Thread: 2004 E53 X5 4.4i Rear Fog light Install...COMPLETE!
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Old 04-30-2010, 01:36 AM
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Which one did you buy? Was it p/n 61 31 6 930 244?

Quote:
Originally Posted by lemans4.8 View Post
the Trailer Tow Module is required (also known as TCM). I just did this DIY with purchasing just the TTM and everything works! I also ordered a different euro switch, as I have adaptive bi-xenons.
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