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I have a fault code 2ef4

Tiny
SK525XI
  • MEMBER
  • 2006 BMW 525XI
  • 10,000 MILES
My service engine light on my 2006 525xi popped up on the dashboard. I brought my car to the BMW dealer service dept. They told me my thermostat and housing needed to be replaced. I am not real confident in them so I brought my car to a BMW certified garage. They told me that I had a fault code 2ef4, and that a technical service bulletin states that the radiator needs to be replaced and that the software needs to be upgraded. They don't know why the dealer told me that the thermostat and housing needed to be replaced. Not sure what to do.
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Monday, November 28th, 2011 AT 5:35 PM

1 Reply

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
2EF4 faulty thermostat the correct way is to have the thermostat and housing replaced. Here is a guide to help walk you through the repair.

https://www.2carpros.com/articles/replace-thermostat

Please let us know if you need anything else to get the problem fixed.

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Monday, November 28th, 2011 AT 6:07 PM

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