2018 AUDI A4 immobilizer

Opening and closing
Key set
Fig. 23 Your veh icle key set
@ Remote control key with integrated
mechanical key
You can unlock/lock your veh icle w ith the remote
control key . A mechan ical key is integrated in the
remote control
key ~ page 39.
@ Key fob with vehicle code
Appl ies to veh icles with A udi co nnect vehicle con trol
Open the key tag and scratch to reveal the veh icle
code . You can unlock the Audi connect vehicle
control se rvices* for your vehicle with this vehicle
code . For additional information, see
~ page 198 .
Replacing a key
If a key is lost, see an authorized Audi dealer or
authorized Audi Service Facility. Have
this key de­
activated .
It is important to bring all keys with
you .
If a key is lost, you should report it to your
insu rance company.
Number of keys
You can check the number of keys assigned to
your vehicle in the Infotainment system . To do
this, select the
IM ENU I button > Vehicle > left
control button
> Service & checks> Vehicle in·
formation . This way, you can make sure that you
have all the keys when purchasing a used vehicle.
Electronic immobilizer
The immob ilizer prevents unauthorized use of
the vehicle .
Under certain circumstances, the vehicle may not
be able to start if there is a key from a different
veh icle manufacturer on the key chain.
38
Data in the master key
When dr iving, service and maintenance-re levant
data is continuously stored in your remote con­
trol key. Your A udi service advisor can read out
this data and tell you about the work your vehicle needs . This applies also to vehicles with a con­
venience key*.
Personal convenience settings
If two people use one vehicle, it is recommended
that each person always uses "their own" master
key . When the ign ition is turned off or when the
vehicle is locked, personal convenience settings
for the following systems are stored and as­
s igned to the remote master key.
- Climate control system
-Steering wheel heating*
-Central lockin g system
-Interior lighting*
-Exter ior lighting
- Rain sensor
- Memory function*
- Park ing a id *
-Adaptive cr uise control *
-Active lane assist*
-Side assist*
-Traff ic jam assist*
- Distance warning*
-Audi pre sense*
- Speed warning *
The stored settings are automatically recalled
when you unlock the vehicle, open the doors or
turn on the ignition .
~ WARNING
Always take the vehicle key with you when
leaving the vehicle, even for a short period of
time. This applies particularly when children
rema in in the vehicle . Otherwise the children
could start the engine or operate electrical
equipment such as power windows .
(© Tips
-
-The operation of the remote control key can
be temporarily disrupted by interference
from transmitters near the veh icle work ing
1J11,

Index
Cooling mode (automatic climate
control) . . . . . . . . . . . . . . . . . . . . . . . . . . .
77, 78
Cooling system
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . .
329
Coolant temperature indicator . . . . . . . . . . 11
Crosshairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Cruise control system . . . . . . . . . . . . . . . . . . 102
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Current consumption . . . . . . . . . . . . . . . . . . . 17
D
Data connection . . . . . . . . . . . . . . . . . . . . . . 195
Data protection . . . . . . . . . . . . . . . . . . . 196, 227
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . 153
Date ..... ..... .. ................ . 17,248
Date display . . . . . . . . . . . . . . . . . . . . . . . . . 248
Daytime running lights . . . . . . . . . . . . . . . . . 54
Declaration of compliance
Audi adaptive cruise control . . . . . . . . . . .
386
Audi side assist . . . . . . . . . . . . . . . . . . . . . 386
Ce ll phone package . . . . . . . . . . . . . . . . . . 386
Convenience key . . . . . . . . . . . . . . . . . . . . . 386
Electronic immobilizer.. . . . . . . . . . . . . . . 386
Garage door opener (Home Link) . . . . . . . .
386
Remote control key . . . . . . . . . . . . . . . . . . 386
D EF
refer to AdBlue ... ............ .... .. . 319
Defrosting (windows) . . . . . . . . . . . . . . . . . . . 78
DEF (instrument cluster) . . . . . . . . . . . . . . . . 12
Demo mode
refer to Presentation mode . . . . . . . . . . . . 212
Destination on the map
Using the MMI touch . . . . . . . . . . . . . . . . .
206
Determining correct load limit . . . . . . . . . . 348
Diesel
Diese l particulate filter . . . . . . . . . . . . . . .
322
Prewarming . . . . . . . . . . . . . . . . . . . . . . . . . 83
Diesel Exhaust Fluid (DEF)
refer to AdBlue.. ................ .... 319
Diesel fuel ... .. .. ... .......... .. .. .. . 316
Digita l compass . . . . . . . . . . . . . . . . . . . . . . . 63
Digital Rights Management . . . . . . . . . . . . . 227
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Dimming the exterior mirrors . . . . . . . . . . . . 59
Dimming the rearview mirror . . . . . . . . . . . . 59
390
Directory
refer to Contacts . . . . . . . . . . . . . . . . . . . . 183
D isplay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Infotainment system display . . . . . . 156, 249
Instrument cluster . . . . . . . . . . . . . . . . . . . . 16
Multifunction steering wheel . . . . . . . . . . . 13
Versions (MMI) . . . . . . . . . . . . . . . . . . . . . . 156
D istance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Doors
Emergency locking . . . . . . . . . . . . . . . . . . . .
42
Driver information system . . . . . . . . . . . . . . . 17
Changing views . . . . . . . . . . . . . . . . . . . . . . 13
Energy consumers . . . . . . . . . . . . . . . . . . . . 18
On-board computer . . . . . . . . . . . . . . . . . . . 17
Outside temperature display . . . . . . . . . . . . 10
Service interval display . . . . . . . . . . . . . . . 333
View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Driver seat
refer to Seating position 255
Drives
refer to Media ... .. .. ........... 227, 236
Drive select
refer to Aud i drive select . . . . . . . . . . . . . . 133
Driving economically . . . . . . . . . . . . . . . . . . .
80
Driving offroad . . . . . . . . . . . . . . . . . . . . . . . . 90
Driving safe ly . . . . . . . . . . . . . . . . . . . . . . . . 254
Driving through water . . . . . . . . . . . . . . . . . . 80
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DVD drive (med ia drives) . . . . . . . . . . . . . . . 228
Dynam ic steering . . . . . . . . . . . . . . . . . . . . . 134
Dynamic volume
refer to System volume . . . . . . . . . . . . . . . 252
E
E-mail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Economical rou te .. .. .. ............. .. 211
eco (button) . . . . . . . . . . . . . . . . . . . . . . . . . . 77
EDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Electromechanical parking brak e . . . . . . . . . 88
Electromechanical steering . . . . . . . . . . . . . 1 SO
Electronic immobili zer . . . . . . . . . . . . . . . . . .
38
E lectronic stabilization control
refer to ESC . . . . . . . . . . . . . . . . . . . . 146, 147
Emergency assistance . . . . . . . . . . . . . . . . . 360
Emergency braking function . . . . . . . . . . . . . 88