check engine light AUDI Q7 2020 Owner´s Manual
Page 9 of 316
4M1012721BA 
Quick access 
  
PESOGKED oe esciee vo acres vo asteame ww awe 81 
— Vehicle key holder 
Depending on equipment: 
  
      
— Audi music interface .......... 213 
—Audi phone box ............... 167 
—SDicard readers. we.isi ccna eve 210 
@ Electromechanical parking brake 
BUEEGN segue ¢  s enme ¢  x ae © 2 eee e 104 
@9 Automatic transmission selector 
LEVEN scoop: «  & eres ¢  o ane a  2 eee Fe 96 
@ [START ENGINE STOP] button .... 94 
@ Steering wheel adjustment ...... 64 
@3) Lever for: 
— Cruise control system ......... 130 
— Adaptive cruise assist .......... 134 
@4 Connection port for the On Board 
Diagnostic System (OBD) ........ 288 
@3) Buttons for: 
Lights as 5  2 egies 5  ¢ ewe yo ees & 45 
—All-weather lights ............ 45 
— Rear fog lights ............... 45 
@8 Hood release ..............00-% 234 
@2 Button for: 
— Luggage compartment lid ...... 36 
Exterior mirror adjustment ...... SL. 
@9) Buttons for: 
— Power windows ...........00. 40 
— Child safety lock .............. 40 
@ Tips 
Some the equipment listed here is only instal- 
led in certain models or is available as an op- 
tion. 
Indicator lights overview 
The  indicator lights in the instrument cluster 
blink or turn on. They indicate functions or mal- 
functions. Some warning and indicator lights 
turn on when you switch the ignition on and must 
turn off when the drive system is switched on or 
while driving. 
With some indicator lights, messages may ap- 
pear and warning signals may sound. The indica- 
tor lights and messages may be covered by other 
displays. To show  them again, select the second 
tab for messages with the multifunction steering 
wheel & page 12. 
Some indicator lights in the display can display in 
several colors. 
A\ Central indicator light 
If the A or indicator light turns on, check 
the message in the instrument cluster. 
The following indicator lights may be available, 
depending on the vehicle equipment: 
  
Red indicator lights 
Central indicator light 
=> page 7, 
Instrument cluster 
=> page 11 
Safety belt 
=> page 69 
   
   
   
   
   
  
   
    
  
   
    
    
  
   
    
   
    
   
   
   
   
   
  
Engine start system 
=>page 95 
Transmission 
=> page 99 
Drive system 
=> page 101, 
Electrical system 
=> page 242 
Electromechanical parking brake 
=> page 104 
Electromechanical parking brake 
=>page 105 
Brake system 
=> page 103, > page 105, 
=> page 241 
Brake system 
=> page 103, > page 105, 
=> page 241 
Steering 
=>page 110 
Steering lock 
=>page 110  
Page 99 of 316
4M1012721BA 
Driving 
  
—To skip a gear (for example, move from “D” to 
“R”), move the selector lever past the pressure 
point in the desired direction. 
— The label next to the selector lever for the se- 
lected gear will light up. 
“N” (Neutral) gear 
In the “N” gear, power is not transmitted to the 
driving wheels. Use the “N” gear in a car wash 
(with conveyor belts), for example. 
If you unintentionally select “N” while driving 
(faster than 1 mph (2 km/h)), you can also shift 
back to “D” without pressing the brake pedal. 
For safety reasons, the vehicle cannot be locked 
when the transmission is in the  "N” gear. 
“Pp” (Park) gear 
Requirement: the ignition must be switched on. 
The vehicle is secured from rolling away by the 
parking lock when in the “P” gear. 
— Bring the vehicle to a full stop and press the 
brake pedal. 
— Press the “P” button 2) on the selector lever. 
—The “P” next to the selector lever will light up. 
“P” engages automatically if you switch the en- 
gine off while the  “D” or “R” gear is selected. If 
you switch the engine off in “N”, “P” will engage 
automatically after approximately 30 minutes. 
If you want to switch to another gear from “P”, 
the engine must be running. 
If you cannot shift out of “P”, for example be- 
cause the vehicle has no power, you may need to 
use the emergency release for the parking lock 
=> page 98. 
Selecting the driving program 
Various driving programs can be selected when in 
the “D” gear. The programs influence when the 
transmission shifts and how the accelerator ped- 
al responds. 
The selected driving program is displayed in the 
instrument cluster. 
—  D (Drive): normal driving mode 
—S (Sport): sporty driving mode 
If you select the Dynamic mode in Audi drive se- 
lect*, the “S” driving program will be activated. 
When the ignition is switched off, the driving pro- 
gram  may be reset to “D”. 
To switch between the current driving program 
and “S”, push the selector lever toward the rear. 
  
ZA WARNING 
— Before starting to drive, check if the desired 
gear is displayed next to the selector lever. 
— Always secure your vehicle from rolling 
away. Press the brake pedal or shift to “P”. 
When leaving the vehicle, also set the park- 
ing brake. 
— Power is still transmitted to the wheels 
when the engine is running at idle. To pre- 
vent the vehicle from “creeping”, you must 
keep  your foot on the brake in all selector 
lever positions (except "P" and "N") when 
the engine is running. 
—To reduce the risk of an accident, do not 
press the accelerator pedal when changing 
gears if the vehicle is stationary and the en- 
gine is running. 
— Never select the “R" or "P” gears while driv- 
ing. Doing so could cause an accident. 
— The vehicle can roll even if the ignition is 
switched off. 
      
(i) Tips 
If you shift between “D” and “R” within one 
second, you do not need to press the brake 
pedal. This makes it possible to “rock” if it is 
stuck, for example. 
97  
Page 104 of 316
Driving 
  
— If you select the "D" position after shifting 
into reverse, the vehicle must be driven fast- 
er than 6 mph (10 km/h) in order for the 
Start/Stop system to become active again. 
This makes it possible to maneuver without 
stopping the engine. 
Stopping and starting the engine 
Applies to: vehicles with Start/Stop system 
> Press and hold the brake pedal until the vehicle 
has stopped. The @ indicator light appears in 
the instrument cluster once the engine stops 
automatically. 
> The engine starts again when you remove your 
foot from the brake pedal. The  indicator light 
turns off. 
@) Tips 
— Press the brake pedal during a Stop phase 
to keep the vehicle from rolling. 
— The ignition will turn off if you press the 
START ENGINE STOP] button during a Stop 
  
      
phase. 
— If you leave the vehicle briefly during a Stop 
phase, the driver's door must be closed and 
the safety belt buckled for the engine to be 
able to restart. 
— You can control if the engine will stop or not 
by reducing or increasing the amount of 
force you use to press the brake pedal. For 
example, if you only lightly press on the 
brake pedal in stop-and-go traffic or when 
turning, the engine will not switch off when 
the vehicle is stationary. If you press the 
brake pedal harder, the engine will switch 
off. 
Starting and stopping the engine automat- 
re] NY 
Applies to: vehicles with Start/Stop system 
The system checks if certain conditions are met 
before and during the Stop phase, and deter- 
mines if the engine stops and how long it re- 
mains stopped. For example, if power usage is 
  
D_ In certain countries. 
102 
high, the engine will not be stopped. Along with 
other conditions, the following factors influence 
the automatic engine start or stop: 
— Environmental conditions (slopes, inclines, ele- 
vation, temperature) 
— Battery  (charge status, temperature, power us- 
age) 
— Engine temperature 
— Assist systems 
— Driving behavior 
Messages 
Applies to: vehicles with Start/Stop system 
Drive system: please start the vehicle manually 
This message appears when specific conditions 
are not met during a Stop phase. The Start/Stop 
system will not be able to restart the engine. The 
engine must be started with the 
START ENGINE STOP] button. 
  
      
Vehicle starting system: malfunction! Please 
contact Service 
There is a malfunction in the Start/Stop system. 
Drive the vehicle to an authorized Audi dealer or 
authorized Service Facility as soon as possible to 
have the malfunction corrected. 
Brakes 
General information 
You can apply the vehicle's brakes using the brake 
pedal. 
Operating noise 
Noises may occur when braking depending on the 
speed, braking force, and outside conditions such 
as temperature and humidity. 
Braking effect 
The response time from the brakes depends on 
the weather and environmental conditions. To 
ensure the optimal braking effect, the brake sys- 
tem is cleaned at regular intervals. This is done 
by applying the brake pads to the brake rotors for >  
Page 106 of 316
Driving 
  
assistance. Read and follow the other safety pre- 
cautions > A\. 
GG y @ Brake pads: wear limit reached. You 
can continue driving. Please contact Service 
The  brake pads are worn. Drive to an authorized 
Audi dealer or authorized Audi Service Facility as 
soon as possible to have the malfunction correct- 
ed. 
Brake booster: limited functionality.You can 
continue driving. Please contact Service 
There is a brake booster malfunction. The  brake 
booster is available, but its effectiveness is re- 
duced. The braking performance may be different 
compared to the usual performance. Drive to an 
authorized Audi dealer or authorized Audi Service 
Facility immediately to have the malfunction cor- 
rected. 
Brake booster: deactivated. See owner's manual 
The  brake booster remains active for a brief peri- 
od of time after switching off the ignition. Secure 
the vehicle from rolling by setting the parking 
brake and select the “P” gear. 
Other indicator lights 
When you switch the ignition on, the indicator 
light IBRAKE| ii @ turns on briefly to check the 
function. If the indicator light does not turn on, 
there is a system malfunction. 
1f RG / @ stays on, there is a malfunction in 
the brake system. 
if) is displayed when there is a malfunction, 
the brakes were under heavy load. Follow the in- 
structions in the message to utilize the engine 
braking effect and to relieve  the brakes. 
  
ZA\ WARNING 
If a malfunction occurs in the ABS, ESC, and 
braking distribution, interventions that stabi- 
lize the vehicle will no longer be available. 
This could cause the vehicle to swerve, which 
increases the risk that the vehicle will slide. 
Do not continue driving. See an authorized 
Audi dealer or authorized Audi Service Facility 
for assistance. 
      
104 
Electromechanical 
parking brake 
Operating the parking brake 
The electromechanical parking brake is used to 
secure the vehicle from rolling away unintention- 
ally. 
The @) switch is located under the selector lever 
in the center console. It turns on when the park- 
ing brake is set. You can release the parking brake 
manually or automatically when you start to 
drive. 
Setting and releasing the parking brake 
> Setting: pull the ©) switch. 
> 1f i i © appears, the parking brake is hold- 
ing the vehicle. You can remove your foot from 
the brake pedal. 
> Releasing: when the ignition is switched on, 
press and hold the brake pedal and press the 
button. 
If the red indicator light flashes, the braking 
force has not built  up enough or it has decreased. 
You can also secure the vehicle by selecting the 
“P” gear or pressing the brake pedal. Make sure 
the indicator light is off before you start driving. 
Automatically releasing the parking brake 
when starting to drive 
Requirement: the driver's door must be closed 
and the driver’s safety belt must be fastened. 
> Press the accelerator pedal to start to drive. 
  
ZA WARNING 
—To reduce the risk of an accident, always 
make sure the vehicle is situated safely 
while stationary. 
— If the parking brake is set, it can release au- 
tomatically when the accelerator pedal is 
pressed. To reduce the risk of an accident, 
do not inadvertently press the accelerator 
pedal and always shift into “P” when the ve- 
hicle is stopped. 
— If the power supply fails, you cannot set the 
parking brake once it is released, or release 
it if  it  is set. In this case, park the vehicle on 
  
     
Page 109 of 316
4M1012721BA 
Driving 
  
@ For the sake of the environment 
Avoid actions that are damaging to the envi- 
ronment. Show respect for the natural envi- 
ronment and remain on marked routes. 
@ Tips 
Clean your vehicle after driving offroad. Dirt 
and stones falling off your vehicle can affect 
other road users. 
Driving through water 
If you must drive through water, follow these in- 
structions: 
— Check the stability of the ground, the current, 
and the water depth. If the ground is unstable, 
there is a strong current, or there are waves, 
the water must only reach up to the lower edge 
of the body at the most. 
— Deactivate the Start/Stop system. 
— Drive carefully and no faster than at walking 
speeds to prevent the front of the vehicle from 
creating waves, because they could splash 
above the lower edge of the body. Oncoming 
vehicles could also create waves. 
— Do not stop the vehicle while in the water. 
— Drive in reverse. 
— Do not turn the engine off. 
Hill descent assist 
Applies to: vehicles with hill hold assist 
The “& button is located in the function bar on 
the lower display. It lights up when the system is 
turned on. 
Hill descent assist can assist you when driving 
down hills by maintaining a constant vehicle 
speed by automatically braking all four wheels. 
You can adjust the speed using the accelerator 
and brake pedals. The regulation depends on the 
hill and the vehicle speed. 
> Switching on: press a 
> Switching off: press “2 again. 
Active regulation 
Regulation begins shortly after you start driving 
and is possible at speeds up to approximately 19 
mph (30 km/h) and on hills that have an approxi- 
mately 6-60% grade. If these conditions are met, 
regulation will be activated and the indicator 
light will turn on. 
Ready mode 
If one of the requirements for active regulation is 
not met, the system will be in ready mode. The 
a indicator light will turn on. Once the require- 
ments are met again, the system will be able to 
provide active regulation again. 
  
ZA WARNING 
After driving through water, press the brake 
pedal carefully to dry the brakes so that the 
full braking effect will be restored. 
@) Note 
Vehicle components such as the engine, drive 
system, suspension, or electrical system, can 
be severely damaged by driving through wa- 
ter. 
@ Tips 
If possible, avoid driving through salt water 
because it increases the risk  of corrosion. Use 
fresh water to clean any  vehicle components 
that come into contact with salt water. 
      
ZA WARNING 
— Be ready to apply the brakes at all times 
when using the hill hold assist. 
— Always adjust the speed to the visibility, 
weather, road, and traffic conditions. The 
system cannot replace the driver's atten- 
tion. 
— The system cannot maintain a constant vehi- 
cle speed in all situations, for example when 
on smooth or slippery ground. This can in- 
crease the risk of an accident. 
G) Tips 
If you select the Audi drive select* offroad 
mode, hill descent assist will switch on. 
       
107  
Page 113 of 316
4M1012721BA 
Driving dynamic 
  
the vehicle, and the turning radius may be much 
larger. Slow down immediately, and stop your ve- 
hicle as soon as possible in a safe location with 
enough space at the sides of the vehicle. Do not 
continue driving. See an authorized Audi dealer 
or authorized Audi Service Facility for assistance. 
2 —<| Steering: malfunction! Please stop vehicle 
There is a malfunction in the electronic steering 
lock. You cannot turn the ignition on. Do not tow 
your vehicle because it cannot be steered. See an 
authorized Audi dealer or authorized Audi Service 
Facility for assistance. 
& Steering: malfunction! You can continue 
driving 
There is a malfunction in the steering system. 
Steering may be more difficult or more sensitive. 
Adapt your driving style. Have the steering sys- 
tem checked immediately by  an authorized Audi 
dealer or authorized Audi Service Facility. Please 
note that the red indicator light may turn on af- 
ter restarting the engine. Do not continue driving 
if  it does. 
& Steering: malfunction! Adapt driving style. 
Larger turning radius 
The rear axle steering may have failed. The vehi- 
cle will have a larger turning radius, and the sta- 
bility when driving around curves will be compa- 
rable to a vehicle without rear axle steering. Drive 
carefully to an authorized Audi dealer or author- 
ized Audi Service Facility to have the malfunction 
corrected. 
|e —o| Steering lock: malfunction! Please contact 
Service 
There is a malfunction in the electronic steering 
lock. Drive immediately to an authorized Audi 
dealer or authorized Audi Service Facility to have 
the malfunction repaired. 
  
Z\ WARNING 
Do not tow your vehicle if there is a malfunc- 
tion in the electronic steering lock because 
this increases the risk of an accident. 
      
@) Tips 
—If there is a malfunction, the steering wheel 
may be crooked when driving straight. 
—Ifthe a or a indicator light only stays on 
for a short time, you may continue driving. 
All wheel drive (quattro) 
Applies to: vehicles with all wheel drive 
The all-wheel drive system distributes the driving 
power variably to the front and rear axle to im- 
prove the driving characteristics. It works togeth- 
er with  selective wheel torque control, which can 
activate when driving through curves 
=> page 112. 
The all-wheel drive system is designed for high 
engine power. Your vehicle is exceptionally pow- 
erful and has excellent driving characteristics 
both under normal driving conditions and on 
snow and ice. Always read and follow safety pre- 
cautions > A\. 
  
Z\ WARNING 
— Even in vehicles with all wheel drive, you 
should adapt your driving style to the cur- 
rent road and traffic conditions to reduce 
the risk  of an accident. 
— 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 drive  too fast because this in- 
creases the risk of an accident. 
— Note that on wet streets, the front wheels 
can “hydroplane’” if driving at speeds that 
are too high. Unlike front wheel drive 
vehicles, the engine RPM does not increase 
suddenly when the vehicle begins hydro- 
planing. Adapt your speed to the road condi- 
tions to reduce the risk  of an accident. 
Sport differential 
Applies to: vehicles with sport differential 
       
The  sport differential distributes the drive power 
to the rear axle based on the situation. The goal 
is  a high level of agility and ability to accelerate 
111  
Page 231 of 316
4M1012721BA 
Checking and Filling 
  
Checking and Filling 
Fuel 
Types of gasoline 
The correct gasoline grade is stated on the inside 
of the fuel filler door. 
The vehicle is equipped with a catalytic converter 
and must only be driven with unleaded gasoline. 
Audi recommends using TOP TIER Detergent Gas- 
oline. For additional information on TOP TIER De- 
tergent Gasoline, visit www.toptiergas.com. 
The individual gasoline grades are differentiated 
by octane ratings. This value is given with (R 
+M)/2 equating to AKI or in RON. 
The headings below match the sticker in the fuel 
filler door (examples): 
UNLEADED FUEL ONLY MIN. (R+M)/2 87 
Regular / MIN. RON 91 Regular 
Use regular gasoline with minimum 87 AKI / 
91 RON > ©. 
Audi recommends using premium gasoline with 
minimum 91 AKI / 95 RON to achieve the rated 
horsepower and torque. 
UNLEADED FUEL ONLY PREMIUM MIN. (R 
+M)/2 91 / SUPER MIN. RON 95 
Using premium gasoline with minimum 91 AKI / 
95 RON is recommended. 
If premium gasoline is not available, you can also 
use regular gasoline 87 AKI / 91 RON. However 
this does reduce the engine power slightly. 
() Note 
— Filling the tank just one time with leaded 
fuel or other metallic additives will cause 
permanent deterioration to the catalytic 
converter function. 
— When gasoline with an octane rating that is 
too low is used, high speeds or heavy engine 
load can lead to engine damage. 
@) Tips 
The vehicle may be filled with fuel that has a 
higher octane rating than what is required by 
the engine. 
Gasoline mixture 
Gasoline with alcohol or MTBE (Methyl-Tert- 
Butyl-Ether) 
You can  use unleaded gasoline mixed with alco- 
hol or MTBE (generally labeled as oxygenated 
compounds) as long as the fuel meets the follow- 
ing conditions: 
Gasoline with methanol content (methyl alco- 
hol 
or methanol) 
— Anti-Knock Index is at least 87 AKI 
—No more than 3% methanol 
— More than 2% solvent 
Gasoline with ethanol content (ethyl alcohol or 
ethanol) 
— Anti-Knock Index is at least 87 AKI 
—No more than 15% ethanol 
Gasoline with MTBE content 
— Anti-Knock Index is at least 87 AKI 
—No more than 15%  MTBE 
Gasoline adapted to the season 
Many gasoline fuels are adapted to the seasons. 
When the season changes, we recommend refu- 
eling at high-traffic gas stations. It is more likely 
that the gasoline will be suitable for the season 
there. 
() Note 
— Gasoline with methanol content that does 
not meet the specified conditions may cause 
corrosion damage and damage to plastic or 
rubber components in the fuel system. 
— Do not use gasoline that does not meet the 
specifications. 
— If you are unable to find out if a specific gas- 
oline mixture meets the specifications, ask 
the  gas station operator or their fuel suppli- 
er. 
229 
>  
Page 233 of 316
4M1012721BA 
Checking and Filling 
  
The correct fuel type for your vehicle can be 
found ona label located on the inside of the fuel 
filler door. For additional information on fuel, see 
=> page 229. 
For the tank capacity in your vehicle, refer to the 
Technical Data > page 297. 
To reduce the risk of fuel leaking out or vapors 
escaping, make sure that the fuel tank is closed 
correctly. Otherwise the Ey indicator light will 
turn on. 
If the central  locking system malfunctions, there 
is  a fuel filler door emergency release 
=> page 232. 
Messages 
FAY Tank system: malfunction! Please contact 
Service 
There is a malfunction in the fuel tank system. 
Drive to an authorized Audi dealer or authorized 
Audi Service Facility immediately to have the 
malfunction corrected. 
  
flying sparks. Sparks can start a fire when 
refueling. 
     
  
Z\ WARNING 
Improper fueling procedures and improper 
handling of fuel can lead to explosions, fires, 
severe burns, and other injuries. 
— Do not smoke. Keep away from  open flames. 
— The ignition must be switched off when re- 
fueling. 
— Mobile devices, radio devices, and other ra- 
dio equipment should always be switched 
off when refueling. Electromagnetic rays 
could cause sparks and start a fire. 
— If you do not insert the fuel pump nozzle all 
the way into the filler tube, then fuel can 
leak out. Spilled fuel can ignite and start a 
fire. 
— Never get into the vehicle when refueling. If 
there is an exceptional situation where you 
must enter the vehicle, close the door and 
touch a metal surface before touching the 
fuel pump nozzle again. This will reduce the 
risk  of electrostatic discharge that can cause 
  
  
A WARNING 
Transporting fuel containers inside the vehicle 
is not recommended. Fuel could leak out of 
the container and ignite, especially during an 
accident. This can cause explosions, fires, and 
injuries. 
— Ifyou must transport fuel in a fuel contain- 
er, note the following: 
— Always place the fuel container on the 
ground before filling. Never fill the fuel 
container with fuel while it is inside or on 
the vehicle. Electrostatic discharge can oc- 
cur while  refueling  and the fuel vapors 
could ignite. 
— When using fuel containers made of met- 
al, the fuel pump nozzle must always re- 
main in contact with the container to re- 
duce the risk  of static charge. 
— Insert the fuel pump nozzle as far as pos- 
sible into the filler opening while refuel- 
ing. 
— Follow the applicable legal regulations in 
the country where you are driving when 
using, storing and transporting fuel con- 
tainers. 
— Make sure that the fuel container meets 
the industry standards, for example ANSI 
or ASTM F852-86. 
    
    
  
) Depending on the engine and country 
@) Note 
— Remove fuel that has overflowed onto any 
vehicle 
components immediately to reduce 
the risk  of damage to the vehicle. 
— Never drive until the fuel tank is completely 
empty. The irregular supply of fuel that re- 
sults from that can cause engine misfires. 
Uncombusted fuel may enter the exhaust 
system and increase the risk of damage to 
the catalytic converter. 
231  
Page 234 of 316
Checking and Filling 
  
— Do not overfill the fuel tank, or fuel could 
leak out when the vehicle is warming up. 
— Fuel should never  enter the sewer system or 
come into contact with the ground. 
  
The fuel filler door on your vehicle does not 
lock if you lock the vehicle from the inside us- 
ing 
the central  locking  switch. 
Fuel filler door emergency release 
Applies to: vehicles with manual fuel filler door release 
If the central locking system malfunctions, the 
fuel filler door can be unlocked manually. 
  
release 
The emergency release mechanism is located be- 
hind the right light cover in the luggage compart- 
ment. 
> Remove the screwdriver from the vehicle tool 
kit > page 273. 
> Use the screwdriver to remove the light cover 
> fig. 162. 
232 
> To unlock the fuel filler door, loosen the red 
loop from the retainer and then pull  on the 
loop carefully > fig. 163 >@. 
> Press on the left side of the fuel filler door to 
open it > page 230, fig. 160. 
Only pull  on the loop until you feel resistance. 
You 
will not hear it release. If you continue to 
pull, you could damage the emergency re- 
lease mechanism. 
Emissions control 
system 
General information 
  
  
The temperature of the exhaust system is 
high, both when driving and after stopping 
the engine. 
— Never touch the exhaust tail pipes once they 
have become hot. This could result in burns. 
— Do not park your vehicle over flammable 
materials such as grass or leaves because 
the high temperature of the emissions sys- 
tem could start a fire. 
— Do not apply underbody protectant in the 
exhaust system area, because this increases 
the risk of fire. 
Catalytic converter 
Follow the safety precautions > page 232, Gener- 
al information. 
  
  
The vehicle may only be driven with unleaded 
gasoline, or the catalytic converter will be de- 
stroyed. 
Never drive until the tank is completely empty. 
The irregular supply of fuel that results from that 
can cause engine misfires. Uncombusted fuel 
could enter the exhaust system, which could 
cause overheating and damage to the catalytic 
converter.  
Page 235 of 316
4M1012721BA 
Checking and Filling 
  
Malfunction Indicator Lamp (MIL) 
If the S indicator light blinks or turns on, there 
is  a malfunction that is causing poor emissions 
quality and that could damage the catalytic con- 
verter. Drive slowly to an authorized Audi dealer 
or authorized Audi Service Facility to have the 
malfunction corrected. 
The  indicator light can also turn on if the fuel fill- 
er cap is not closed correctly > page 230”. 
Engine compartment 
General information 
Special care is required if you are working in the 
engine compartment 
For work in the engine compartment, such as 
checking and filling fluids, there is  a risk of in- 
jury, scalding, accidents, and burns. For this 
reason, follow all the warnings and general 
safety precautions provided in the following in- 
formation. The engine compartment is  a dan- 
gerous area in the vehicle. > A\. 
  
Z\ WARNING 
— Turn the engine off. 
— Switch the ignition off. 
— Set the parking brake. 
— Select the “P” (Park) selector lever position. 
— Allow the engine to cool. 
— Keep children away from the engine com- 
partment. 
— Never spill fluids on a hot engine. These flu- 
ids (such as the freeze protection contained 
in the coolant) can catch fire. 
— Avoid short circuits in the electrical system. 
— Never reach into the radiator fan. The fan is 
temperature-controlled and can turn on 
suddenly, even when the ignition is switched 
off. 
— Never open the hood when there is steam or 
coolant escaping from the engine compart- 
ment, because there is a risk that you could 
      
  
) Depending on the engine and country 
  
  
be burned. Wait until  no steam or coolant is 
escaping. 
The cap on the coolant expansion tank must 
never be opened when the coolant is hot. 
The  cooling system is under pressure. There 
is a risk of burns 
To protect your face, hands, and arms from 
hot steam or coolant, cover the cap with a 
thick  cloth when opening. 
Do not remove the engine cover under any 
circumstances. This increases the risk of 
burns. 
Due to the risk  of electric shock, never touch 
the ignition cable or other components in 
the electronic high-voltage ignition system 
when the engine is running or is starting. 
If a gear is engaged while the vehicle is sta- 
tionary and the engine is running, do not 
press the accelerator pedal inadvertently. 
Pressing the accelerator pedal will cause the 
vehicle to move, and this could result in an 
accident. 
If inspections or repairs must be performed 
while the engine is running, moving compo- 
nents (such as the ribbed belt, generator, 
and radiator fan) pose an additional risk. 
— Set  the parking brake first and select the 
“P” (Park) selector lever position. 
— Always make sure that no parts of the 
body, jewelry, ties, loose clothing, and 
long hair can be caught in moving engine 
components. Before any work, always re- 
move any jewelry and/or ties, tie back long 
hair, and make sure all clothing fits close 
to the body to reduce the risk of anything 
becoming caught in engine components. 
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. 
    
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