A refrigerator develops a new recurring noise

Describe the sound in simple terms: a brief click, steady hum, rattle, scrape or repeated start-and-stop sequence. Note how often it occurs and whether it coincides with ice dispensing, a door opening or a cooling change. A short recording taken from outside the appliance can convey more than a guessed component name.

Check only accessible items that might be touching each other, such as bottles or containers, without removing covers. Keep the refrigerator in its installed position. A sound heard through cabinetry may be difficult to locate, so report where it seems strongest rather than declaring that it is definitely a compressor or fan.

Record whether cooling remains normal and whether a warning appears. A noise accompanied by rising temperature or softened frozen food calls for prompt attention to both the appliance and food storage. Do not repeatedly unplug the refrigerator or force a door switch to make a noise start. The model manual and an inspection provide the context needed to assess normal versus abnormal operation.

Useful observations before you call

• Save a short normal-use recording and note the time and duration.
• Report actual compartment temperatures if available, separately from the settings.
• Identify recent moves, cabinet work, cleaning or changes in the ice-maker use.

Model-specific reference: Thermador owner manuals. Features and procedures vary; follow your appliance manual.