Variable termination in a vehicle communication bus

A system comprising:

• one or more computer processors;
• and
• one or more computer-readable mediums storing instructions that, when executed by the one or more computer processors, cause the system to perform operations comprising:
• detecting that a device has been connected to a high-speed communication bus implemented within a vehicle, the high-speed communication bus including a pair of signal wires connected by a first terminator resistor;
• determining whether a configuration of a software selectable terminator resistor should be modified to achieve a resistance between the pair of signal wires of the high-speed communication bus that is within a threshold resistance range, the software selectable terminator resistor being configured in a first configuration, wherein determining whether the configuration of the software selectable terminator resistor should be modified comprises:
• transmitting an identifier associated with the vehicle to a remote computing system, the remote computing system maintaining a vehicle data index including data identifying whether the configuration of the software selectable terminator resistor should be in the first configuration or a second configuration for each of a plurality of vehicles;
• and
• receiving, from the remote computing system, a response indicating that the configuration of the software selectable terminator resistor should be in the second configuration, the remote computing system having determined that the configuration of the software selectable terminator resistor should be in the second configuration based on the identifier and the vehicle data index;
• and
• in response to determining that the configuration of the software selectable terminator resistor should be modified to achieve the resistance within the threshold resistance range, modify the configuration of the software selectable terminator resistor from the first configuration to the second configuration.

A non-transitory computer-readable medium storing instructions that, when executed by one or more computer processors of one or more computing devices, cause the one or more computing devices to perform operations comprising:

• detecting that a device has been connected to a high-speed communication bus implemented within a vehicle, the high-speed communication bus including a pair of signal wires connected by a first terminator resistor;
• determining whether a configuration of a software selectable terminator resistor should be modified to achieve a resistance between the pair of signal wires of the high-speed communication bus that is within a threshold resistance range, the software selectable terminator resistor being configured in a first configuration, wherein determining whether the configuration of the software selectable terminator resistor should be modified comprises:
• transmitting an identifier associated with the vehicle to a remote computing system, the remote computing system maintaining a vehicle data index including data identifying whether the configuration of the software selectable terminator resistor should be in the first configuration or a second configuration for each of a plurality of vehicles;
• and
• receiving, from the remote computing system, a response indicating that the configuration of the software selectable terminator resistor should be in the second configuration, the remote computing system having determined that the configuration of the software selectable terminator resistor should be in the second configuration based on the identifier and the vehicle data index;
• and
• in response to determining that the configuration of the software selectable terminator resistor should be modified to achieve the resistance within the threshold resistance range, modify the configuration of the software selectable terminator resistor from the first configuration to a second configuration.