E88 Replace MULF with ski bag option

[danielberman]

Hey everyone,

Pretty sure the MULF unit on my 2010 135i has gone bad so I need to order a replacement. Tried to get at the unit yesterday to see whether I need to order a MULF, MULF 2, or MULF 2 high basis but the ski bag wall/frame obscured half of the unit. I've attached some photos. How would I go about accessing my mulf unit? Does anyone know how to remove this divider?

Also, is there any way of knowing which MULF unit I have by the vin?

View post on imgur.com

[..Rush..]

At first glance of your above thread topic, I thought you had misspelled the word "MULF"

Hehe!

[twinturbovan]

I can ask my BMW Tech tomorrow for you after I get off work. I had to replace the complete module over the battery because it was casuing crazy amount of issues on my car so they are familiar with these pieces.

[Tuxedo]

I might have an extra one

I think you remove the bracket and assemble from the under side with the comm control unit

[danielberman]

Originally Posted by twinturbovan

I can ask my BMW Tech tomorrow for you after I get off work. I had to replace the complete module over the battery because it was casuing crazy amount of issues on my car so they are familiar with these pieces.

That would be great! Let me know what he says

[danielberman]

Originally Posted by twinturbovan

I can ask my BMW Tech tomorrow for you after I get off work. I had to replace the complete module over the battery because it was casuing crazy amount of issues on my car so they are familiar with these pieces.

Did you hear back from your BMW tech?

[twinturbovan]

Originally Posted by danielberman

Did you hear back from your BMW tech?

Hey sorry for the late reply. The notification didnt show up til right now. Ill be sure to ask him tomorrow bc i have to get my car towed to the shop tomorrow.

[danielberman]

Originally Posted by twinturbovan

Hey sorry for the late reply. The notification didnt show up til right now. Ill be sure to ask him tomorrow bc i have to get my car towed to the shop tomorrow.

No worries. My Indy shop actually checked it out, you’ve gotta remove the rear seats. Now I’m wondering if there’s a way to just bypass MULF? Because the speakers still work and all

[barritt]

You don't need to remove the rear seats. Take out the two 10mm nuts, lift up the cradle on the left where the bolts are to get clearance and then slide it out to the left.

[danielberman]

Originally Posted by barritt

You don't need to remove the rear seats. Take out the two 10mm nuts, lift up the cradle on the left where the bolts are to get clearance and then slide it out to the left.

You can’t get to the back 10mm bolt, a wrench won’t fit in between the gap that’s between the bolt and the ski bag partition. Unless you’re referring to something else?

[rhodesman]

I don't remember the EXACT way to get to it all, BUT if you remove the four plastic pins (two on either side of the ski bag), open the ski bag compartment (not 100% sure this is needed, like I said, been a hot minute since I did this) you will loosen the rear panel enough for you to move it out of the way enough to get that last 10mm bolt.

I hope that helps.

Also: if you need a replacement MULF, I'll sell you mine for a fraction of the cost of a new one because it's just sitting on a shelf in my garage collecting dust as I converted mine to the COMBOX which doesn't need the MULF anymore.

[danielberman]

Originally Posted by rhodesman

I don't remember the EXACT way to get to it all, BUT if you remove the four plastic pins (two on either side of the ski bag), open the ski bag compartment (not 100% sure this is needed, like I said, been a hot minute since I did this) you will loosen the rear panel enough for you to move it out of the way enough to get that last 10mm bolt.

I hope that helps.

Also: if you need a replacement MULF, I'll sell you mine for a fraction of the cost of a new one because it's just sitting on a shelf in my garage collecting dust as I converted mine to the COMBOX which doesn't need the MULF anymore.

Thanks! I'll PM you

[barritt]

Sorry, didn't log in and see this was replied to. I used a combination wrench with a ratcheting box end for the one closest to the seats.

Literally just did this during a combox upgrade a few weeks ago on my E88 with with the ski bag option.

Unless you're talking about some other bolt. The one closest to the seats holding the cradle is the bolt in your last picture that has a nut on it. Those are the only two holding the cradle in.

If you haven't done it yet I can see if I can get a picture/video explaining it.

[danielberman]

Originally Posted by barritt

Sorry, didn't log in and see this was replied to. I used a combination wrench with a ratcheting box end for the one closest to the seats.

Literally just did this during a combox upgrade a few weeks ago on my E88 with with the ski bag option.

Unless you're talking about some other bolt. The one closest to the seats holding the cradle is the bolt in your last picture that has a nut on it. Those are the only two holding the cradle in.

If you haven't done it yet I can see if I can get a picture/video explaining it.

Where did you get your Combox?