freightliner Sprinter - Page 221

correct tirepressure, even if under-inflation
has notreached theleveltotrigger illumina‐
tion of theTPMS lowtirepressuretelltale.
Your vehicle has also been equipped witha
TPMS malfunction indicator to indicatethat
thesystem is notoperating properly.The
TPMS malfunction indicator is combined with
thelow tirepressuretelltale. When thesys‐
temdetects amalfunction, theindicator lamp
will flash forapproximately one minuteand
then remain continuously illuminated. This
sequence will continue upon subsequent
vehicle start-ups as longasthe malfunction
exists.
When themalfunction indicator is illuminated,
thesystem maynot be able to detect or sig‐
nal lowtirepressureasintended. TPMSmal‐
functions mayoccurfor avariety of reasons,
includingthe installation of replacement or
alternatetires or wheels on thevehicle that
prevent theTPMS from functioning properly.
Alwayscheckthe TPMS malfunction telltale
afterreplacing one or moretires or wheels on
your vehicle to ensurethat thereplacement
or alternatetires and wheels allowthe TPMS
to continuetofunction properly.
The system checks thetirepressureand thetem‐
peratureofthe tires installed on thevehicle by
means of atirepressuresensor.
Newtirepressuresensors, e.g. in winter tires,
areautomatically taught-in during thefirst jour‐
neytheyare used.
The tirepressureand thetiretemperatureappear
in themultifunction display(/page168).
If thereisasubstantiallossoftirepressure, a
warning is issued:
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Viadisplaymessages (/ page273)
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Viathe h warning lampinthe instrument
cluster
It is thedriver's responsibility to setthe tirepres‐
suretothe recommended cold tirepressuresuit‐
able forthe operating situation. Setthe tirepres‐
surefor cold tires using atirepressure gauge.
Note that thecorrect tirepressurefor thecurrent
operating situationmustfirst be taught-in to the
tirepressuremonitoring system.
In mostcases, thetirepressuremonitoring sys‐
temwillautomatically updatethe newreference
values afteryou have changed thetirepressure.
Youcan,however, also updatethe reference val‐
ues by restartingthe tirepressuremonitoring
system manually(/page220).
System limits
The system maybeimpaired or maynot function
in thefollowing situations:
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If thetirepressureisset incorrectly
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If thereisasudden pressureloss caused by a
foreign object penetratingthe tire, forexam‐
ple
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If thereisamalfunction caused by another
radio signal source
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If thereisachangeoftiresize
Wheelsand tires
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