battery AUDI A6 2018 User Guide

Driving
Starting the engine when there is a
malfunction
It may not be possible to start the engine under
certain circumstan ces, for example if the battery
in the vehicle key is drained, if interference is af­
fected the key or if there is a system malfunc ­
tion .
Fig . 78 Cen te r co nsole /rem ote co ntro l key : sta rt ing t he
en gine if th ere is a m alfu nction
Req uiremen t: the messa ge Key i s no t recog­
nized . Hold back of key against marked a rea.
See owner's manual
must app ear and the DJ in ­
dicator light must tu rn on .
,.. Hold the remo te contro l key in the loc ation in­
dicated as shown in the illustration
y >l) c::> fig . 78.
,.. Press the b rake pedal.
,.. Press the I S TAR T ENGINE STOPI button . The
engine will start.
,.. Drive to an authorized Audi dealer or author­
ized Audi Service Facility immed iately to have
the malfunc tion cor rected .
(D Tips
You can view the message again by pressing
the
I START ENGINE STOP ! button.
Start/Stop system
Description
Applies to: veh icles with Sta rt/Stop system
The Start/Stop system can help increase fuel
economy and reduce
CO 2 em issions.
I n Start/Stop mode, the engine shuts off a uto­
mat ica lly w hen the veh icle is stopped, such as at
ll Ma rket -spe cifi c
70
a traffic light . The ignition remains sw itched on
during this stop phase . The engine wi ll restart
automat ica lly w hen needed .
Applies to: A 6: the Sta rt/Stop system activates
automat ica lly once the ig nition is switched on .
Applies to: 56: the last S tart/Stop system setting
i s re stored whe n the ignition is switc hed on.
Basic requirements for Start/Stop mode
- The driver's doo r must be closed .
- The driver 's seat be lt much be fastened.
- The hood must be closed.
- T he vehicle m ust have driven faster than
2.5 mph (4 km/h) since the last t ime it stop­
ped.
- A t railer m ust not be hitched to the vehicle.
(D Note
A lways swi tch the Start/Sto p system o ff whe n
drivi ng thro ugh wa ter
<::> page 70.
(D Tips
The engi ne s tops s hortly before the ve hicle
comes to a sto p
ll.
Stopping/starting the engine
Applies to: vehicles with Start/Stop sys tem
F ig. 79 In str umen t cl uste r: en gin e sw it ch ed off (stop
p hase )
,.. Brake the vehicl e to a stop. The engine stops
shortly before the vehicle comes to a stop or if
the vehicle is stationary
1> . Keep your foot on
the brake pedal. The
D] i ndicator light appears
in the informat ion line at the bottom of the
.,..

a co .... N
" N .... 0 0 \.J ' instrument cluster display. The needle in the
tachometer also moves into the
READ Y posi­
t ion
ll .
~ The eng ine starts aga in when you take your
foot off the brake pedal. The ind icator light
turns off.
Additional inf ormation
The engine stops in the P, N and D se lector lever
positions.
I f you select the R pos ition dur ing a stop phase,
the engine will start again .
Shift to P q uickl y to p revent t he engine from
starti ng u ninten tiona lly w hen s hift ing t hrough R .
You can determ ine for yourself if the eng ine will
stop or not by reducing or increas ing the amount
of force you use to press the bra ke pedal. For ex­
ample, if you only lig htly press on t he b rake ped­
a l in stop-and -go traff ic or w hen tu rning, the en ­
gine will not switch
off when the vehicle is sta ­
tionary . As soon as yo u press the brake down
harder, the eng ine will switch off.
(D Tips
-Press the b rake pedal during a Stop p hase
to keep the ve hicle from rolling.
-The ignition wi ll tu rn off if you press the
I START E NGINE STOP ! button during a stop
phase . The need le in the tachomete r moves
i nto the
OFF position.
General information
App lies to: ve hicles with Start/Stop system
The standard Start/Stop mode can be canceled
for various system-related reasons.
Engine does not switch off
B efore and d urin g e ach stop phase , the system
checks if certa in con ditions have been me t. If the
@j indicator light appears in the instrument cl us­
ter disp lay, the engine will not be stopped, for
examp le in the fo llow ing s ituations:
ll Ma rket -specific
Driving
-The engine has not reached the minim um re ­
quired temperature for Sta rt/Stop mode.
-The interior temperature selec ted by the cli -
mate control system has not been reached .
-The outside tempe ra ture is ex tremely high/low.
-The winds hield is bei ng defros ted® .
-The parking system * is sw itched on .
-The vehicle battery charge level is too low .
-The steering wheel is tu rned at a sharp angle o r
is moving.
-After engaging the reverse gear.
-On sharp inclines .
Engine automatically restarts
The standard Start/S top mode w ill be can celed
dur ing a stop phase in the followi ng si tuatio ns.
T he eng ine restarts wi thout any action by the
driver .
-The vehi cle ro lls, fo r example whi le on a slope .
-The inte rior tempe rature d iffers from t he tem-
pe ra ture selected in the A/C system.
-The winds hield is bei ng defrosted® .
-The brake peda l is pressed severa l times in a
row .
-The vehicle battery charge level is too low.
-Power consumption is high.
T he eng ine can turn off aga in when the cond i­
tions for Start/Stop mode are met.
Ignition is switched off automatically
T o p reve nt the vehicle battery from dra ining, the
i gni tion will switc h off
automaticall y under the
f o llow ing co nditions:
-The vehicle has already been dr iven .
-The Start/Stop system has stopped the engine .
-The driver's door is opened .
-The driver's safety belt is unbuckled.
-The brake peda l is not pressed .
-The vehicle is stat ion ary.
In this case, the activated low beam is replaced
by the pa rk ing light. The par kin g lights wi ll
swi tch off afte r approx imately 30 m inutes o r
whe n you lock t he ve hicle.
71

Driving
Selector lever emergency release
If the vehicle's power supply fails, the selector lever can be released in an emergency.
Fig. 86 Front center console: emergency release for these­
l ector lever
"' To reach the emergency release mechanism, re­
move the ashtray insert*.
"' Loosen and remove the small cap in the ashtray
mount
c:> fig. 86 .
.. You now have access to a pin. Using a screw­
driver or similar object, press the pin down and
hold it in that position .
.. Press the release button in the selector lever
and move it into the N position.
Only move the selector lever out of the P position
when the ignition is switched on. If the vehicle
must be pushed or towed due to a power failure
(for example, the vehicle battery is drained), the
selector lever must first be moved to the
N posi­
tion using the emergency release mechanism .
A WARNING
-Only activate the emergency release while
on a level surface or a slight slope.
-Only move the selector lever out of the P po­
sition when the parking brake is set. If it is
not functioning, secure the vehicle from
rolling using the brake pedal or other suita­
ble means, such as blocking a front and a
rear wheel. An unsecured vehicle may roll
away, which increases the risk of an acci­
dent.
80
-

a co ,...,
N
" N ,...,
0 0 \,;J ' (D Tips
-Side assist is not active w hile you are mak­
i ng the ad justment.
- Your settings are automatically stored and
ass igned to the remote control key being
used.
Messages
App lies to: ve hicles with Audi side assist
If side assist switches off by i tself, the LED in the
button turns off and a message will appear in the
i nstr ument cluster d isplay:
Audi side a ssist: Currently una vailable . N o
senso r vision
The radar sensor v is ion is impaired . Do not cover
the area in front of the sensors with bike wheels, stickers, dirt or other objects . Clean the area in
front of the senso rs , if
necessa ry ~ page 99 ,
fig . 106.
Audi side as sist: Currently un avail able
Side assist cannot be switched on at th is time be ­
cause there is a malfunction (for example , the
battery charge level may be too low) .
Audi side as sist : System fault!
The sys tem cannot guarantee that it will detect
veh icles correctly and it has switched off. The
sensors have been moved or are faulty . H ave the
system checked by an authorized Audi dealer or
author ized Audi Se rvice Facility soon .
Audi side assist: Unav ailable when towing
Side assist sw itches off automatically when a fac­
tory-ins talled trailer hi tch is connected to the
e lectrical connector on the trailer . There is no
gua rantee the system will sw itch off when using
a retrofi tte d trai ler hitch. Do not use s ide ass ist
when towing a t railer.
A ssi st a nce systems
Night vision assist with
pedestrian and wild
animal detection
Description
Applies to : vehicles wit h night vision assist
The night vision assist con detect, highlight and,
if n ecessary, warn about p ed estrians and large
wild animals.
Night vision assist wit h pedest rian and wi ld ani ­
mal detection assists you at night by using an in­
frared camera to monitor the a rea in front of
your vehicle, within the limits of the system. It can d isplay objects up to a distance of approxi­
mately 1000 feet (300 m). The thermal image
detected by the camera is shown in the inst ru­
ment cluster d isp lay. Wa rm areas appear lighter
and co ld areas appear da rker.
Highlighting detected pedestrians and wild
animals
Appl ies to: vehicles with night vision assist
Fig. 1 08 In strum ent cluster: ye llow highlig h ted pedes ­
tria ns
Fi g. 10 9 Ins trumen t cl uster : sy mb ol when t he in frar ed im ­
age is not v is ib le
Wi thin the limi ts of the sys tem, the night v is io n
ass ist can detec t pedestr ians and wild animals
.,_
101

a co .... N
" N .... 0 0 \,;J ' All wheel drive (quattro)
Applies to: vehicles wit h all wheel drive
In oil wheel drive, oil four wheels ore powered .
General information
In all wheel drive, the driving power is divided be­
tween all four wheels. This happens automatical­
l y depending on your driving behavior as well as
the current road conditions. Also see
c:> page 119, Electronic stabilization control
(ESC) .
A center differential distributes the driving power
variab ly to the front and rear axle. It works to­
gether with selective wheel torque control, which
activates when driving through curves
c:>poge 119. With the sport differential*, power
distribution to the rear wheels is variable and can
be adjusted w ith drive select
c:> poge 104 .
The all wheel drive concept is designed for high
engine power. Your vehicle is exceptionally pow­
erful and has excellent driving characteristics
both under normal driv ing cond itions and on
snow and ice. Always read and fo llow safety pre­
cautions
c:> .&, .
Winter tires
By using all wheel drive, your vehicle has good
forward mot ion with standard tires in winter con­
ditions . However, in winter we recommend using
winter or all season tires on all four w heels, be­
cause this will improve the braking effect.
Snow chains
If there are snow chain laws, snow chains must
also be used on vehicles with all wheel drive
c:> page 217, Snow chains.
Replacing tires
For vehicles with all wheel drive, only wheels with
the same rolling circumference should be used .
Avoid using tires with different tread depths
c:> page 208, New tires or wheels .
Offroad vehicle?
Your Audi is not an offroad vehicle -there is not
enough ground clearance. For this reason, avoid
difficult terrain.
Intelligent Technology
A WARNING
--
- Also, in veh icles with all wheel drive, adapt
your driving style to the current road and
traffic conditions . Do not let the increased
safety provided tempt you into taking risks,
because this increases the risk of an acci­
dent.
- The braking ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not different from a two wheel drive vehi­
cle. Do not be tempted to accelerate to a
high speed when the road is slippery, be­
cause t his increases the risk of an accident .
- Note that on wet streets, the front wheels
can "hydrop lane" if driving at speeds that
are too high. Unlik e front wheel drive
veh icles, the engine does not rev higher sud­
denly when the vehicle begins hydroplaning.
For this reason, adapt your speed to the
road conditions to reduce the risk of an acci­
dent.
Energy management
Your vehicle is equipped with an intelligent ener­
gy management system for distributing electrici­
ty . This significantly improves the start ing ability
and increases the vehicle battery life.
(D Tips
- If you dr ive short distances frequently, the
veh icle battery may not charge enough
w hile driving. As a result, convenience func­
tions for electr ical equipment may be tem­
porarily unavailable.
- Th e vehicle battery w ill gradually drain if
the vehicle is not driven for long periods of
time, or if electrical equipment is used
when the engine is not running. To ensure
that the vehicle can still be started, the
electrical equipment will be reduced or
switched off.
123

Airbag system
must be performed by qualified workshops
only. Make sure that any airbag service ac­
tion is entered in your Audi Warranty
&
Maintenance booklet under AIRBAG RE·
PLACEMENT RECORD .
-For safety reasons in severe accidents, the
alternator and starter are separated from
the vehicle battery with a pyrotechn ic circuit
interrupter.
- Work on the pyrotechnic circuit interrupt­
er must only be performed by a qualified
technicians who have the experience, in­
formation and special tools necessary to
perform the work safely.
- If the vehicle or the circuit interrupter is
scrapped, all applicable safety precautions
must be followed .
@ For the sake of the environment
Undeployed airbag modules and pretension­
ers might be classified as Perchlorate Materi­
al
-special handling may apply , see
www .dtsc.ca.gov/hazardouswaste/perchlo ­
rate . When the vehicle or parts of the re­
straint system including airbag modules and
safety belts w ith pretensioners are scrapped,
all applicable laws and regulations must be
observed . Your authorized Audi dealer is fa­
miliar with these requirements and we recom­
mend that you have your dealer perform this
service for you.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced Airbag System
performs in a crash. For example, using tire-rim
comb inations not approved by Audi, lower ing the
vehicle, chang ing the stiffness of the suspension,
including the springs, suspension struts , shock
absorb ers etc . can change the forces that are
measured by the airbag sensors and sent to the
electronic control unit . Some suspension changes
can, for example, increase the force levels meas­
ured by the sensors and make the airbag system
deploy in crashes in which it would not deploy if
the changes had not been made. Other kinds of
158
changes may reduce the force levels measured by
the sensors and prevent the airbag from deploy­
i ng when it should .
& WARNING
Changing the vehicle's suspension including
use of unapproved tire-rim combinations can
change Advanced Airbag performance and in­
crease the risk of serious personal injury in a
crash .
- Never install suspension components that do not have the same performance charac­
teristics as the components origina lly instal­
led on your vehicle.
- Never use tire-rim combinations that have
not been approved by Aud i.
Knee airbags
Description of knee airbags
Applies to: vehicles with knee airbags
The knee airbag system can provide supplemen­
tal protection to properly restrained front seat
occupants.
Fig . 155 Driver 's knee airbag
The driver knee airbag is in the instrument panel
underneath the steering wheel ¢
fig. 155, the
airbag for the passenger is at about the same height in the instrument panel underneath the
glove compartment.
The knee airbag offers add itional protect ion to
the driver's and passenger's knees and upper and lower thigh areas and supplements the protec­
tion prov ided by the safety belts .
If the front airbags deploy, the knee airbags also
deploy in frontal coll is ions when the deployment
..,.

Checking and Filling
belt, alternator and radiator fan) and from
the high-voltage ignition system.
- Do not under any circumstances give gas in­
advertently (for example, by hand from the
engine compartment) if the vehicle is sta­
tionary but the engine is running and a gear
is engaged. Otherwise, the vehicle will start
to move immediately and this could result
in an accident.
- Pay attention to the following warnings list­
ed when work on the fuel system or on the
electrical equipment is required.
- Do not smoke.
- Never work near open flames.
- Always have a working fire extinguisher
nearby.
- All work on the battery or electrical system
in your vehicle can result in injuries, chemi­
cal burns, accidents or burns. Because of
this, all work must be performed
only by an
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk of electric shock and in­
jury, never touch the following components when the engine is running or is being start­
ed:
- Ignition cable
- Other components in the electronic high-
voltage ignition system
- If you must check or perform work on the
engine while it is running:
- Set the parking brake and place the selec­ tor lever in the P (park) position first.
- Always proceed with extreme caution so that clothing, jewelry or long hair do not
become caught in the radiator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie back long hair before beginning
work and do not wear clothing that can
hang down into the engine.
- Limit your exposure to exhaust and chemi­
cals to as short a time as
possible~ &..
A WARNING
California Proposition 6S Warning:
190
-Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and
reproductive harm . In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
@ Note
When filling fluids, be sure not to mix the flu­
ids up. Otherwise severe malfunctions and en­
gine damage will occur.
@ For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If there are visible spots from oil or other fluids, bring your vehicle to an authorized Audi deal­
er or authorized Audi Service Facility to be
checked.

a co ,...,
N
" N ,...,
0 0 <..:l ' Brake fluid
N N ~
~ co al
Fig. 182 Eng ine compartment: cap on brake fluid reservoir
Observe the safety precautions ~.&. in Working
in the engine comportment on page 189.
Checking th e brake fluid level
• Read the brake fluid level on the brake fluid
reservo ir
<=) page 192, fig. 179. The brake fluid
level must be between the MIN and MAX mark­
ings ~,&. .
The brake fluid level is mon itored automat ically.
Changing the bra ke flu id
Have the brake fluid changed regularly by an au­
thorized Audi dealer or authorized Audi Service
Facility .
A WARNING
-If the brake fluid level is be low the MIN
marking, it can impair the braking effect
and dr iving safety, which increase the risk of
an acc ident. Do not cont inue driv ing . See an
au thorized Audi deale r or autho rized Aud i
Service Facility for assist ance .
-If the brake f luid is o ld, bubbles may form
in the b rake system d uring heavy b raking.
T his would impair bra king perfo rman ce an d
driving safety, which increases the risk of an
accident.
- T o ensure the bra ke system functions cor­
rectly, only use brake fluids that comply
with VW standard 50114 or FMVSS-116 DOT 4 .
(D Note
-If the brake fluid level is above the MAX
mar king, brake fluid may leak out over the
Chec king and Filling
edge of the reservo ir and result in damage
to the vehicle.
- Do not get any b rake fl uid on the vehicle
paint, because it wi ll co rrode the paint .
Battery
General warnings about batteries
Because of the complex power supp ly, alt work
o n batter ies such as d isconnecting, replacing,
etc., sho uld
onl y be performed by an au tho riz ed
Audi dealer or au thori zed A udi Se rvice Fac ility
Q A .
The term "vehicle battery" refe rs to the 12 Volt
batte ry in you r vehicle.
Detail ed warnings for the vehicle battery :
Always wear eye protection .
&
Battery acid is highly corrosive. A lways
wear protective gloves and eye protection .
.
®
Fire, sparks, open flame and smoking are
forbidden .
A
A highly explosive mixture of gases can
form w hen cha rging bat ter ies.
®
Always keep children far away from bat-
tery electrolyte and the battery.
~
Always follow the ins tructio ns in the ope r-
ating manual.
A WARNING ~
A ll work on the battery or electrical system in
your vehicle can result in injuries, chemica l
bu rns, acc idents or burns. Because of this, all
work must be performed
only by an author­
i zed Audi dealer or authorized Audi Service
Fac ility .
A WARNING
-Ca lifo rnia Proposition 65 Warning:
- Battery posts, term inals and related acces­
sories contain le ad and lead com pou nds,
ch emi cals known to the Sta te of Californ ia
to cause cancer and reproductive prob lems.
Was h hands after handling.
197

Checking and Filling
(D Note
If the vehicle will be parked for long periods
of t ime , protect it against the co ld so that it
will not be destroyed by "freezing"
c;,page 198 .
Vehicle battery
The term "vehicle battery " refers to the 12 Volt
bat tery in your vehicle.
Not running the vehicle for long pe riods of
t ime
If you do not drive your vehicle for several days o r
weeks , electri cal equipment is gr adually scaled
back or switched off . This reduces energy use and
ensures the veh icle w ill be able to start after long
periods of
time r:::;, page 123 . Some conve nience
functions, s uch as interior lighting or power seat
adj ustment, may not be available under certa in
circumstances. These convenience f unct ions w ill
be ava ilab le aga in once you switch the ignition on
and start the engine .
E ven w hen electrica l equ ipme nt is swi tched off,
the equipment can still d rain the vehicle battery
if the vehicle is not driven for long periods of
time . Deep draining results in a chemical reaction
that destroys the inside of the vehicle battery .
The vehicle battery must be charged every month
t o reduce the risk of this happening
r:::;, page 198.
Contact an author ized Audi dealer or authorized
Aud i Serv ice Facility for more information .
Winter operati on
Cold weather places higher demands on the vehi­
cle battery. This results in reduced start ing abili ­
ty . Have the vehicle battery checked by an au­
thor ized Audi dealer or authorized Audi Service
Facility before the co ld time of year .
198
Charging the vehicle battery
Fig. 183 En g in e compartment : co nn ectors fo r a cha rger
a n d jum p start cab les
Requireme nt: only use chargers with a maximum
charging voltage of 30 amp s/14.8 Volts.
The
vehicle battery cab les remain connected.
... Read the wa rnings r:::;, _& in General warnings
about batteries on page 197
and r:::;, ,& .
... Switch off the ign it ion and all electrica l equip ­
ment .
... Open the hood c;,page 191 .
... Open the red cover on the pos itive terminal
¢fig. 183.
... Clamp the charger terminal clamps to the jump
start p ins accord ing to the instruct ions. (pin un­
der the red cover
= " positive ", pin with hexago­
nal head= "negat ive ").
... In sert t he power cable fo r th e cha rging dev ice
into the soc ket and switch t he devi ce on.
... At the end of the cha rging process, switch the
charger off and pull the power cable out of the
soc ket .
... Remove the charger terminal clamps.
... Close the red cover on the pos itive terminal.
... Close the hood c:;, page 191 .
A WARNING
-A highly explosive m ix ture of gases can form
when charg ing batte ries . Only cha rge the
veh icle b attery in well -ventila ted areas.
- A drained vehicle batte ry can freeze at tem­
pe ra tu res around 32
QF (0 QC). A fro zen o r
thawed vehicle battery must no t be charged
a nd must not be used anymore. If ice forms,
the battery housing can crack and battery
electrolyte can leak out, which increases the
risk of an explosion and chemical burns.
..,.

a co .... N
" N .... 0 0 \,;J ' Contact an authorized Audi dealer or au­
thorized Aud i Serv ice Facility for more infor­
mation.
- Do not connect or disconnect the charging
cable while charg ing because this increases
the risk of an explosion.
(D Tips
-Only charge the vehicle battery through the
connections in the engine compartment.
- Read all of the manufacturer's instructions
for the charger before charging the ve hicle
battery.
Windshield washer system
F ig. 184 Eng ine co mpartment: washer flu id reservoir cap
M N ~ N
"' a, a,
The winds hield washer reservoir O contains the
cleaning solution for the windshield and the
headlight washer system*
c::;,page 192 , fig . 179.
The reservoir capacity can be found in
c::;, page 245 .
To reduce the risk of lime sca le deposits on the
spray nozzles, use clean water w ith low amounts
of calc ium . Always add window cleaner to the wa­
ter . When the outs ide temperatures are cold, an
anti-freez ing agent should be added to the water
so that it does not freeze.
0 Note
- The concentration of anti-freezing agent
must be adjusted to the vehicle operating
cond itions in the respect ive climate. A con­
centration that is too high can lead to vehi­
cl e damage.
Checking and Filling
- Never add radiato r anti -freeze or other addi­
tives to the washer fluid .
- Do not use a glass cleaner that contains
paint solvents, because this could damage
the paint.
Service interval display
The service interval display detects when your ve ­
hicle is due for service .
The service interval display works in two stages:
-Inspection or oil change reminder : after a cer-
tain distance driven, a message appears in the
instrument cluster display each time the igni­
tion is switched on or off. The remaining dis­
tance or time is disp layed briefly.
-Inspection or oil change due: if your vehicle
has reached an inspection or oil change interval
or both intervals at the same time, the mes­
sage
Inspection due! or Oil change due! or Oil
change and inspection due!
appears briefly af­
ter switching the ignition on/off .
Checking service intervals
You can check the remaining distance or time un ­
til the next oi l change or next inspection in the
Car menu. To do this, select: the
I CAR I function
button
> (Car)* Systems control button > Service
& control > Service intervals .
Resetting the indicator
An authorized Audi dea ler or authorized Audi
Service Facility w ill reset the service interval dis­
play after perform ing service .
If you have changed the oi l yourse lf, you must re ­
set the oil change interval.
To r eset the indicat or, select: the
I CARI function
button
> (Car)* Systems control button > Service
& control > Service intervals . Turn the control
knob downward to
Reset oil change interval and
press the control knob.
@ Note
- Only reset the oi l change indicator if the oi l
was changed.
199