Do not assume a damaged or loose panel is merely cosmetic. It may protect parts, preserve clearances or influence the intended operating arrangement.
Understanding this situation
A panel that rattles, exposes wiring or has been removed for inspection needs proper attention. Running without it to reduce a noise or improve cooling changes the appliance from its designed condition.
A useful next step
Keep the dryer unused until the correct assembly is restored and any underlying damage assessed. Do not tape over openings or fit an improvised cover. Explain when the panel damage occurred and any associated symptoms.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.