BMW Z4 Owner's Manual download pdf (Page 96)

Status of passenger airbags

The indicator lamp for the front passenger air‐

bags indicates the operating status of the front

and side airbags on the front passenger side

depending on the seat occupation. The indica‐

tor lamp shows whether the passenger airbags

are activated or deactivated.

▷ The indicator lamp lights up when a child

who is properly seated in a child restraint

system intended for that purpose is de‐

tected on the seat or the seat is empty.

The front and side airbags on the front

passenger side are not activated. Most

child seats are detected by the system. Es‐

pecially the child seats required by NHTSA

at the time that the vehicle was manufac‐

tured. After installing a child seat, make

sure that the indicator lamp for the front

passenger airbags lights up. This indicates

that the child seat has been detected and

the front passenger airbags are not acti‐

vated.

▷ The indicator lamp does not light up when,

for example, a person of sufficient size and

in a correct sitting position is detected on

the seat. The front and front passenger air‐

bags on the front passenger side are acti‐

vated.

Operational readiness of airbag

system

When the ignition, refer to page 58, is switched

on, the warning lamp comes on briefly to indi‐

cate that the entire airbag system and the belt

tensioners are operational.

Airbag system malfunction

▷ The warning lamp does not light up when

the ignition is switched on.

▷ Warning light remains permanently on.

Have the airbag system checked without

delay if there is a malfunction

In the event of a malfunction in the airbag sys‐

tem, have it checked without delay; otherwise,

there is the risk that the system will not func‐

tion as intended even if a sufficiently severe

accident occurs.◀

Flat Tire Monitor FTM

The concept

The system detects a pressure loss in a tire on

the basis of speed differences between the in‐

dividual wheels during a trip.

In the event of pressure loss, the rolling cir‐

cumference changes and, thus, the rotating

speed of the affected wheel. This change is

detected and is reported as a flat tire.

Functional requirements

The system must have been initialized when

the tire inflation pressure was correct; other‐

Seite 94

Controls Safety

94

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