1. A vehicle comprising,a telematics control unit (TCU) configured to,
periodically record in a log wireless activity data relating to an authentication, attachment, signaling, detachment, and handover procedure of the TCU to provide one or more remote vehicle services, and
responsive to detecting a cellular malfunction from the logged data, wirelessly transmit at least a portion of the log that corresponds to the cellular malfunction offboard the vehicle for a remote diagnostic server; wherein
the periodically recorded wireless activity data includes first data that relates to an authentication, attachment, signaling, detachment, or handover activity of the TCU corresponding to the cellular malfunction, and second data that relates to an authentication, attachment, signaling, detachment, or handover activity of the TCU that is not associated with the cellular malfunction,
the TCU is further configured to record the wireless activity data in the log transmitted offboard the vehicle responsive to detecting the cellular malfunction as the wireless activity data is periodically collected by the TCU, and
the log is a first log of the TCU, and the TCU is further configured to, responsive to a component malfunction of the TCU,
record data indicative of the component malfunction in a second log of the TCU, and
wirelessly transmit at least a portion of the first log and the second log offboard the vehicle for the remote diagnostic server.