PARKING_BRAKE_SET event has no effect on GroundVehicles

[MSFS 2024] Bug Reports SimConnect
1

Version: 1.2.7.0

Frequency: Consistently

Severity: High

Context: Calling SimConnect_TransmitClientEvent() function from both external EXE and a WASM module.

Similar MSFS 2020 issue: Exactly the same problem is present in FS2020 too.

Bug description: PARKING_BRAKE_SET event has no effect on GroundVehicle category SimObjects.

Repro steps:
This sample code tries to set brakes on both user airplane and a vehicle SimObject:

enum EVENT_ID {
  EVENT_SET_BRAKES,
};

DWORD vehicle_simobject_id = 123; // Alter as needed
DWORD brakes = 1;

SimConnect_MapClientEventToSimEvent(simconnect, EVENT_SET_BRAKES, "PARKING_BRAKE_SET");

// Set brakes on user
SimConnect_TransmitClientEvent(simconnect, SIMCONNECT_OBJECT_ID_USER, EVENT_SET_BRAKES, brakes, 0, 0);

// Set brakes on vehicle
SimConnect_TransmitClientEvent(simconnect, vehicle_simobject_id, EVENT_SET_BRAKES, brakes, 0, 0);

Expected results:

  1. Brakes set on user airplane.
  2. Brakes set on the vehicle.

Actual results:

  1. Brakes set on user airplane.
  2. Brakes NOT set on the vehicle.

Parking brakes are implemented for both categories of objects and work correctly when toggled with PARKING_BRAKES event, but trying to set them to a specific value with PARKING_BRAKE_SET has no effect.

2

can confirm this issue. Our workaround is currently to set the SIM_DISBALED falg to true for the inactive vehicles to avoid them rolling around the airport.

1 Like