear wheel lock-up can cause
loss of vehicle con tro l an d an accident .
Have your vehicle repai red immedia tely
by your aut ho rized Audi dea le r or a quali ­
fied workshop. Drive slowly and avoid sudden, hard brake applications.
- Canada models: If the brake warn ing
light ., the
DJ warning light and the
ABS warning light
BJ come on together,
the rear wheels could lock up first unde r
hard braking. Rear wheel lock-up can
cause loss of vehicle control and an acc i­
dent . Have yo ur vehicle repaired immed i­
ately by your authori zed A udi dealer or a
qu alifie d wo rkshop. Dr ive slowly and
avo id su dden, hard brake appli cat ions.
- If the brake warning/indicator light does
no t go out afte r a few se con ds and the
par king brake is released, or lights up
whi le you are driving, the fluid level in
the brake f luid reservoir is too low. If you
believe that it is safe to do so, proceed
immediately at low speed to the nearest
authorized Audi dealer or qualified repair facility and have the brake system in­
spected.
- Always keep in mind that after severa l
brake applications, you will need greater
pressure on the brake pedal to stop your
veh icle. Do not rely on strained brakes to
respond with max imum stopping power
in critical s ituations . You must allow for
increased braking distances. The extra
d istance used up by fading bra kes could
le ad to an ac cident.
:l~/(®) Electromechanical parking brake
The warning/indicator light monitors the
electromechanical parking brake .
If the indicator light . (USA models)/ .
(Canada models) turns on, the pa rking brake
was set. If the parking brake is set when the
ignition is off, the ind icator light turns off af­
ter abo ut 20 seconds.
The wa rning/i ndicator lig ht will go out when
the pa rking brake is re leased .
• (USA models ) /. (Can ada model s) Cau­
tion: Vehicle parked too ste ep
If the indicator light b links and the message
appears, there is not enough braking power to
keep the vehicle from roll ing . The brakes have
overheated . The veh icle cou ld roll away eve n
o n a sma ll incline .
Press brake pedal to release parking bra ke
To re lease the parking brake, press the brake
pedal and press t he button(® or start driving
with starting assist at the same time
¢ page 86.
Please relea se park ing brake
T o re lease the par king b rake manually , p ress
t h e b rake peda l and press the button{®) at
the same time. The pa rking brake on ly releas­
es automatically if the driver's safety be lt is
fastened.
Ill Parking brake!
If the 11,1 indicator light turns on and t his
message appears, the re is a parki ng b rake

Instruments and warning/indicator lights 17
malfunction. Drive to your autho rized Audi
dealer or qualified workshop immediately to
have the malfunction corrected.
~ Safety belts
This warning/indicator light reminds you to
put on your safety belt.
The . warning/ind icator light ill uminates
when the ignition is switched on to remind
the driver and any front passenger to put on
the safety belt. Additionally, an acoustic warn­
ing (gong) will also sound.
For more Information
¢ page 137, Safety
belt warning light.
0 Battery
The . warning/indicator light illuminates
when you switch on the ignition and must go
out after the engine has started.
• Alternator fault: Battery is not being
charged
If the indicator light turns on and the mes ­
sage appears, there is a malfunction in the
generator or vehicle e lectrica l system .
Drive to your autho rized Aud i dealer or quali­
fied workshop immediately . Because the vehi­
cle battery is discharging, turn
off all unnec­
essary electrical equipment such as the radio .
Seek professional assistance if the battery
charge level is too low.
(•) Low battery: Battery will be charged
while driving
If the indicator light turns on and the mes­
sage appears, there may be limited starting
ability .
If thi s message turns off after a litt le w hile,
the battery charged eno ugh wh ile driving.
If the message does not turn
off, have your
author ized Audi dealer or qualified workshop
correct the malfunction.
"l::;r: Engine oil pressure
The red engine oil pressure warning symbol
requires immediate service or repair . Driving
with a low-oil-pressure indication is likely to
inflict severe damage to the engine.
• Turn off engine! Oil pressure too low
If the indicator light turns on and the mes­
sage appears, the oil pressure is too low.
.,. Pull
off the road .
.,. Stop the vehicle.
.,. Turn
off the engine.
.,. Check the engine oil level ¢ page 224.
.,. If the eng ine oil level is too low, add eng ine
oil ¢
page 224 . Make sure that the oil pres ­
sure warning symbol. appears no longer
in the display before you start dr iv in g again .
.,. If the engine oil level is correct and the ind i­
cator light still turns on, turn the engine
off
and do not continue driving. Seek professio­
na l assistance .
(D Tips
- The engine oil pressure symbol. is
not an indicator for a low engine oil lev­
el. Do not rely on it. Instead, check the
oil level in your engine at regular inter­
vals, preferably each time you refuel,
and always before going on a long trip.
- The yellow oil level warning indication
l!I requires oil refill or workshop serv­
ice without delay. Do not wait until the
red oil pressure warning. starts to
flash before you respond to the low oil
level warning
1!1-By then, your engine
may already have suffered serious dam­
age.
~ .. Engine oil level
• WARNING: Please add oil immediately
If the indicator light and the message appear,
add engine oil immediately
¢ page 224.

18 Instrum ent s and w arn ing /indic ato r light s
...L Engine cooling system
A malfunction in the engine cooling system
must be repaired as soon as possible .
• Turn off engine and chec k coolant le vel
If the indicator light t urns on and the mes ­
sage appears, the coo lant temperature is too
high or the coo lant level is too low.
> Pu ll off the road.
> Stop the vehicle .
> Turn off the engine.
> Check coolant level c:> page 226.
> Add coolant if necessary c:> page 22 7 .
> Continue driving only after the eng ine cool­
ant warn ing/ indicator light goes out .
> Contact your authorized Audi dealer for as-
s istance if necessary .
If the engine coolant level is correct, then the radiator fan may be the cause of the malfunc­
tion .
• Coolan t tempe rature! Let engine run w ith
v eh icl e s tationary
If the indicator light turns on and the mes ­
sage appears in trailer mode*, let the engine
run at idle for a few m inutes to cool down.
A WARNING
- If your veh icle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the engine and turn on the hazard
wa rning lights ¢
page 49, Emergency
flashers.
-
- Never open the hood if you see or hea r
steam or coolant escap ing from the en­
gine compartment - you risk being scald ­
ed. Wait until you can no longer see or
hear steam or coo lant escaping .
- The engine compartment of any vehicle
is a dangerous area. Before you perform
any work in the engine compartment,
turn of the eng ine and allow it to cool.
Follow the warning stickers¢
page 213,
Engine compartment .
(D Note
Do not continue driving if the . symbol
ill um inates . There is a malfunction in the
engine cooling system -you could damage
your engine.
@ -Steering column lock
• Stee ring d efec tive ! Do not dri ve vehicle!
If the indicator light turns on and the mes­
sage appears, there is an electronic steering
column lock malfunct ion. You cannot switch
the ignit ion on .
Do
not tow yo ur vehicle because it cannot be
steered . Seek professional assista nee.
l!J:I Steering lock : Cont act de ale r!
If the indicator light turns on and the mes­
sage appears, there is an e lectronic stee ring
co lumn lock malfunct ion .
Drive to your authori zed A udi dealer immedi­
ately to have the ma lfunction corrected .
A WARNING
-
Your vehicle must not be towed in the
event of a malfunction in the elect ronic
steering co lumn lock beca use it cannot be
steered due to the loc ked steering . If it is
towed with the steering locked, there is
the r isk of an accident.
© -Ignition lock
• Ignit ion lo ck defecti ve . Contact dealer!
If the indicator light turns on and the mes­
sage appears, do
n ot switch the ignit ion off
because you may not be ab le to sw itch it on
again.
Drive to your authorized A udi dealer immedi ­
ately to have the malfunction corrected .
On vehicles with convenience key*, the engine
shou ld not be switched
off using the
I S TAR T ENGINE ST OPI button beca use the en­
gine cannot be started again after the ignition
has been switched
off. ..,.

30 Driver information display
Resetting the service interval display
Your authorized Audi dealer will reset the cor­
responding service schedule after performing
the appropriate service on yo ur vehicle . Yo u
also have the possibility to reset the oil
change schedule after having performed an
oil change according to Audi specifications.
Select
I CAR I function button > Service interval
display > Reset oil change interval
or ICARI
function button> Car systems* control but­
ton
> Servicing & checks > Reset oil change
interval.
(D Note
If you disconnect the battery terminals, no
calculations can be made for the serv ice
interval display during this time and no
service rem inder wi ll appear. Remember
that observing the proper service intervals
is vitally important to extend ing the life of
your vehicle, particu larly the eng ine, and
maintaining its value. Even if the mileage
driven is low, the maximum period of one
yea r from one service to the next must not
be exceeded .
@ Tips
-Do not reset the display between oil
changes, otherwise the display will be in­
correct.
- The information in the Service Reminder
r ema ins stored even when the vehicle
battery is disconnected.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) (4 i n
the instrument cluster is part of the On-Board
Diagnostic (OBD II) system.
The warning/indicator light illuminates when
the ignition is switched on and goes out after
the engine starts and the idle has stabilized .
This indicates that the MIL is working proper­
ly.
If the light does not go out after the engine
is started, or illuminates while you are driv­
ing, a malfunction may exist in the eng ine sys­
tem . If the light illuminates, the catalytic con­
verter could be damaged .
Continue driving
with reduced power (avoid­
ing sustained high speeds and/or rapid accel­
erations) and have the cond ition corrected.
Contact your authorized Audi dealer.
If the light illuminates, the electronic speed
limiter may also be malfunct ioning. For more
information
c:> page 31 , Electronic speed
limiter.
An improperly closed fuel filler cap may also
cause the
MIL light to illuminate
c:>page 217.
On-Board Diagnostics
Fig. 18 Locat io n of Data Link Con nector (D LC)
On-Board Diagnostics monitors the compo­
nents of your emission control system . Each
monitored component in your engine system
has been assigned a code. In case of a mal­
function, the component will be identified
and the fault stored as a code in the control
module memory.
The MIL light may also illuminate if there is a leak in the on-board fuel vapor recovery sys­
tem. If the light illuminates after a refueling,
stop the vehicle and make sure the fuel filler
cap is properly closed
c:> page 217.
In order to make an accurate diagnosis, the
stored data can on ly be displayed using spe­
c ial diagnostic equipment (generic scan tool
furOBD) .
~

34 Openin g and clo sing
keys. Unguarded access to the keys pro­
vides children the opportunity to start the engine and/or act ivate vehicle sys­
tems such as the power w indows etc . Un­
supervised operation of any veh icle sys­
tem by ch ildren can res ult in serious in­
Jury.
- Do not remove the key from the ignition
lock until the vehicle has come to a com­
plete stop. Otherwise the steering col ­
um n loc k co uld suddenly e ngage -caus­
ing the risk of an accident.
@ Tips
- The operation of the remote contro l key
c a n be tempo rarily disrupted by in terfer­
ence from tran smi tters in t he v ici nity of
the veh icle work ing in the same frequen­
cy ra nge (e.g . a ce ll phone, radio equip­
ment).
- Fo r security reasons, replacement keys
are on ly available from Aud i dea le rs .
- Fo r De clarat ion o f Compliance to United
States FCC and Industry Canada regu la ­
tions
¢ page 283.
Removing the mechanical key
Fig . 20 Remot e ma ste r key: re mov ing the mec hanic al
key
.. Press the release button @¢ fig. 20.
.. Pu ll the mecha nical key @ out of the mas­
te r key .
Using the mechan ica l key, you can :
- l ock and unlock* the glove compartmen t on
the passenger's s ide
¢ page 65 .
-lock and unlock t he lockable* rear bench
seat and pass-through* ¢
page 69. -
activate the child sa fety locks on the rear
doors ¢
page 42.
-lock and unlock the vehicle manua lly
~ page 38 if this should not be possible
w ith the master key.
- use t he ignition key emergency release
~ page 35.
Check light and battery in the master
key
Fig. 21 Rem ote mas ter key: re m ov ing th e ba ttery h old ­
e r
Check light in the ma ster key
The check light @¢ fig. 21 in the mas ter key
provides information about different condi­
t ions .
.. The check light turns on br iefly once when a
button is pressed, and during an "inquiry"
by the convenience key system .
.,. If the check light does not come on, the
battery is dead and has to be replaced . In
add it io n, w hen t he battery is dead
the m
indicator light appea rs in the instrument
cl uster display as we ll as the message
Please change key battery .
Master key battery replacement
.,. Remove the m echan ical key ~ page 34.
.,. Press t he release button @~
fig. 21 on the
b attery ho lde r and at the same time pull the
battery holder o ut o f the master key in the
direction of the arrow .
.. Insta ll the new battery CR 2032 with the
"+ " sign facing down.
.,. Push the battery holder carefully into the
master key .
.,. Insta ll the mechanical key .

38 Opening and closing
Emergency locking
Fig. 25 Drive r's door : lock cyl inde r
Fig . 26 Front passe nge r's door/rea r doo rs *: emergency
l ock
If the centra l locking system ma lfunctions ,
you must unlock/lock the doors separately us­
ing the emergency key or the mechanic al key.
Unlocking/locking the driver's door with
the mechanical key
,. Remove the mechanical key¢ page 34.
,. To unlock the dr iver's door, turn the key to
the open position@¢
fig. 25.
,. To lock the driver's door, move the se lector
lever to the P position (automatic transmis­
sion) and turn the key
once to the close posi­
tion
® c> A in General description on
page 32.
Locking the front passenger's door/rear
doors* with the mechanical key
The emergency lock is located on the rear side
of the front passenger's door and the rear
doors . It is only visible when the door is open.
,. Remove the mechanical key¢
page 34.
,. Pull the cover cap out of the opening
<=>fig . 26.
,. Insert the key in the inside slot and turn it
all the way to the right (right door) or left
(left door).
Once the front passenger's door/rea r doors *
have been closed, you cannot open them
again from the outside . The door can be
opened from the inside by pulling the door handle. If the child safety lock in a rear door*
is activated, you must first pull the door han­
dle on the inside . Then you can open the door
from the outside .
.8, WARNING
Read and follow all WARNINGS c> .&. in
General description on page 32.
(D Tips
-
After the ignition is switched on, the pow­
er locking system switch and the unlocking button for the rear lid
cs in the door are
enabled.
Electronic immobilizer
The immobilizer prevents your vehicle from
being started by unauthorized persons .
Inside the key there is a computer chip . This
chip automat ically act ivates/deactivates the
electron ic immobilizer.
Applies to vehicles with ignition lock:
The electronic immobilizer deactivates auto­
matically when you insert the remote control
key into the ign ition lock . It activates again
automatically when you
remove the remote
control key from the ignition lock.
Applies to vehicles with convenience key:
If the remote control key is located inside the
vehicle and you press the
I S TART ENGI NE STOP I button, the electron ic
immobilizer deactivates automat ically .
If you
switch the ignition off and remove the remote
control key from the vehicle, the electronic
immobilizer activates again automatica lly. ..,.

40 Opening and closing
Power opening/closing rear lid
Applies to vehicles: wit h au tom atic rear lid op erat ion
The open position can be adjusted.
Fig . 29 Drive r's door: Unlock ing the rear lid
-
Fig. 30 Locking switch in the rear lid
Opening rear lid
~ Press the button C$ on the remote key for
at least one second . Or
~ Pull the unlock button C$ in the driver's
door
r::::> fig. 29. Or
~ Press the handle on the rear lid r:::;, page 39,
fig. 27.
Closing rear lid
~ Press the close button in the open rear lid
r::::> fig. 30. The rear lid moves to the closed
position by itself and soft close locks it auto­
matically
r:::;, ,&. .
Saving the opening angle of the rear lid
~ Bring the rear lid manually or automatically
to the desired opening position and leave it
in this position.
~ Press the button in the rear lid r:::;, fig. 30 for
at least fou r seconds in order to save the de­
sired opening position. The position can only
be saved start ing at a certain level. T
he sett ings in the radio or MMI* determine if
the rear lid can be opened using the handle
r::::>page 37.
Opening will be stopped immediately when:
- You press the
C$ button on the remote con-
trol master key for at least one second, or
- You press the
C$ button in the rear lid, or
- You push the handle in the rear lid, or
- You pull the
C$ button in the driver's door,
or
- When something blocks the rear lid or
makes it difficult for the lid to move.
If you press one of the buttons
C$ now, the
rear lid will either open or close, depending on
its angle.
If you pull lightly on its handle, the rear lid
will close.
Closing will be stopped immediately when :
- You press the
C$ button in the rear lid, or
- You push the handle in the rear lid, or
- You release the
C$ button on the driver's
door, or
- When something blocks the rear lid or
makes it difficult for the lid to move.
If you press one of the buttons
C$ now, the
rear lid wi ll either close or open, depending on
its ang le.
If you pull lightly on its h andle, the rear lid
will close.
You can manua lly stop the automatic open­
ing/closing of the luggage compartment lid.
T he automatic closing process begins if you
push down on the rear lid.
A WARNING ,..___
-Never close the rear lid inattentive ly or
without check ing first. Although the
closing force of the rear lid is limited,
you can still seriously injure yourself or others.
- Always ensure that no one is within
range of the rear lid when it is moving, in
~

(upholder
Fig. 69 Ce nter console: front cupholder
Fig. 70 Rear armrest: rea r cupho lder
Opening rear cupholders
~ To open the cupholder, press on the symbol
ii@ ~ fig. 70 .
~ To adjust the arm @, swing it in the direc­
tion of the arrow.
~ Place the beverage in the holder and release
the arm. The arm swings back by itself and
automatically secures the beverage .
Closing cupholders
~ To close the cupholder, press on the center
section between the two arms and push the
cupholder in the slot as far as it will go.
A WARNING
Spilled hot liquid can cause an accident
and personal injury.
- Never carry any beverage containers with
hot liquids, such as hot coffee or hot tea,
in the vehicle while it is moving . In case
of an accident, sudden braking or other
vehicle movement, hot liquid could spill,
caus ing scald ing burns . Spilled hot liquid
can also ca use an accident and personal
injury.
Seats and storage 65
-Use on ly soft cups in the cupholder. Hard
cups and glasses can cause injury in an
accident.
- Never use the cupho lder or adapter as an
ashtray -risk of fire.
(D Note
Only drink containers with lids should be
carried in the c upholder. Liquid could spill
out and damage your vehicle's electronic
equipment or stain the upholstery, etc.
Glove compartment
The glove compartment is illuminated and
can be locked.
Fig . 71 G love compar tment
~ To open the glove compartment, pull the
handle in the direction of the arrow~
fig. 71
and swing the cover down to open.
~ To close the glove compartment, push the
glove compartment lid upward until the lock
engages .
T he glove compartment can be locked using
the mechanical key~
page 34.
On the right side in the glove compartment is
a holder with the key body into which the
eme rgency key must be clipped to be able to
start the veh icle.
&_ WARNING
To reduce the risk of personal injury in an
accident or sudden stop, always keep the
glove compartment closed while driving.
-

~ Automatic transmission: Step on the brake
peda l and move the se lector lever to the P
or N position .
~ Press the key c:> fig. 94 -the eng ine will
start.
Sw itching the i gnition on /off
If you wou ld like to switch the ignition on
without sta rting the engine, follow t hese
steps :
~ Insert the key i nto the igni tion lock .
~ Press the key b riefly w ithout press ing the
clutch peda l (for manual transmissions) or
the brake peda l (for automatic transmis­
s ions) .
~ To sw itch the ignition off, press the key
again .
When starting the engine, ma jor e lectr ica l
loads are switched off temporarily .
You can only remove the key with the ignition
switched off.
I f the engine sho uld not star t immediately,
the starting process is automatically stopped
after a short time. Repeat starting procedure .
A WARNING
-Never allow the engine to run in confined
spaces -danger of asphyxiation.
- Never remove the ign ition key from the
ignition look while the vehicle is moving.
Otherw ise, the steering lock could sud­
denly engage and you would not be able
to steer the vehicle.
- Always take the key with you whenever
you leave your vehicle . Otherwise, the
engine could be star ted or e lectr ica l
equipment such as the power w indows
cou ld be operated. This ca n lead to seri­
o us inj ury.
- Never leave c hildren or persons requ iring
assistan ce unattended in the vehicle. The
doors c an be lo cked using the remote
t ransmit ter, preventing people from es­
caping from the vehicle on their own in
the event of an emergency. Depend ing
on the time of year, people inside the ve-
On th e ro ad 81
hicle can be exposed to very high or very
low temperatu res.
(D Note
Avoid high eng ine rpm, fu ll th rottle and
heavy engine loads unti l the engine has
reached operating tempe rat ure -other­
wise you r isk eng ine damage.
@ For the sake of the environment
Do not let the engine run w hile parked to
warm up. Begin dr iv ing immediately. T his
reduces unnecessary emissions.
@ Tips
- If the key cannot be removed from the
ignition lock, you have to pull the me­
chanical key out of the maste r key in or­
der to be able to lock the vehi-
cle c:>
page 35.
-After starting a cold engine, t here may
be a brief peri od of increased no ise be­
cause the oil press ure must first bu ild up
in the hydraulic valve ad justers. This is
normal and not a cause for concern.
- If you leave the veh icle with the ignition
switched on, the ign it ion w ill switch off
afte r a certa in per iod of t ime . Please
note that ele ctrical equ ipment such as
exterior ligh ts w ill sw itch off as well
when that happens .