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How to Replace the Key Fob Battery on the Ford Flex?

Model: Ford Flex MK 1 - Years: 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Key

Video tutorial

In this tutorial, we will see how to replace the key fob battery on the Ford Flex. For this simple and quick operation, you will not need any special tools, just a replacement CR2032 battery. First, extract the emergency key using the designated button on the back.

Then, use the key itself to pry open the cover. Once fully opened, remove the old battery and insert the new one, making sure to position it with the negative side facing you. Finally, reassemble everything by following the reverse procedure.


Updated on 22 June 2026 by ScegliAuto


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In the Opel Zafira, it may happen that the radio locks and consequently requests the appropriate security code, especially after disconnecting or replacing the battery. The code can be found in the documents provided at purchase or through one of the various online recovery services. Once obtained, enter it by following the procedure shown in this tutorial. First, switch on the instrument panel, then press and hold both the "AS" button and the left knob for about 5 seconds. Next, enter the first digit by repeatedly pressing the "1" button, continue with the next 3 buttons, and save the setting by pressing the "AS" button again.

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by ScegliAuto

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