Bmw 330XI Manuel d'utilisateur télécharger pdf (Page 85)

85

Tire Pressure Monitor (TPM)*

The concept

TPM monitors the tire pressures at all

four tires even while the vehicle is mov-

ing. The system provides an alert when-

ever the inflation pressure drops signifi-

cantly below the specified pressure in

one or more tires.

This indicator lamp in the instru-

ment cluster informs you when

the tire pressure deviates from

the target values.

Initializing the system

Initializing is necessary to familiarize the

system with the correct inflation pres-

sures.

Repeat this process after tire replace-

ment, tire rotation or any changes in tire

inflation pressure.

1. Check the tire inflation pressures in

all the tires, comparing them with the

inflation pressure chart on page 25

and adjusting their pressure if neces-

sary

2. Turn ignition key to position 2, do not

start the engine

3. Press the button long enough for the

yellow indicator lamp in the instru-

ment cluster to light up for a few sec-

onds

4. After a few minutes' driving time,

TPM sets the current inflation pres-

sures in the tires as the target values

to be monitored.

In the event of loss in inflation

pressure

If the inflation pressure has dropped

significantly over a long period of time,

which is normal for any tire, the yellow

indicator lamp will come on.

This alerts you to have the tires inflated

to the specified pressures as soon as

possible.

If you are prompted to check the

tire pressure shortly after a cor-

rection has been made, this indicates

that the corrected values were not

valid. Please check the inflation pres-

sure again and make corrections

according to the inflation pressure

table. Then reinitialize the system.<

Flat tire

If there is a tire failure with loss of pres-

sure, a red light will appear in the indi-

cator lamp. This visual alert is accom-

panied by an acoustic warning signal.

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