Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Enabling MFD compass on 2018 VW Golf Mk7.5 - "compass currently not available"

  1. #1
    Verified VCDS User
    Join Date
    May 2018
    Location
    New Mexico, USA
    Posts
    13
    Post Thanks / Like

    Enabling MFD compass on 2018 VW Golf Mk7.5 - "compass currently not available"

    I have a 2018 VW Alltrack S and I'd like to enable the MFD compass that the higher-trim models have. I tried turning on Byte 10 / Bit 6 in [17-Instruments], as previous Golf Mk7 guides have shown, but the compass isn't displaying. When I select the "Compass" page on the MFD, I receive an error on the dashboard indicating "compass currently not available." I also tried activating a few adaptations in [5F-Information Electronics] related to the compass (Car_Function_Adaptations_Gen2-menu_display_compass, Car_Function_List_BAP_Gen2-compass_0x15), but these merely enabled the "Offroad Information" page on the infotainment system, which I don't really need. Interestingly, the offroad monitor only displays engine temperature, oil temperature, and steering angle, not the compass or elevation like the higher-trim Alltracks have. I'm thinking that my base-model S must be lacking some hardware.

    From what I've seen, all 2017 Alltracks have the MFD compass by default, but this seems to have changed with the 2018 Mk7.5 models. For 2018, the base infotainment system is an updated Composition Color unit compared to the Mk7. Perhaps this newer hardware doesn't support a compass by default? I haven't tried pulling down my headliner to see if there's a wire going up to the shark fin antenna.

    Any thoughts on this would be appreciated.

  2. #2
    Verified VCDS User
    Join Date
    May 2014
    Location
    Melbourne, Australia
    Posts
    2,792
    Post Thanks / Like
    iroc86: Intriguing problem - are you saying that "all 2017 Alltracks have the MFD compass by default" - regardless of whether they have SATNAV installed? If so, how (in which module) is the directional information decoded? According to your autoscan HERE, the code-string on your module @ address 5F is:

    Code:
    Byte	Hex	Binary
    0	02	00000010
    1	73	01110011
    2	12	00010010
    3	00	00000000
    4	FF	11111111
    5	00	00000000
    6	00	00000000
    7	00	00000000
    8	41	01000001
    9	22	00100010
    10	00	00000000
    11	01	00000001
    12	00	00000000
    13	10	00010000
    14	00	00000000
    15	00	00000000
    16	9F	10011111
    17	00	00000000
    18	08	00001000
    19	D4	11010100
    20	00	00000000
    21	00	00000000
    22	01	00000001
    23	00	00000000
    24	00	00000000
    since Byte 24, Bit 2 is not set, I assume that you don't have SATNAV - might this be the problem?

    Don
    VW Golf MkVII (MY13) - A3 8V hatch (MY17)

  3. #3
    Verified VCDS User PetrolDave's Avatar
    Join Date
    Dec 2014
    Location
    South Molton, UK
    Posts
    2,325
    Post Thanks / Like
    AFAIK the data needed to display a compass can only be gathered by either a Hall Effect sensor (detecting the Earths magnetic field) or a GPS receiver (as used by a Sat Nav).

    Without either of those IMHO there is no way to get the data necessary to display a compass.

  4. #4
    Verified VCDS User
    Join Date
    May 2018
    Location
    New Mexico, USA
    Posts
    13
    Post Thanks / Like
    Thanks for the replies! My assumption that the 2017 Alltracks have an MFD compass is based on seeing interior pictures and videos of the S, SE, and SEL models. Unfortunately, I haven't scanned a 2017, so I'm not sure if it has any additional modules to decode the information. I think this may have something to do with the infotainment system. From my research, it looks like the S and SE trims for 2017 share the same infotainment system. Both appear to have satellite radio capability. The SEL gets the full-blown navigation system. In 2018, VW has three infotainment systems: 6.5" on the S with no satellite radio, 8" on the SE with satellite but no nav, and 8" on the SEL with sat and nav. It looks like the MFD compass is available on the SE and SEL trims for 2018, with the missing link possibly being satellite capability on the infotainment system.

    My next step is to download some diagrams through erWin and compare the '17 and '18 models. I was under the impression that the compass sensor would be in the roof antenna, but now I'm not so sure. Where would they run the cable if the base radio can't accept it?

    FWIW, I actually tried turning on Byte 24 / Bit 2 in [5F], but it threw a fault. I can post the logs later today.

    EDIT: These trim levels are for the North American (US) market.

  5. Likes Dana liked this post
  6. #5
    Ross-Tech Employee Dana's Avatar
    Join Date
    Jan 2014
    Location
    United States
    Posts
    3,632
    Post Thanks / Like
    I don't know if it will help but I had a short lived 2017 Alltrack SEL Prem and the data is located here:

    http://forums.ross-tech.com/showthre...-Golf-Alltrack

    That was replaced with a T'reg so I don't have access to it, or any Mk7s, currently.

    P.S. I think 75-Telematics handled locating spying and the compass function but I'm not entirely confident.

  7. Likes Uwe liked this post
  8. #6
    Verified VCDS User
    Join Date
    May 2018
    Location
    New Mexico, USA
    Posts
    13
    Post Thanks / Like
    Thanks, Dana! I'll take a closer look at your data this week and see if any of it matches up with my '18 S. I'll also try to post up those [5F] Byte 24 / Bit 2 fault logs soon.

  9. Likes Dana liked this post
  10. #7
    Verified VCDS User
    Join Date
    May 2014
    Location
    Melbourne, Australia
    Posts
    2,792
    Post Thanks / Like
    Quote Originally Posted by iroc86 View Post
    I'll also try to post up those [5F] Byte 24 / Bit 2 fault logs soon.
    iroc86: I suspect that my suggestion may have gotten mixed-up in the process of translating my Aussie speak (it's colloquially called "Strine" down here) to the American vernacular - my apology!!

    When I said "since Byte 24, Bit 2 is not set, I assume that you don't have SATNAV - might this be the problem?" - I wasn't suggesting that simply setting this Byte/Bit was a possible solution to your problem (although in re-reading the text, I can understand how it might be interpreted this way). Rather, I was suggesting that the fact that this Byte/Bit wasn't set on your car meant that your MIB did not have a SATNAV facility and therefore there was no way to decode the car direction information.

    Clearly, the only reason to set Byte24, Bit 2 would be if the MIB unit actually had a functional SATNAV facility in its firmeware/software. Absent this, I would imagine that simply setting this Byte/Bit would produce error messages.

    Don
    VW Golf MkVII (MY13) - A3 8V hatch (MY17)

  11. Likes Dana liked this post
  12. #8
    Ross-Tech Employee Dana's Avatar
    Join Date
    Jan 2014
    Location
    United States
    Posts
    3,632
    Post Thanks / Like
    Quote Originally Posted by iroc86 View Post
    Thanks, Dana! I'll take a closer look at your data this week and see if any of it matches up with my '18 S. I'll also try to post up those [5F] Byte 24 / Bit 2 fault logs soon.
    So I took a close look at my 75 maps and the exact location (my driveway) of their creation is alarming! Although that's eye opening I'm not going to edit those maps. See these AdvMVBs the maps under post #22:

    IDE01712-MAS01779 GPS Position-Length
    IDE01712-MAS01780 GPS Position-Width
    IDE01712-MAS02230 GPS Position-Height
    Last edited by Dana; 05-29-2018 at 11:19 AM.

  13. #9
    Verified VCDS User
    Join Date
    May 2018
    Location
    New Mexico, USA
    Posts
    13
    Post Thanks / Like
    Quote Originally Posted by Dana View Post
    So I took a close look at my 75 maps and the exact location (my driveway) of their creation is alarming! Although that's eye opening I'm not going to edit those maps. See these AdvMVBs the maps under post #22:

    IDE01712-MAS01779 GPS Position-Length
    IDE01712-MAS01780 GPS Position-Width
    IDE01712-MAS02230 GPS Position-Height
    That's pretty crazy! Who knew it would store that kind of info? But here's the really ironic part: I know just where those coordinates are! I'm originally from Murrysville and moved out here to New Mexico just a few months ago. What a small world.

    Don, no worries about the translation . That bit was not set on my car, so I figured I'd try ticking it on to see if it enabled anything else on the instrument panel to allow for the compass. I'm still not sure if my S trim has any hardware for the compass, such as the antenna--I haven't tried to pull down the headliner yet and check it out. As expected, here's the fault when Byte 24 / Bit 2 is set on my car. It has no effect on telling the car to start reading compass data (presumably because the hardware isn't there).

    Code:
                    Address 5F: Information Electr.       Labels: 5G0-035-MIB-ENT2.clb
    Control Module Part Number: 5G6 035 868     HW: 5G6 035 868 
      Component and/or Version: MU-E--ER      671 8395
               Software Coding: 02731200FF00000041220001001000009F0008D40000010004
                Work Shop Code: WSC 00066 790 00147
                  ASAM Dataset: EV_MUEnt4CGen2LGE 001041 (VW37)
                           ROD: EV_MUEnt4CGen2LGE_VW12.rod
                          VCID: 70B92CB0FBA058F7817-8025
    1 Fault Found:
    
    1543 - Control Module Incorrectly Coded 
              U1014 00 [009] - -
              Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 4
                        Fault Frequency: 1
                        Reset counter: 110
                        Mileage: 1880 km
                        Date: 2018.05.29
                        Time: 17:33:25
    
                        Voltage terminal 30: 12.4 V
                        Byte_Coding_Condition-byte_0_condition: OK
                        Byte_Coding_Condition-byte_1_condition: OK
                        Byte_Coding_Condition-byte_10_condition: ERROR
                        Byte_Coding_Condition-byte_11_condition: ERROR
                        Byte_Coding_Condition-byte_12_condition: ERROR
                        Byte_Coding_Condition-byte_13_condition: ERROR
                        Byte_Coding_Condition-byte_14_condition: ERROR
                        Byte_Coding_Condition-byte_15_condition: ERROR
                        Byte_Coding_Condition-byte_16_condition: ERROR
                        Byte_Coding_Condition-byte_17_condition: ERROR
                        Byte_Coding_Condition-byte_18_condition: ERROR
                        Byte_Coding_Condition-byte_19_condition: ERROR
                        Byte_Coding_Condition-byte_2_condition: OK
                        Byte_Coding_Condition-byte_20_condition: ERROR
                        Byte_Coding_Condition-byte_21_condition: ERROR
                        Byte_Coding_Condition-byte_22_condition: ERROR
                        Byte_Coding_Condition-byte_23_condition: ERROR
                        Byte_Coding_Condition-byte_24_condition: ERROR
                        Byte_Coding_Condition-byte_25_condition: ERROR
                        Byte_Coding_Condition-byte_26_condition: ERROR
                        Byte_Coding_Condition-byte_27_condition: ERROR
                        Byte_Coding_Condition-byte_3_condition: OK
                        Byte_Coding_Condition-byte_4_condition: OK
                        Byte_Coding_Condition-byte_5_condition: OK
                        Byte_Coding_Condition-byte_6_condition: OK
                        Byte_Coding_Condition-byte_7_condition: OK
                        Byte_Coding_Condition-byte_8_condition: OK
                        Byte_Coding_Condition-byte_9_condition: OK
    Similarly, here's the code that gets thrown when I select the Compass mode in the MFD. Again, it's looking like there's some absent nav hardware on my '18 S. When I have some more time this weekend, I'm going to compare my scans to the link from Dana and see if anything correlates. At first glance, both the '17 SEL and my '18 S share the same part number for [17-Instruments] but differ on [5F-Information Electr.], which makes sense due to the different infotainment systems.

    Code:
                    Address 17: Instruments       Labels: 5G0-920-XXX-17.clb-SRI3
    Control Module Part Number: 5G1 920 840 C    HW: 5G1 920 840 C
      Component and/or Version: KOMBI         242 0310
               Software Coding: 0BB41005A180CF0502086B001000000000000000
                Work Shop Code: WSC 00066 790 00392
                  ASAM Dataset: EV_DashBoardVDDMQBAB 009060 (VW37)
                           ROD: EV_DashBoardVDDMQBAB_009_VW37.rod
                          VCID: 270B07EC0EEE5F4F10D-8073
    1 Fault Found:
    
    16777022 - Function Restricted due to Interrupted Communications 
              U1110 00 [009] - -
              [BAP_NAV SD_0x32 keine Kommunikation]
              Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 6
                        Fault Frequency: 1
                        Reset counter: 110
                        Mileage: 1880 km
                        Date: 2018.05.29
                        Time: 17:31:32

  14. Likes Dana liked this post
  15. #10
    Verified VCDS User
    Join Date
    May 2018
    Location
    New Mexico, USA
    Posts
    13
    Post Thanks / Like
    So, I finally had a chance to review the erWin documentation for the 2018 Alltrack and investigate this issue further. This post is long, but I hope informative. I found some interesting things. According to the service manual, there are a number of antennas on the Golf Mk7. Here are their locations:





    There isn't any one antenna called out for compass duty, but if I had to guess, I'd say that it's probably part of the Roof Antenna (RX5) as shown in item 3. This is also consistent with previous information I've read about where VW puts the compass antenna.

    Going further, the RX5 antenna connects to EITHER the Front Information Display Control Head (J685) OR the Information Electronics Control Module 1 (J794) depending on how the car is optioned. Per the schematic:





    So, what are these devices? According to the service manual, J685 and J794 are separate components with the Discover Media system (SE and SEL models in North America). For the base S model, which is what I have, the standard Composition Color head unit seems to have J685 and J794 combined into the same component in the dashboard:





    Looking at the component location diagrams, J794, the Information Electronics module, is actually the CD player unit in the glove compartment (item 9 in the first diagram). Note that my Alltrack S does NOT have this unit in the glove compartment. The SE and SEL models that I checked out at the dealership when I bought my car do have it. Item 3 in the second diagram is the head unit display, J685.









    I don't actually know what's behind the dashboard on my car; it might just be an empty space, since the manual seems to imply that J794 is part of J685 with the Composition Color head units. For reference, I looked at a scan of a 2018 Alltrack SE and found the part number for J794, which is 3Q0 035 844. As shown in the picture below (from eBay), this is indeed the same component. You can also clearly see the coaxial jacks on the left side for the various antennas. In the code excerpt, note that a subsystem is listed with part number 5G6 919 605. This is the display inside the dashboard.


    Code:
    Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD2.clb
       Part No SW:  3Q0 035 844 B    HW:  3Q0 035 844 B
       Component: MU-S-S-US     722 0867  
       Serial number:               
       Coding: 02731200FF00000051220001001808009F0508D40120050002
       Shop #: WSC 00066 790 07026
       ASAM Dataset: EV_MUStd4CDELP 001001
       ROD: EV_MUStd4CDELP_VW27.rod
       VCID: 2E060434009226C7D04-807A
    
       Operating And Display Unit 1: 
       Subsystem 1 - Part No SW: 5G6 919 605 C    HW:  5G6 919 605 C
       Component: ABT_Std-2  H50 8130 
       Serial number: VWZ6ZJT3190241      
    
    No fault code found.



    For comparison, the scan from my vehicle only shows a single part number for Information Electronics, which is 5G6 035 868. I haven't been able to find any pictures of this component, but I assume it's the display and module combo in the dashboard.


    Code:
    Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-ENT2.clb
       Part No SW: 5G6 035 868      HW: 5G6 035 868 
       Component: MU-E--ER      671 8395  
       Serial number: 05061700021742
       Coding: 02731200FF00000041220001001000009F0008D40000010000
       Shop #: WSC 00066 790 00147
       ASAM Dataset: EV_MUEnt4CGen2LGE 001041
       ROD: EV_MUEnt4CGen2LGE_VW12.rod
       VCID: 70B92CB0FA2058F7817-8025
    
    No fault code found.

    Now, here's the real kicker: I wanted to see if the compass antenna wiring was even present in my vehicle, since it seems to be on the 2017 and earlier models. If you recall, those compasses can be enabled by simply turning on a few bits with VCDS. So, I pulled down the headliner in the back of my wagon and found this:





    The roof antenna is a dummy! It doesn't have ANY wires going to it at all! I can't explain why this is, but I presume it's a cost-saving measure as a result of changing the infotainment systems for 2018. One thing that I noticed in particular is the full-blown VW Car-Net isn't included on the S-trim 2018s as it was with ALL of the 2017s. Perhaps the "media" features of Car-Net are unnecessary with with new base model infotainment system?

    Here are some pictures to demonstrate. The first one is a 2017 Golf Wolfsburg Edition (essentially base model) that clearly shows the Car-Net communication buttons in the overhead console. Same for the 2018 Alltrack SE. My 2018 Alltrack S does NOT have these buttons.









    The wiring diagram also lists another schematic that shows the RX5 roof antenna connecting to J949, which is listed as "Control Module for Emergency Call Module and Communication Unit." If I had to take a guess, I'd say that was Car-Net. The manual also shows where it's located, which is behind the instrument cluster (item 3 below). This is the [75-Telematics] module that we were discussing earlier that had saved Dana's GPS locations. I've posted an excerpt of the log from that vehicle below, too.






    Code:
    Address 75: Telematics (J949)       Labels: 5QE-035-285.clb
       Part No SW: 5QE 035 285 A    HW: 5QE 035 285 A
       Component: OCULowMQBUS   007 0568  
       Coding: 02730202C2823A017F1E06020000
       Shop #: WSC 00066 790 07030
       ASAM Dataset: EV_OCULowMQB 001006
       ROD: EV_OCULowMQB.rod
       VCID: C3C94CA94AB7B95908-8096
    
    No fault code found.

    So, to make a long story short, it seems that unless my 2018 Composition Color head unit (J794/J685) has an input for the compass antenna (unlikely), I am sorely out of luck in enabling the compass display with VCDS because I don't have the CD player module in the glove compartment that would normally accept this input. Seeing as how I have a faux antenna and the wiring isn't even there, I'm guessing that the 2018 radios don't have the proper input. Unfortunately, I also don't have a Car-Net module, so there's no alternative way to get this information on the CAN bus with my existing hardware. I'm wondering if it would be technically possible to install the J949 module (5QE 035 285) with only the compass input and see what it does. According to the manual, the only other connections are for emergency call and microphone input/output.

    I'd be interested to hear any comments on my observations. What do you think?





  16. Likes Dana, Andy, jyoung8607 liked this post

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •