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Old 06-13-2011, 11:40 AM
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Default BMW z4 e89

  • Service training ST901. BMW z4 e89 complete vehicle. 108 pages. Language - English.
Model: E89
Production: FromStart of Production

After completion of this module you will be able to:
Identify the changes made between the E85 and E89
Identify the different variants of the E89
Identify the components of the Retractable Hardtop
Explain the operation of the Retractable Hardtop
Identify the suspension components
Explain the operation of the Parallel EPS system
Explain the operation of the EMF system
Explain the operation of the new Capacitance Seat Occupancy sensor

Contents:

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Comparison of Body Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Retractable Hardtop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Hydraulic System Circuit Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Hydraulics and Locking Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Mechanical System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Circuit Diagram - Convertible Top Module . . . . . . . . . . . . . . . . . . . . . . . .18
System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Microswitches and Hall Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Buttons for Operating the Hardtop . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Convertible Top Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Drive for Locking the Retractable Hardtop . . . . . . . . . . . . . . . . . . . . . .22
Hydraulic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Instrument Cluster - KOMBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Footwell Module - FRM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Junction Box Electronics - JBE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Car Access System - CAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Antenna Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Operating Pre-Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Opening the Retractable Hardtop . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Operating Conditions with Comfort Access . . . . . . . . . . . . . . . . .26
Automatic Soft Close System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Check Control Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Sensor Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Convenient Loading Function of Rear Lid . . . . . . . . . . . . . . . . . . . . . .30
Emergency Opening of Rear Lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Emergency Actuation of the Retractable Hardtop . . . . . . . . . . . . . . .30

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

E89 Bus Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
MOST Direct Access Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Control Units Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Audio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Antenna Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Multiple Restraint System 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Passenger Seat Occupancy Detection . . . . . . . . . . . . . . . . . . . . . . . .37

E89 Chassis and Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Double-joint Spring Strut Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Dynamic Driving Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Differentiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Changes and New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
E89 Front Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Kingpin Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Central-link Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Suspension Reinforcement Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Function of the EMF Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Brake Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Applying the Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Rolling Monitor with Parking Brake Applied . . . . . . . . . . . . . . . . .63
Temperature Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Releasing the Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Dynamic Emergency Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Parking Brake Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Emergency Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Changing Brake Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Brake Test Rig Recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Suspension and Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Basic Suspension Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Adaptive M Chassis and Suspension . . . . . . . . . . . . . . . . . . . . . . .69
History of Electronic Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Dynamic Driving Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Dynamic Driving Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Electric Power Steering (EPS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Versions of Electric Power Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Distinction from Active Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Features of Electric Power Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Improved Handling Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Greater Driving Comfort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Greater Driving Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Better Environmental Credentials . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Simplifications for the Vehicle Manufacturer . . . . . . . . . . . . . . . . . . . .81

System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Mechanical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
EPS System Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Steering Torque Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
EPS Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
Electric Motor with Position Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Reduction Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
Steering Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
EPS Input Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
EPS Output Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
DME Functions Used by EPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Intelligent Alternator Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Speed-dependent Power Steering Assistance . . . . . . . . . . . . . . . . .96
Active Steering-wheel Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Active Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Damping Roadwheel Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Damping Steering Input from Driver . . . . . . . . . . . . . . . . . . . . . . . .99
Damping of Steering Input by EPS . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Active Roadwheel Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Status Shutdown in the Event of Faults . . . . . . . . . . . . . . . . . . .102
Co-ordination of Specified Settings . . . . . . . . . . . . . . . . . . . . . . . . . .103
Supplementary Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Protection Against Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
End Stop as Software Function . . . . . . . . . . . . . . . . . . . . . . . . . .104

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Adaptive M Chassis and Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Dynamic Driving Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Dynamic driving switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Replacing an EPS System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Intelligent Alternator Control and EPS . . . . . . . . . . . . . . . . . . . . . . . . . .105
Active Steering Wheel Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Protection Against Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Shutdown in the Event of Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Step-down Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Free download - in attached file.
Attached Files
File Type: pdf www.bmwcoders.com_ST901 - E89 Complete Vehicle.pdf (1.93 MB, 418 views)


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The Following 12 Users Say Thank You to Admin For This Useful Post:
4evermetalhead (08-05-2011), AdamGarciaTX (05-01-2013), carjerr (03-22-2015), dcsz4e89 (07-21-2011), duke (08-08-2011), jrwrx7 (06-05-2013), mimiS2912 (02-20-2012), mirek111 (07-13-2011), Shadow4 (03-06-2012), Sleuth (06-29-2011), Tech648 (05-22-2012), woltion (08-31-2011)
  #2  
Old 03-16-2012, 02:09 PM
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Default rvocke

very interesting
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Old 03-10-2014, 09:02 PM
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Does anyone know how to manually open and close a retractable roof on a 2009 Z4?
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  #4  
Old 05-07-2014, 07:44 PM
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I was not able to download the file. Any idea what could be the problem ?
Many thanks. Kind regards.
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Old 06-07-2014, 05:11 PM
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Angry Downloading not working

Why can't I download the manuals or any other instruction manual?
Thanks
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Old 07-01-2014, 04:43 PM
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Sorry, still not working.
GIF?
Would be a great help!
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Old 04-27-2015, 06:51 PM
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How do we download the PDF file in this thread?
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Old 03-07-2016, 12:44 PM
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Hi I cannot download this either, would be a great help as warranty just expired. Thanks, Dave.
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  #9  
Old 09-16-2016, 04:47 AM
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Hi, the download is still not working.
Can you please fix it?

Br
Chris
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Old 06-11-2017, 04:20 AM
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Quote:
Originally Posted by fuzzy46 View Post
Does anyone know how to manually open and close a retractable roof on a 2009 Z4?
Old thread, but the E89 does not support manual open/close.

As for documentation, try this:
[Only for registered users... ]

Filippo
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