Train Simulators
5 min read
How do I swap a locomotive in Train Simulator Classic?
Swap locomotives in Train Simulator Classic without breaking the player service, timetable or DLC dependencies, with editor steps and fixes.
To swap locomotives in a Train Simulator Classic scenario, clone the scenario, open the copy in the Scenario Editor, enable the replacement locomotive’s asset provider, place it beside the player consist, transfer the existing driver icon to it, then remove the old engine. Save, reload and test the complete scenario.
How do I replace the player locomotive in the Scenario Editor?
The safest method is to clone the scenario and move its existing driver icon, because that icon carries the player service and its instructions.
- Clone the scenario. Open
Build, select the route and scenario, then create a clone with a distinctive name. Do not alter the supplied original: a mistake can break it, and installed-content repairs may restore the original files. Our scenario-building and editing walkthrough explains the wider editor workflow. - Confirm that the replacement stock is installed. A locomotive cannot be selected merely because a scenario references it. If it came from a downloaded package, complete the normal Train Simulator Classic add-on installation process before opening the editor.
- Open the cloned scenario for editing. Locate the player train, but leave the original locomotive in place for now.
- Enable the required assets. Open the
Object Set Filterand tick the provider and product containing the new locomotive. Enable only the packages needed; selecting every provider makes the editor slower and adds unnecessary dependencies. - Place the replacement nearby. Add it to the same track, orientated in the correct direction. Steam locomotives may require their matching tender, while multiple units and scripted locomotives may need a complete formation rather than one substituted vehicle.
- Transfer the driver icon. Select and drag the existing player driver icon from the old locomotive onto the replacement. Do this before deleting anything. Creating a fresh driver instead can discard the service name, destination list and timetable instructions.
- Remove the old locomotive and couple the new one. Check that only the intended vehicle is selected before using
Delete. Move the replacement into position and confirm that the whole train forms one consist. - Save and test outside the editor. Reload the scenario normally, check the cab starts correctly, then run enough of the service to verify signals, stops, timings and the final objective.
The same method works for an AI service: move its existing driver icon rather than creating a new service. Retest the full scenario because a locomotive with different acceleration, braking or length can disrupt AI paths and timings.
Which replacement locomotive should I choose?
Choose stock that suits both the route and the vehicles it must haul; visual similarity alone does not guarantee a working substitution.
| Check | Why it matters |
|---|---|
| Traction supply | An electric locomotive needs compatible route electrification and, where its scripts enforce it, the correct collection system or supply type. Diesel and steam avoid that dependency. |
| Couplers and brakes | Incompatible couplings may prevent one consist forming, while mismatched brake systems can leave the train unbraked or impossible to release. |
| Required formation | Some steam engines need a particular tender; multiple units and advanced scripted stock may expect paired coaches or control vehicles. |
| Train length and weight | A longer engine or formation can foul points, signals, portals and platform stopping positions. |
| Performance | Lower power or different braking can make a tightly timed scenario impossible. A faster replacement can also reach pathing conflicts earlier than intended. |
Can I swap locomotives without editing the scenario?
Only Free Roam and Quick Drive offer practical alternatives; Standard and Career scenarios normally have a fixed player service.
| Scenario type | Available option |
|---|---|
| Standard | Clone and edit the scenario to replace its assigned player locomotive. |
| Career | Edit a cloned copy and treat it as a custom scenario. Career scoring, rankings or achievements may no longer apply as they did to the supplied version. |
| Free Roam | You can take control of another drivable consist already placed in the scenario. Changing the stock available at the start still requires the editor. |
| Quick Drive | Select another compatible locomotive or consist before loading instead of modifying a conventional scenario. |
Why does the swapped locomotive not work?
Most failed swaps come from a lost driver assignment, an unavailable asset package or an incompatible formation rather than a damaged locomotive model.
- The locomotive is missing from the browser: verify that its DLC or add-on is installed, then enable the correct provider and product in the
Object Set Filter. Restart Train Simulator Classic if the stock was installed while the editor was open. - The service or timetable has disappeared: the old locomotive was probably deleted with its driver icon still attached. Reopen the untouched clone and transfer the icon before removing the stock.
- The train will not couple: check orientation, coupling compatibility and whether a tender or intermediate vehicle belongs with the replacement.
- The locomotive couples but will not move: confirm that the driver icon is on the new engine and that every vehicle belongs to one consist. Then check the master key, reverser, brake controls, pantograph or other stock-specific start-up requirements; our driving controls and start-up guidance covers the basic sequence.
- There is no electrical power: the route may lack the electrification type required by that locomotive, or the stock may use a script that restricts operation to a particular supply system.
- The scenario starts but later fails: inspect every instruction in the timetable and run the service to completion. Different acceleration, braking distance or train length can cause missed timings, blocked paths and incorrect platform stops.