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To change the water temperature sending unit on a 1993 BMW 525i, first, ensure the engine is cool and disconnect the negative battery terminal. Locate the sending unit, which is typically found near the thermostat housing, and carefully remove the electrical connector. Use a socket to unscrew the old sending unit, then install the new one by threading it in and reconnecting the electrical connector. Finally, reconnect the battery terminal and check for any leaks or issues before starting the engine.

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2w ago

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