Vehicle control device

An information communication system comprising:

• a server that is an off-vehicle device;
• and
• a vehicle control device that is connected to a communication device that communicates with the server, wherein
• the vehicle control device includes:
• a storage unit that includes a nonvolatile memory;
• a command processing unit that issues a command to the storage unit;
• an input/output unit that exchanges information with the storage unit based on the command issued by the command processing unit;
• an off-vehicle communication request processing unit that performs processing on an off-vehicle communication request with the server;
• and
• a log acquisition unit that acquires diagnostic log information of the storage unit in response to the off-vehicle communication request with the server,
• the log acquisition unit performs necessity determination as to whether or not it is necessary to acquire the diagnostic log information of the storage unit in response to the off-vehicle communication request with the off-vehicle device, and
• in a case where the log acquisition unit determines that it is necessary to acquire the diagnostic log information of the storage unit, the command processing unit issues a second command for acquiring the diagnostic log information of the storage unit by adding the second command to a first command for exchanging information according to the off-vehicle communication request with the off-vehicle device.

A degradation diagnosis method for a nonvolatile memory included in a vehicle control device connected to a communication device that communicates with an off-vehicle device, the degradation diagnosis method comprising:

• an acquisition determination step of determining whether or not it is necessary to acquire diagnostic log information of a storage unit including the nonvolatile memory in response to an off-vehicle communication request with the off-vehicle device;
• a diagnostic log information acquisition step of acquiring the diagnostic log information of the storage unit in a case where it is determined in the acquisition determination step that it is necessary to acquire the diagnostic log information;
• and
• a diagnosis step of diagnosing a degradation state of the storage unit based on the diagnostic log information acquired in the diagnostic log information acquisition step.