HDC is automatically deactivated at speeds
greater than approx. 35 mph/60 km/h.
Flat Tire Monitor FTM*
The concept
Using HDC
The Flat Tire Monitor detects pressure loss in a
tire by comparing the rotating speeds of the
individual tires while moving.
In cars with manual transmission:
Use HDC in lower gears and in reverse gear.
With automatic transmission:
You can use HDC in any drive position.
In the event of pressure loss, the rolling circum-
ference changes and, thus, the rotating speed
of the affected wheel. This change is detected
and is reported as a flat tire.
Displays in the instrument cluster*
Functional requirement
In order to assure the reliable reporting of a flat
tire, the system must be initialized for the cor-
rect tire inflation pressure.
The system must be reinitialized each
time a tire inflation pressure has been cor-
rected or a wheel or tire has been changed.<
System limitations
1
2
Display for target speed
HDC display
The Flat Tire Monitor is unable to warn
the driver of sudden, severe tire damage
caused by external factors, nor can it identify
the gradual loss of pressure that will inevitably
occur in all four tires over a lengthy period of
time.<
Malfunction
The HDC display disappears during HDC oper-
ation, or does not appear:
HDC is temporarily unavailable due to exces-
sive brake temperature, or DSC has failed.
In the following situations, the system could be
delayed or malfunction:
>
>
System has not been initialized
Drive-off assistant
Driving on snowy or slippery road surface
The drive-off assistant enables you to drive off >
smoothly on uphill gradients. It is not necessary
Performance-oriented style of driving: slip
in the drive wheels, high lateral acceleration
to use the parking brake for this.
>
Snow chains are attached
1.
Hold the car in place by depressing the
brake.
Initializing the system
2.
Release the brake and drive off without
delay.
The initialization is completed during driv-
ing, which can be interrupted at any time.
When driving resumes, the initialization is con-
tinued automatically.
Do not initialize the system while snow chains
are attached.<
The drive-off assistant holds the car in
place for approx. 2 seconds after the
brake is released. Drive off without delay after
releasing the brake. Otherwise, the drive-off
assistant will no longer hold the car in place
after approx. 2 seconds and the car will start to
roll backwards.<
For operating principle refer to page 64.
72
Online Edition for Part no. 01 41 2 602 977 - © 08/09 BMW AG
| Categories | BMW 3-Series Manuals, BMW M3 Manuals, BMW Manuals |
|---|---|
| Tags | BMW 328i, BMW 328xi, BMW 335i, BMW 335xi, BMW E90, BMW E91, Wagon |
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| Copyright | Attribution Non-commercial |
(1 votes, average: 4 out of 4)
Automotive readers have rated 2010 BMW 3 Series Sedan Owners Manual 4.0 out of 4.0 based on 1 product reviews. Very Good format, easy to understand. Almost is 100% in English with a few German-isms......
Very Informative.