Un iform Ti re Quality Grading St andards: a
uniform st andard to gr ade th e qu ality of tires
with re ga rd to tread qu alit y, tire traction and
te mp erature ch aracteristics. The qu ality grading
assessment is made by th e manufacturer fo llow‐
ing specifications from th e U. S. go ve rn ment. The
qu ality gr ade of a tire is imprinted on th e side
wa ll of th e tire.
Re commended tire pressu re : th e re commen‐
ded tire pressure is th e tire pressure specified
fo r th e tires mounted to th e ve hicle at th e fa c‐
to ry .
The tire and information ta ble con ta ins th e re c‐
ommended tire pressures fo r cold tires, th e max‐
imum permissible load and th e maximum per‐
missible ve hicle speed.
The tire pressure ta ble con ta ins th e re commen‐
ded tire pressures fo r cold tires under va ri ous
operating conditions, i.e. loading and/or speed
of th e ve hicle.
Increased ve hicle we ight due to optional
equipment: th e combined we ight of all st andard
and optional equipment av ailable fo r th e ve hicle, re ga rd less of whe th er it is actually ins ta lled on
th e ve hicle or not.
Rim: th e part of th e wheel on which th e tire is
ins ta lled.
GA WR (Gross Axle We ight Ra ting): th e GAWR
is th e maximum permissible axle load. The
actual load on an axle must ne ve r exc eed th e
gros s axle we ight ra ting. The gross axle we ight
ra ti ng
can be fo und on th e ve hicle identification
plate on th e B‑pillar on th e driver's side.
Speed ra ting: th e speed ra ting is pa rt of th e tire
identification. It specifies th e speed ra nge fo r
which a tire is appr ove d.
GV W (Gross Ve hicle We ight): th e gross ve hicle
we ight comprises th e we ight of th e ve hicle
including fuel, to ols, th e spare wheel, accesso‐
ri es ins ta lled, occupants, luggage and th e trailer
dr aw bar nose we ight, if applicable. The gros s
ve hicle we ight must not exc eed th e gross ve hicle
we ight ra ting GV WR as specified on th e ve hicle
identification plate on th e B‑pillar on th e driver's
side.
GV WR (Gross Ve hicle We ight Ra ting): th e
GV WR is th e maximum permitted gross we ight of th e fully laden ve hicle (weight of th e ve hicle
including all accessories, occupants, fuel, lug‐
ga ge and th e trailer dr aw bar nose we ight if appli‐
cable). The gros s ve hicle we ight ra ting is speci‐
fi ed on th e ve hicle identification plate on th e
B‑pillar on th e driver's side.
Maximum we ight of th e laden ve hicle: th e
maximum we ight is th e sum of th e curb we ight
of th e ve hicle, th e we ight of th e accesso ri es, th e
maximum load and th e we ight of optional equip‐
ment ins ta lled at th e fa ctor y.
Kilopascal (kPa): metric unit fo r tire pressu re .
6.9 kPa cor re sponds to 1 psi. Ano th er unit fo r
tire pressu re is bar . 10 0 ki lopascal (kPa) equals
1
bar.
Load index: in addition to th e load-bearing
index, th e load index may also be imprinted on
th e side wa ll of th e tire. This specifies th e load-
bearing capacity of th e tire more precisel y.
Curb we ight: th e we ight of a ve hicle with st and‐
ard equipment including th e maximum capacity
of fuel, oil and coolant. It also includes th e air
conditioning sy st em and optional equipment if Wheels and tires 431
Setting ................................................. 235
Ac tive Ste ering Assist ............................ .2 04
Ac tivating/deactivating ...................... .2 06
Ac tive Emergency St op Assist ............ .2 07
Ac tive Lane Change Assi st .................. 206
Displa ys in th e Instrument Display ...... 208
Fu nction .............................................. 204
Sy st em limitations .............................. .2 04
Ad aptive cruise control
see Ac tive Dis ta nce Assi st DISTRONIC
Ad aptive Highbeam Assist
Fu nction .............................................. 14 6
Switching on/off ................................. 14 7
Ad diti ve s .................................................. 44 9
Engine oil ............................................ 44 9
Fu el ..................................................... 44 9
Ad diti ve s (engine oil)
see Ad ditives
Ad diti ve s (fuel)
see Fu el
Ad dress book
see Contacts Ad justing the balance/ fa der
Burmes te r ®
high-end 3D sur ro und
sound sy st em ...................................... 360
Burmes te r ®
sur ro und sound sy st em ... 359
Ad justing the bass, mid- ra nge and
treble
Burmes te r ®
high-end 3D sur ro und
sound sy st em ...................................... 359
Ad justing the mid- ra nge, treble and
bass
Burmes te r ®
high-end 3D sur ro und
sound sy st em ...................................... 359
Ad justing the sound fo cus
Burmes te r ®
sur ro und sound sy st em ... 359
Ad justing the s ound optimization
Bu rmes te r ®
high-end 3D sur ro und
sound sy st em ...................................... 360
Ad justing treble, mid- ra nge and bass
settings
Burmes te r ®
high-end 3D sur ro und
sound sy st em ...................................... 359
ADS PLUS damping sy st em
see AIR BO DY CO NTROL Af te r- sales service center
see ASS YS T PLUS
Air bag ........................................................ 38
Ac tivation .............................................. 32
Belt air bag ............................................ 36
Cushionbag ........................................... 38
Fr ont air bag (driver, front passenger) ... 38
Ins tal lation locations ............................ .3 8
Knee air bag .......................................... 38
Overview ............................................... 38
Pr ot ection ............................................. .3 9
Re duced pr ot ection .............................. .4 0
Side air bag ........................................... 38
Wi ndow air bag ...................................... 38
AIR BO DY CONT RO L ................................ .2 11
Setting ................................................. 21 3
Suspension .......................................... 21 1
Air dis tr ibution
Setting (multimedia sy st em) ............... .1 59
Air freshener sy st em
see Fr ag ra nce sy st em
Air pressure
see Ti re pressure520
Index
