# Recent Sync3 update navigation not accurate **URL:** \ **Category:** Non SYNC 3 Support\ **Created:** [14 August 2023 03:48 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755 "2023-08-14T03:48:43Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![gwise032](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/g/7993a0/32.png) [@gwise032](https://community.cyanlabs.net/u/gwise032)\ **Post date:** [14 August 2023 03:48 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755/1 "2023-08-14T03:48:43Z")
Hi, I recently updated my sync 2 to sync 3.4. My car didn’t come with navigation originally but the upgraded unit did. When I first installed the compass was backwards in either north and south or east and west and the navigation was obviously wrong as well but would correct itself in a few minutes. I disconnected the gps antenna that came with the car and that helped out some but it was still off. I did make a couple of updates with forscan that the online vendor provided and it helped some. The compass seems to work fine now but the navigation shows that I am further away then I am. For instance when I leave my house it shows I am at the next intersection when I am only half way down the street. I’ve master reset, purchased new antennas in varios locations, nothing. I have a 2015 mustang eco boost. Any suggestions would be much appreciated. * * * **SYNC Region:** NA **Navigation Variant:** Nav **Manufacturer Year:** Unknown **Install Type:** Unknown **Old SYNC Version:** 2 **New SYNC Version:** 3.4 **Do you have a error message, if so what is it?** B1087 - LIN Bus “A” **Update Method:** Official Ford ---
**Author:** ![Rollback\_Jockey](https://community.cyanlabs.net/user_avatar/community.cyanlabs.net/rollback_jockey/32/2479_2.png) [@Rollback\_Jockey](https://community.cyanlabs.net/u/Rollback_Jockey)\ **Post date:** [14 August 2023 09:15 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755/2 "2023-08-14T09:15:08Z")
> [@gwise032](#): > > B1087 The error is related to a headlamp control module, check underbonnet ground wires. ---
**Author:** ![gwise032](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/g/7993a0/32.png) [@gwise032](https://community.cyanlabs.net/u/gwise032)\ **Post date:** [14 August 2023 13:25 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755/3 "2023-08-14T13:25:43Z")
Thanks for the feedback, I went back and looked at my notes and the error is more exactly: B1087:01-0B ---
**Author:** ![gwise032](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/g/7993a0/32.png) [@gwise032](https://community.cyanlabs.net/u/gwise032)\ **Post date:** [14 August 2023 14:27 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755/4 "2023-08-14T14:27:42Z")
Hi, I recently updated my sync 2 to sync 3.4. My car didn’t come with navigation originally but the upgraded unit did. When I first installed the unit the compass was backwards in either north and south or east and west and the navigation was obviously wrong as well but would correct itself in a few minutes. I disconnected the gps antenna that came with the car and that helped out some but it was still off. I did make a couple of updates with forscan that the online vendor provided and it helped some. The compass seems to work fine now but the navigation shows that I am further away then I am. For instance when I leave my house it shows I am at the next intersection when I am only half way down the street. I’ve master reset it several times, purchased new antennas and placed in various locations on the car, nothing. I have a 2015 mustang eco boost. Any suggestions would be much appreciated. * * * **SYNC Region:** NA **Navigation Variant:** Nav **Manufacturer Year:** Unknown **Install Type:** Unknown **Old SYNC Version:** 2 **New SYNC Version:** 3.4 **Do you have a error message, if so what is it?** B1087:01-0B **Update Method:** Official Ford ---
**Author:** ![CyanLabs](https://community.cyanlabs.net/user_avatar/community.cyanlabs.net/cyanlabs/32/15113_2.png) [@CyanLabs](https://community.cyanlabs.net/u/CyanLabs)\ **Post date:** [14 August 2023 18:25 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755/5 "2023-08-14T18:25:14Z")
> [@gwise032](#): > > B1087:01-0B > [@Help - APIM - Sync3.4 - DTC B1087: 01-0B - Lin Bus 'A' not disappear](https://community.cyanlabs.net/t/help-apim-sync3-4-dtc-b1087-01-0b-lin-bus-a-not-disappear/2342/9): > > Now it all makes sense, thanks again for the explanation. Can we consider that there should be a specific pin for the LIN network, or is the LIN network the same as the I-CAN that we have on the connector? [DTC] Sorry, the image is in Portuguese, but basically: Code: B1087: 01-0B - Lin Bus A Symptoms: General electrical failure As for AS-Built, I used the destination car, which also had a Sync3, but without NAV. (Only enabling Gyr. And Navigation) [WhatsApp Image 2021-01-05 at 17.14.50] W… ---
**Author:** ![system](https://community.cyanlabs.net/letter_avatar_proxy/v4/letter/s/bcef8e/32.png) [@system](https://community.cyanlabs.net/u/system)\ **Post date:** [13 September 2023 18:25 UTC](https://community.cyanlabs.net/t/recent-sync3-update-navigation-not-accurate/10755/6 "2023-09-13T18:25:56Z")
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.