Audi wallbox enclosure vibrates or rattles when the contactor closes or during charging.

Safety first: Turn off power before tightening any mounting hardware or opening the unit.

• Check wall mounting: Ensure all mounting screws are tight and that appropriate anchors are used for the wall material. Tighten as needed.
• Inspect internal components: With power off, verify that the contactor, terminal blocks, and PCBs are firmly screwed down and not touching the housing.
• Secure cables: Use cable ties or clamps to prevent heavy cables from pulling on the housing or vibrating against it.
• Add damping if needed: In some cases, adding rubber washers between the charger and wall (if allowed by Audi) can reduce resonance.

Persistent rattling may indicate a failing contactor; inspect and replace if necessary.