2017 AUDI S4 fuel fill door release

Checking and Filling
authorized Audi dealer or authorized Audi
Service Facility for assistance.
Fuel filler door emergency release
If the central locking system is faulty, the fuel
filler door can be unlocked manually.
Fig. 241 L uggage compartment: opening the side t rim
panel
F ig. 242 luggage compartment: fue l fi ller doo r emergency
r elease
The emergency opening mechanism is located
behind the right side trim panel in the luggage
compartment.
• Open the cover in the side panel
¢fig. 241.
• Loosen the loop c> fig. 242 from the retainer
and then pull on the loop carefully
c>0 . The
fuel filler door releases.
• Press on the left side of the fuel filler door to
open it
¢page 298, fig. 239 .
(D Note
Only pull on the loop until you feel resistance .
You will not hear it release. Otherwise you
could damage the emergency re lease mecha­
nism .
300
Selective catalytic
reduction (AdBlue)
General information
Applies to: vehicles with selective catalytic reduct ion
In vehicles with selective catalytic reduction, a
urea solution (AdBlue) is injected into the ex­
haust system before a nitrogen oxide cata lytic
converter to reduce nitrogen emissions.
The Ad Blue is carried in a separate tank in the ve­ hicle. The Ad B lue usage accounts for approxi­
mately 1.0% to 2.5% of the diesel fuel that is
used.
When a message about refi lling the AdBlue ap­
pears in the instrument cluster display, you must
ref ill the Ad B lue yourself or have it refilled by an
authorized Audi dealer or authori zed Audi Service
Facility
c> page 301.
(l} Tips
- The d isp lay indicates the distance rema ining
that can be driven¢
page 300. If the Ad Bl­
ue tank is completely empty, the engine will
not start again after the ignition is switched
off .
- Ad Blue is required by law to operate th is ve­
hicle.
Messages in the instrument cluster display
App lies to: vehicles with selective cata lytic reduction
The display indicates if the Ad Blue level is low or
if there is a system malfunction .
Ad Blue level low
You will be informed in the instrument cluster
display if the Ad Blue in the tank drops below a
certain level. Add at a minimum the amount of
Ad Blue shown in the message:
• Refill with at least x qt (l) Ad Blue . Range
x mi (km)
This message appears when there is only enough
AdBlue left to drive the distance indicated in the
instrument cluster. Fill the AdBlue.
• Refill with at least x qt (I) AdBlue . No en­
gine start in x mi (km ). See owner's manual

<( a, .... N ,....
N .... 0 0
3 a,
Rear lid
Escape latch . . . . . . . . . . . . . . . . . . . . . . . . 343
also refer to Luggage compartment lid . . . 43
Rear Seat Entertainment preparation
refer to Audi Entertainment mobile
Rear seats 217
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Rearview camera
refer to Parking systems . . . . . . . . . . 125, 126
Rear window defogger . . . . . . . . . . . . . . . . . . 70
Reception area . . . . . . . . . . . . . . . . . . . . . . . 204
Recirculation mode (climate control system) 70
Recuperation . . . . . . . . . . . . . . . . . . . . . . . . . 16
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Fuel filler door emergency release . . . . . . 300
Fuel tank capacity . . . . . . . . . . . . . . . . . . . 362
Opening the fuel filler door . . . . . . . . . . . . 298
Remote control Garage door opener (Homelink) . . . . . . . . . 48
also refer to Remote control key . . . . . . . . 38
Remote control key . . . . . . . . . . . . . . . . . . . . 38
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Personali zation . . . . . . . . . . . . . . . . . . . . . . 38
Replacing the battery . . . . . . . . . . . . . . . . .
39
Unlocking/locking . . . . . . . . . . . . . . . . . . . . 40
Remote locking/unlocking
Audi connect Vehicle control . . . . . . . . . . . 182
Removing the caps (wheel bolts) . . . . . . . . . 346
Repair manuals . . . . . . . . . . . . . . . . . . . . . . . 363
Repairs Airbag system . . . . . . . . . . . . . . . . . . . . . . 268
Replacement key . . . . . . . . . . . . . . . . . . . . . . 38
Replacing Light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 355
Reporting Safety Defects . . . . . . . . . . . 243, 244
Reset
refer to Restart (MMI) . . . . . . . . . . . . . . . . 234
Reset button (trip odometer) . . . . . . . . . . . . 12
Resetting the trip odometer . . . . . . . . . . . . . 12
Res idual heat (climate control system) . . . . . 71
Restart
(MMI) . . . . . . . . . . . . . . . . . . . . . . . . 234
Retractor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Reverse gear . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Rewinding (audio/video file) . . . . . . . . . . . . 217
Right control button. . . . . . . . . . . . . . . . . . . . 13
Index
Rims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Ringtone settings . . . . . . . . . . . . . . . . . . . . . 170
Road noise compensation . . . . . . . . . . . . . . 233
Roaming
refer to Data connection . . . . . . . . . . . . . . 178
Roof Emergency closing . . . . . . . . . . . . . . . . . . . . 47
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Roof load . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Route criteria . . . . . . . . . . . . . . . . . . . . . . . . 196
Route guidance
refer to Navigation . . . . . . . . . . . . . . . . . . . 187
Running direction (tires) . . . . . . . . . . . . . . . 348
s
Safe driving habits
Safety 236
Airbag system . . . . . . . . . . . . . . . . . . . . . . 253
Be lts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Cargo .... .. .. .. .. ............... .. 242
Correct seating position . . . . . . . . . . . . . . 23 7
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Safety be lt height adjustment . . . . . . . . . . . 250
Safety belt position . . . . . . . . . . . . . . . . . . . 249
Safety belt height adjustment . . . . . . . . . 250
Safety belts worn by pregnant women . . . 250
Safety belt pretensioner Service and disposal . . . . . . . . . . . . . . . . . . 252
Safety belts . . . . . . . . . . . . . . . . . . . . . . 245, 248
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Danger to passengers who do not wear a
safety belt . . . . . . . . . . . . . . . . . . . . . . . . . 246
Fastening . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Improperly worn . . . . . . . . . . . . . . . . . . . . 251
Indicator light . . . . . . . . . . . . . . . . . . . . . . . 31
Not worn . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Safety belt pos it ion . . . . . . . . . . . . . . . . . . 249
Safety instructions . . . . . . . . . . . . . . . . . . . 247
Securing child safety seats . . . . . . . . . . . . 288
Special considerations for pregnant wom- en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Unfastening . . . . . . . . . . . . . . . . . . . . . . . . 250
Warning/indicator light . . . . . . . . . . . . . . 245
Worn properly . . . . . . . . . . . . . . . . . . . . . . 247
Safety belt warning light . . . . . . . . . . . . . . . 245
377