Vehicles, systems, and methods for operating a trailer brake output circuit according to a trailer profile

1. A method comprising:

making a query-presentation determination during a second ignition-on cycle of a vehicle, the query-presentation determination comprising a determination that a trailer brake output circuit of the vehicle was operated during a first ignition-on cycle of the vehicle preceding the second ignition-on cycle;

in response to making the query-presentation determination, presenting a query via a user interface of the vehicle whether to operate the trailer brake output circuit according to a previously-used trailer profile according to which the trailer brake output circuit was operated during the first ignition-on cycle preceding the second ignition-on cycle;

receiving a reply, associated with the query, via the user interface; and

in response to receiving the reply, operating the trailer brake output circuit based on the received reply.

2. The method of claim 1 ,

wherein making the query-presentation determination further comprises making a determination that a trailer is coupled to the vehicle.

3. The method of claim 2 ,

wherein making the determination that a trailer is coupled to the vehicle comprises making a determination that the trailer brake output circuit is electrically coupled to trailer brakes of the trailer via a 7-pin connection.

4. The method of claim 3 ,

wherein making the query-presentation determination further comprises making a determination that the trailer brake output circuit was electrically coupled to trailer brakes of a trailer via a 7-pin connection during the first ignition-on cycle.

5. The method of claim 1 ,

wherein making the query-presentation determination further comprises:

making a determination that the trailer brake output circuit was not electrically coupled to trailer brakes via a 7-pin connection during the first ignition-on cycle; and

making a determination that the trailer brake output circuit is not electrically coupled to trailer brakes via a 7-pin connection.

6. The method of claim 1 ,

wherein the reply comprises an instruction to operate the trailer brake output circuit according to the previously-used trailer profile, and

wherein operating the trailer brake output circuit based on the reply comprises operating the trailer brake output circuit according to the previously-used trailer profile.

7. The method of claim 1 , further comprising:

during the first ignition-on cycle, operating the trailer brake output circuit according to a first-cycle trailer profile,

wherein the previously-used trailer profile comprises the first-cycle trailer profile.

8. The method of claim 7 , further comprising:

receiving a trailer configuration via the user interface during the first ignition-on cycle,

wherein operating the trailer brake output circuit according to the first-cycle trailer profile comprises operating the trailer brake output circuit based on the received trailer configuration.

9. The method of claim 8 , further comprising:

during the first ignition-on cycle, presenting a request via the user interface for a trailer configuration,

wherein the received trailer configuration is associated with the request.

10. The method of claim 9 , further comprising:

during the first ignition-on cycle, making a first-cycle determination that a trailer is coupled to the vehicle and that the trailer brake output circuit was not operated during an initial ignition-on cycle of the vehicle preceding the first ignition-on cycle,

wherein presenting the request for a trailer configuration comprises presenting the request in response to making the first-cycle determination.

11. The method of claim 10 ,

wherein making the determination that a trailer is coupled to the vehicle comprises making a determination that the trailer brake output circuit is electrically coupled to trailer brakes of a trailer via a 7-pin connection, and

wherein making the determination that the trailer brake output circuit was not operated during the initial ignition-on cycle comprises making a determination that the trailer brake output circuit was not electrically coupled to trailer brakes of a trailer via a 7-pin connection during the initial ignition-on cycle.

12. The method of claim 9 ,

wherein presenting the request for a trailer configuration comprises presenting respective identifiers for one or more trailer profiles stored in a data storage of the vehicle and presenting a request for a selection of a trailer profile from among the stored trailer profiles,

wherein receiving the trailer configuration comprises receiving a selection of a stored trailer profile from among the stored trailer profile, and

wherein operating the trailer brake output circuit based on the received trailer configuration comprises operating the trailer brake output circuit according to the stored trailer profile.

13. The method of claim 8 ,

wherein receiving the trailer configuration comprises:

receiving a new trailer profile that is not among one or more trailer profiles stored in a data storage of the vehicle; and

storing the new trailer profile in the data storage, and

wherein operating the trailer brake output circuit based on the received trailer configuration comprises operating the trailer brake output circuit according to the new trailer profile stored in the data storage.

14. A vehicle control system of a vehicle, the vehicle control system having a user interface and an electronic control unit (ECU), the ECU comprising:

a processor; and

a non-transitory computer-readable storage medium comprising instructions that, when executed by the processor, cause the ECU to:

operate a trailer brake output circuit during a first ignition-on cycle of the vehicle;

make a query-presentation determination during a second ignition-on cycle of the vehicle, the query-presentation determination comprising a determination that the trailer brake output circuit was operated during the first ignition-on cycle, wherein the first ignition-on cycle precedes the second ignition-on cycle;

in response to making the query-presentation determination, present a query via the user interface whether to operate the trailer brake output circuit according to a previously-used trailer profile according to which the trailer brake output circuit was operated during the first ignition-on cycle preceding the second ignition-on cycle;

receive, via the user interface, a reply associated with the query; and

in response to receiving the reply, operate the trailer brake output circuit based on the received reply.

15. The vehicle control system of claim 14 ,

wherein the reply comprises an instruction to operate the trailer brake output circuit according to the previously-used trailer profile, and

wherein the instructions that cause the ECU to operate the trailer brake output circuit based on the reply comprise instructions that cause the ECU to operate the trailer brake output circuit according to the previously-used trailer profile.

16. The vehicle control system of claim 14 ,

wherein the instructions that cause the ECU to make the query-presentation determination comprise instructions that cause the ECU to:

make a determination that the trailer brake output circuit is electrically coupled to trailer brakes of a trailer via a 7-pin connection; and

make a determination that the trailer brake output circuit was electrically coupled to trailer brakes of a trailer via a 7-pin connection during the first ignition-on cycle.

17. The vehicle control system of claim 14 ,

wherein the instructions further cause the ECU to present, during the first ignition-on cycle, a request via the user interface for a trailer configuration, and

wherein the received trailer configuration is associated with the request.

18. A method comprising:

during a first ignition-on cycle of a vehicle preceding a second ignition-on cycle of the vehicle, operating a trailer brake output circuit of the vehicle and setting a trailer-operation flag;

during the second ignition-on cycle of the vehicle:

making a second-ignition determination that the trailer-operation flag is set; and

in response to making the second-ignition determination, presenting a query via a user interface of the vehicle whether to operate the trailer brake output circuit according to a previously-used trailer profile according to which the trailer brake output circuit was operated during the first ignition-on cycle preceding the second ignition-on cycle; and

receiving a reply, associated with the query, via the user interface and responsively operating the trailer brake output circuit based on the reply.

19. The method of claim 18 ,

wherein making the second-ignition determination comprises making a determination that a trailer is coupled to the vehicle.

20. The method of claim 18 ,

wherein the reply comprises an instruction to operate the trailer brake output circuit according to the previously-used trailer profile, and

wherein operating the trailer brake output circuit based on the reply comprises operating the trailer brake output circuit according to the previously-used trailer profile.