Q: iPhone 6s plus Bluetooth constantly reconnecting to 2015 Mercedes-Benz C300

I have an iPhone 6s Plus Bluetooth that constantly disconnecting and reconnecting to my 2015 Mercedes-Benz C300.  This is occurring when using Bluetooth to connect for phone calls as well as Bluetooth audio.  It also occurs when using Bluetooth for phone calls and the USB connection for audio.

Looking at the iPhone 6S Plus console logs, these are the messages I am seeing (sorted by message, not event order):

CommCenter[85] <Warning>: BTM: attempting to connect to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed}

CommCenter[85] <Warning>: BTM: attempting to connect to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed}

CommCenter[85] <Warning>: BTM: attempting to connect to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed}

CommCenter[85] <Warning>: BTM: attempting to connect to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed}

CommCenter[85] <Warning>: BTM: connection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: connection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} failed with error 305

CommCenter[85] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: connection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: connection to service 0xffffffff on device "MB Bluetooth" {MAC_address_removed} failed with error 10711

CommCenter[85] <Warning>: BTM: disconnection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: disconnection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: disconnection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: disconnection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

CommCenter[85] <Warning>: BTM: received BT_SERVICE_DEPENDENT_EVENT event for BT_SERVICE_HANDSFREE

coreduetd[7850] <Warning>: BTM: attempting to connect to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed}

coreduetd[7850] <Warning>: BTM: attempting to connect to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed}

coreduetd[7850] <Warning>: BTM: attempting to connect to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed}

coreduetd[7850] <Warning>: BTM: attempting to connect to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed}

coreduetd[7850] <Warning>: BTM: connection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: connection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} failed with error 305

coreduetd[7850] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: connection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: connection to service 0xffffffff on device "MB Bluetooth" {MAC_address_removed} failed with error 10711

coreduetd[7850] <Warning>: BTM: disconnection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: disconnection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: disconnection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: disconnection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

coreduetd[7850] <Warning>: BTM: received BT_SERVICE_DEPENDENT_EVENT event for BT_SERVICE_HANDSFREE

routined[6987] <Warning>: BTM: attempting to connect to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed}

routined[6987] <Warning>: BTM: attempting to connect to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed}

routined[6987] <Warning>: BTM: attempting to connect to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed}

routined[6987] <Warning>: BTM: attempting to connect to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed}

routined[6987] <Warning>: BTM: connection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: connection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} failed with error 305

routined[6987] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: connection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: connection to service 0xffffffff on device "MB Bluetooth" {MAC_address_removed} failed with error 10711

routined[6987] <Warning>: BTM: disconnection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: disconnection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: disconnection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: disconnection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

routined[6987] <Warning>: BTM: received BT_SERVICE_DEPENDENT_EVENT event for BT_SERVICE_HANDSFREE

sharingd[69] <Warning>: BTM: attempting to connect to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed}

sharingd[69] <Warning>: BTM: attempting to connect to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed}

sharingd[69] <Warning>: BTM: attempting to connect to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed}

sharingd[69] <Warning>: BTM: attempting to connect to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed}

sharingd[69] <Warning>: BTM: connection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: connection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} failed with error 305

sharingd[69] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: connection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: connection to service 0xffffffff on device "MB Bluetooth" {MAC_address_removed} failed with error 10711

sharingd[69] <Warning>: BTM: disconnection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: disconnection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: disconnection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: disconnection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

sharingd[69] <Warning>: BTM: received BT_SERVICE_DEPENDENT_EVENT event for BT_SERVICE_HANDSFREE

SpringBoard[61] <Warning>: BTM: attempting to connect to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed}

SpringBoard[61] <Warning>: BTM: attempting to connect to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed}

SpringBoard[61] <Warning>: BTM: attempting to connect to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed}

SpringBoard[61] <Warning>: BTM: attempting to connect to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed}

SpringBoard[61] <Warning>: BTM: connection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: connection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} failed with error 305

SpringBoard[61] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: connection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: connection to service 0xffffffff on device "MB Bluetooth" {MAC_address_removed} failed with error 10711

SpringBoard[61] <Warning>: BTM: disconnection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: disconnection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: disconnection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: disconnection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

SpringBoard[61] <Warning>: BTM: received BT_SERVICE_DEPENDENT_EVENT event for BT_SERVICE_HANDSFREE

useractivityd[174] <Warning>: BTM: attempting to connect to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed}

useractivityd[174] <Warning>: BTM: attempting to connect to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed}

useractivityd[174] <Warning>: BTM: attempting to connect to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed}

useractivityd[174] <Warning>: BTM: attempting to connect to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed}

useractivityd[174] <Warning>: BTM: connection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: connection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} failed with error 305

useractivityd[174] <Warning>: BTM: connection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: connection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: connection to service 0xffffffff on device "MB Bluetooth" {MAC_address_removed} failed with error 10711

useractivityd[174] <Warning>: BTM: disconnection to service 0x00000001 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: disconnection to service 0x00000002 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: disconnection to service 0x00000008 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: disconnection to service 0x00000010 on device "MB Bluetooth" {MAC_address_removed} succeeded

useractivityd[174] <Warning>: BTM: received BT_SERVICE_DEPENDENT_EVENT event for BT_SERVICE_HANDSFREE