Runflat Indicator Rpa; Triggered Pedestrian Protection System; Operating Requirements - BMW 116i 2011 Owner's Handbook Manual

For safety reasons, the system may also trigger
in rare instances where impact with a pedestrian
cannot be excluded beyond all doubt, for exam‐
ple:
▷ Collision with a skip or boundary posts.
▷ Collision with animals.
▷ Stone impact.
▷ Driving into a snow drift.
Triggered pedestrian protection
system
After triggering or damage
After triggering of the active bonnet or if
damaged, check the system and have it re‐
placed.
Only have this work carried out a Service Centre,
as otherwise correct functioning of this safety
device is not ensured.◀
Malfunction
A Check Control message is displayed.
The system has been triggered or is
faulty.
Drive at a moderate speed to the next Service
centre to have the system checked and re‐
paired.
Do not open bonnet.
Do not open the bonnet after the warning
light appears, as otherwise damage may oc‐
cur.◀
Notes
Do not dismantle/modify the system
Do not dismantle the system or modify it
in any other way.
Do not modify the individual components of the
system or its wiring in any way.◀
If faulty, taken out of use or triggered
Only commission your Service centre with
the inspection, repair, disassembly or scrapping
of the system. Any careless or unskilled inter‐
ference with the system could lead to its failure
Online Edition for Part no. 01 40 2 607 643 - 07 11 490
or to accidental triggering with the risk of in‐
jury.◀

Runflat indicator RPA

Principle
The system does not measure the tyre pres‐
sures as such.
It detects a pressure loss on the basis of a com‐
parison between the speeds at which the indi‐
vidual wheels rotate while the vehicle is in mo‐
tion.
If a tyre loses pressure, its diameter changes.
This in turn alters the rotational speed of the
corresponding wheel. This is detected and re‐
ported as a flat tyre.

Operating requirements

The system must have been initialised with cor‐
rect tyre inflation pressure, otherwise reliable
signalling of a flat tyre cannot be assured. Each
time the tyre pressure is adjusted or a tyre or
wheel is changed, initialise the system again.
System limits
Sudden tyre damage
No warning can be given of extreme, sud‐
den tyre failure caused by external factors.◀
A natural, even loss of pressure in all four tyres
that occurs over time is not detected. Conse‐
quently, check the tyre pressures at regular in‐
tervals.
In the following situations, the system could be
slow to respond or operate incorrectly:
▷ If the system has not been initialised.
▷ When driving on snow-covered or slippery
surfaces.
▷ When driving enthusiastically, causing the
driven wheels to spin, high lateral accelera‐
tion.
▷ Driving with snow chains*.
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