User:Kraln

2023-10-11T10:16:39Z

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friendly neighborhood electrical engineer. [https://kraln.com kraln.com]

BMW F-Series Gear Lever

2023-10-11T10:06:43Z

Kraln: Add information on slightly older gear shifts with different connectors, add backlight information, correct misinformation (wrong CRC final-xor).

==General Information==
Much of this information is based on articles by Project Gus <ref>https://www.projectgus.com/tag/bmw-f-series-gws.html</ref> and a forum post from Bimmerwelt<ref name=":0">https://www.bimmerfest.com/threads/2tb-sat-gear-shift-retrofit.660759/page-7#post-9575078</ref>. Thank you for reverse engineering!

===Pinout and Connector===
The BMW supply number of the connector is 9132576-02, the TE part number is 2-929423-2 but the connector is not freely available from TE <ref>https://www.te.com/usa-en/product-2-929423-2.html</ref>. The BMW Part number for the 10-position socket housing is widely available as 61-13-9-132-577.
{| class="wikitable"
|+10-Pin Pinout
!Pin
!Type
!Wire Colour
!Function
|-
|1
|
|
|NC
|-
|2
|
|
|NC
|-
| 3
|E/A
| Red
|PT-CAN Low
|-
|4
|E/A
|Blue/Red
| PT-CAN High
|-
|5
| E/A
|White/Blue
|PT-CAN2 Low
|-
|6
|E/A
|White/Yellow
|PT-CAN2 High
|-
|7
|E
|Green/Brown
|Wakeup<ref name=":0" />
|-
|8
|M
|Brown
|Ground
|-
|9
|
|
|NC
|-
|10
|E
|Red/Blue
| +12V
|}
Earlier versions of the shifter have a different, 8-pin connector (7 pins fitted)<ref name=":0" /> with the following pinout, but nevertheless communicate with the same CAN protocol as the newer shifters. The 8-pin version has a 2.54 (0.1") spacing.
{| class="wikitable"
|+ 8-Pin Pinout
!Pin
!Type
!Wire Color
!Function
|-
|1
|E
|Red/Green
| +12V
|-
|2
|E
|Green/Red
|Wakeup
|-
|3
|E/A
|Red
|PT-CAN Low
|-
|4
|E/A
| Blue/Red
|PT-CAN High
|-
|5
|M
| Brown
|Ground
|-
|6
|E/A
|White/Blue
|PT-CAN2 Low
|-
|7
|E/A
|White/Yellow
|PT-CAN2 High
|-
|8
|
|
|NC
|}

===CAN Bus===
The Powertrain CAN Bus has a baud rate of 500kBaud.

GWS sends a "heartbeat" to CAN ID 0x55e<ref>https://www.projectgus.com/2022/07/bmw-f-series-gear-selector-part-three-success/</ref>, Diagnostic Errors to CAN ID 0x65e, and more frequent 4-byte GWS status message to CAN ID 0x197. When an impossible action is requested (for instance, shifting from neutral to reverse without also pressing "unlock"), an additional CAN message is sent.
{| class="wikitable"
!Status message Byte
!Meaning
|-
|0
|CRC8 of bytes 1-3 (poly=0x1D, init=0x0, xor=0x53)
|-
| 1
|Counter value, 4 bits wide, should change each message, never 0x0F
|-
|2
|Lever position
|-
|3
|Park button (0xC0 normally, 0xD5 if Park is pressed)
|}
Lever position byte values include:
{| class="wikitable"
!Value
! Meaning
|-
|0x0E
|Centre middle
|-
|0x1E
|Pushed "up" (towards front of car)
|-
|0x2E
|Pushed "up" two notches
|-
|0x3E
|Pushed "down" (towards back of car)
|-
|0x4E
|Pushed "down" two notches
|-
|0x7E
|Centre side
|-
|0x5E
|Pushed "side and up"
|-
|0x6E
|Pushed "side and down"
|}
To update the GWS appearance, message ID 0x3FD has to be sent every 50-100ms:
{| class="wikitable"
!Byte
!Meaning
|-
|0
|CRC8 of bytes 1-4 (init=0x00, poly=0x1D, xor=0x70)
|-
|1
|4-bit counter (must increment each message), not 0x0F
|-
|2
|Payload byte 0
|-
|3
|Payload byte 1
|-
|4
|Payload byte 2
|}
Payload byte 0 controls the GWS appearance:
{| class="wikitable"
! Payload byte 0
!Display
|-
|0x00
| Blank gear selection (appears off)
|-
|0x20
| P
|-
|0x80
|D
|-
|0x81
|D, can move to M/S
|-
|0x81
|M/S (if lever moved to side)
|-
|0x40
|R
|-
| 0x60
|N
|-
| + 0x08
|To flash the selected gear light
|}
Payload bytes 1 & 2 are ignored by the GWS.

To set the backlight of the GWS, message ID 0x202 should be sent as follows:
{| class="wikitable"
|+
!Byte
!Meaning
|-
|0
|Backlight Level (0x00 - 0xFF)
|-
|1
|Unknown (0 works)
|}

====CAN Diagnostics ====
BMW UDS uses "extended 11-bit ISO-TP addressing", and the GWS responds to at least some standard UDS requests sent to ID 0x5e (first byte of CAN messages).<ref>https://www.projectgus.com/2022/06/bmw-f-series-gear-selector-part-two-breakthrough/</ref>

==Part Numbers==
[[File:BMW F-Series Gear Selector.png|thumb|BMW F-Series Gear Selector (LHD Version) <ref>https://www.bmw-etk.info/parts-catalog/prd/BMW/VT/P/F20N/SH/125i/BRA/L/N/2015/05/57228/25/25_0519</ref>]]

{| class="wikitable"
|+
Normal Version
!No
! LHD/RHD
!Description
!Part Number
!Vehicles Used
!Status
!Tested
|-
|1
|RHD
| Gear Selector Switch
|61 31 9296897
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Active
|
|-
|1
|RHD
|Gear Selector Switch
|61 31 9291519
|
|Until 06/2013
|
|-
|1
|RHD
|Gear Selector Switch
| 61 31 9260969
|
|Until 08/2012
|
|-
|1
|RHD
|Gear Selector Switch
|61 31 9253652
|
|Until 01/2011
|
|-
|
|
|
|
|
|
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9296896
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Active
|
|-
| 1
| LHD
|Gear Selector Switch
|61 31 9291517
|
|Until 11/2012
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9260968
|
|Until 06/2013
|
|-
|1
|LHD
|Gear Selector Switch
|61 31 9253651
|
|Until 01/2011
|
|}

{| class="wikitable"
|+
Sport Version
!No
!LHD/RHD
!Description
!Part Number
!Vehicles Used
!Status
!Tested
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 7950385
|
|Active
|
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9296899
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Until 05/2018
|X
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9291521
|
|Until 11/2012
|
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9260971
|
|Until 07/2012
|
|-
|2
|RHD
|Gear Selector Switch, Sport
|61 31 9253654
|
|Until 01/2011
|
|-
|
|
|
|
|
|
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 7950384
|
|Active
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9296898
|F20, F21, F22, F23
F30, F31, F32, F33, F34, F36
|Until 01/2019
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9291520
|
|Until 06/2013
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9260970
|
|Until 06/2013
|
|-
|2
|LHD
|Gear Selector Switch, Sport
|61 31 9253653
|
|Until 01/2011
|
|}

==References==
<references />

[[Category:OEM]]
[[Category:BMW]]
[[Category:Accessories]]

openinverter.org wiki - User contributions [en]

User:Kraln

BMW F-Series Gear Lever