th es yst em is no to perating properly .T he
TPMS malfunction indicator is combined with
th el ow tir ep re ssur ei ndicator lamp. When
th es yst em de te cts am alfunction, th ei ndica‐
to rl amp wil lf lash fo ra pp ro xima te ly am inute
and th en re main continuously illumina te d.
This sequence will continue upon subsequent
ve hicle st art-ups as lon gast he malfunction
ex ists.
When th em alfunction indicator is illumina‐
te d, th es ys te mm ay no tbea ble to de te ct or
signal lo wt ir ep re ssur easi ntended. TPMS
malfunctions ma yo ccu rf or av ariety of re a‐
sons, includin gt he ins tal lation of incompati‐
ble re placemen tora lternat et ires or wheels
on th ev ehicle th at pr ev ent th eT PMS from
functioning proper ly .
Alw ay sc hec kt he TPMS malfunction wa rn ing
lam pa ft er re placing one or mor et ires or
wheels on yo ur ve hicle to ensur et hat th e
re placemen tora lternat et ires and wheels
allo wt he TPMS to continu etof unction prop‐
er ly . Using at ir ep re ssur es ensor ,t he sy st em ch ec ks
th et ir ep re ssur eoft he tires ins ta lled on th e
ve hicle.
Ne wt ir ep re ssur es ensors, e.g. in winter tires,
ar ea utomaticall yt aught-in th ef ir st tim et he
ve hicle is driven.
The tir ep re ssur ea ppea rs in th em ultifunction
displa y( →
pag e1 97 ).
If th er eisas ubs ta ntia lp re ssure loss or if th e
tir et emperatur eise xc essive, aw arning will be
given: R
Vi ad ispla ym essages ( →
pag e3 82 ).R
Vi at he w wa rn ing lam pint he instrument
clus te r( →
pag e4 10 ).
It is th ed ri ve r's re sponsibility to se tt he tire
pressur etot he re commended cold tir ep re ssure
suitable fo rt he operating situation. Se tt he tire
pressur ef or cold tires using at ir ep re ssu re
ga uge. No te th at th ec or re ct tir ep re ssur ef or th e
cur re nt operating situatio nm us tf ir st be ta ught-
in to th et ir ep re ssur em onitoring sy st em.
In mos tc ases, th et ir ep re ssur em onitoring sys‐
te mw il la utom atically updat et he ne wr eference va lues af te ry ou ha ve ch anged th et ir ep re ssure.
Yo uc an ,h ow ev er ,a lso updat et he re fe re nce va l‐
ues by re st artin gt he tir ep re ssur em onitoring
sy st em manuall y( →
pag e3 18 ).
Sy st em borders
The tir ep re ssur em onitoring sy st em does not
issue aw arning: R
If th et ir ep re ssur eiss et incor re ctly.R
If th er eisas udden pressur el oss caused, fo r
ex ample, by af oreign object penetratin gt he
tire. R
If th er eisam alfunction caused by ano th er
ra dio signal source.
Be sur etoa lso obse rv et he fo llowing fur th er
re lated subjects: R
No te sont ir ep re ssur e( →
pag e3 12 )
Checking th et ir ep re ssur ew it ht he tir ep re s‐
sur em oni to ri ng sy st em
Requ irements R
The ignition is switched on. Wheels and tires 317
