As others mentioned confirm power before ordering the new one. It's a giant fuse not likely blown but best to test. Pull the connector and measure for battery voltage on the fat wires. If you have a high end DMM like I do you can measure the frequency and duty cycle on the small wire/s and confirm the signal is being sent to spin the fan when you send the run commend

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)