Of course, I understand your question. Replacing a control unit like the one you mentioned, 61357412610 for your BMW's power tailgate, may be necessary for several reasons.

Here are some of the most common reasons:

• Faults or malfunctions: The control unit, being the "brain" that controls the operation of the tailgate, can fail due to voltage fluctuations, wear over time or simply due to a manufacturing defect.
• Software Updates: In some cases, automakers release software updates for control units to improve performance or fix known issues.
• Compatibility with new accessories: If you have installed new accessories that interact with the power liftgate (such as advanced keyless entry systems), a newer control unit may be required to ensure compatibility.
• Water or Corrosion Damage: Exposure to moisture or corrosive substances can damage the internal circuitry of the control unit.
• Accidents: An impact or accident may have damaged the control unit or its electrical connections.

What are the symptoms that indicate a possible fault in the control unit?

• Tailgate that won't open or close: This is the most obvious symptom.
• Intermittent Operation: The liftgate may work sometimes and not at other times.
• Strange noises during operation: Clicking, creaking, or other unusual noises could indicate a problem.
• Fault Codes: The ECU may store fault codes that can be read with a diagnostic tool.

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