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DIY for changing the laser unit in a MK4 sat nav unit DIY for changing the laser unit in a MK4 sat nav unit
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  #1  
Old 02-02-2011, 12:04 PM
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glenz4 is on a distinguished road
Z4 replacement completed
Many thanks to everyone on the forum for previous posts and especially those that helped me directly. Some tips for others who are considering embarking on this job and have a BMW Z4.

1. The instructions here are invaluable as you'll need to remove the centre console entirely to get the DVD player out. This is the biggest part of the job, once you've got the DVD player out the process is relatively straight forward.
2. Before you start make sure you have time. It took me 1/2 day just to get the DVD player out.
3. BMW saw fit to secure the centre console with about 12 screws that are all different sizes. If you don't have a Torx screwdriver set (star shaped) then you may want to think again. I got most of the screws out without on but had to admit defeat for one set and go buy one.

Summary - it 'aint easy! But if you are DIY minded, have the time and balk at the idea of paying a dealer to do it good luck!
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  #2  
Old 02-05-2011, 09:58 PM
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I have a DVD M3 4.6 drive that reads CDs but not DVDs.

I ordered 65 83 9 241 764 from from bavauto.com for $112 but they sent me a DVD M3 3.5 drive which I think is 65839237706

The 3.5 drive seems to be working in my MKIV. But it won't eject the DVD.

Is it possible to get the M3 4.6 drive?
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Last edited by shamshir; 02-05-2011 at 10:20 PM.
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  #3  
Old 02-09-2011, 11:38 AM
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Nice DIY, im having a bash at this as we speak. I noticed that the heatsink pad on the processor seems to be a load of shite, so im going to add my own heatsink paste before putting the shielding back on.

Anyone else noticed this?
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  #4  
Old 05-13-2011, 08:59 AM
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Quote:
Originally Posted by R2D2 View Post
Nice DIY, im having a bash at this as we speak. I noticed that the heatsink pad on the processor seems to be a load of shite, so im going to add my own heatsink paste before putting the shielding back on.

Anyone else noticed this?
Seems perfectly logical to replace faulty thermal paste.

Note: don't lather it on thick, it's not butter on crumpets .

You need enough of a coating to fill the microscopic recesses in the faces you are pressing together. That's what our Mechanical dept. thermal expert says anyway.
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  #5  
Old 05-15-2011, 04:48 AM
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Smile It worked perfect, Thanks Didi!
Its perfect. Thank you very much Didi. It worked like charm.

I ordered laser unit from
Product Details: SFHD4/BLACK CAP AUDIO SPARE LASER PICKUP FOR DVD M3 4.6 LASER

for £32 and bought a soldering iron for £15. Borrowed trox screw drivers from a friend, all it cost me was under £50.

Good pictures and explanation it really helped me.
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  #6  
Old 05-15-2011, 09:18 AM
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Quote:
Originally Posted by Kisu_san View Post
Its perfect. Thank you very much Didi. It worked like charm.
....
Good pictures and explanation it really helped me.
Your welcome.
You're from switzerland? Propably it would have been easier for you to read my DIY in German:
Tausch der Lasereinheit beim BMW MK4-Navigationsrechner - BMW-Treff Forum
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  #7  
Old 05-11-2011, 05:34 PM
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Question about DVD Unit Replacement
Great DIY w/Pics. I'm going to go the DVD unit route. The part number is #65839241764 thru Husker BMW. I'm replacing an the unit in my MKIV 03 325xi. May be a stupid question, but will I have to reinstall my software, i.e. v32? Do you know if this unit will read back up map copies?

Thanks,

J
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  #8  
Old 05-11-2011, 05:41 PM
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Quote:
Originally Posted by ja367 View Post
Great DIY w/Pics. I'm going to go the DVD unit route. The part number is #65839241764 thru Husker BMW. I'm replacing an the unit in my MKIV 03 325xi. May be a stupid question, but will I have to reinstall my software, i.e. v32? Do you know if this unit will read back up map copies?

Thanks,

J
No you wont have to reinstall any software, just power the unit back up when youve reinstalled the hardware and you will see the nav option in the menu screen once again.
Backup copies are very temperemental in my experience. I replaced the laser in my unit hoping that my intermittent copied disc would be flawlessly readable, but its still a bit sketchy. If youre going to run a copied disc you must burn the iso at 1x speed as far as i know, or it probably wont work.
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  #9  
Old 05-13-2011, 08:41 AM
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Quote:
Originally Posted by R2D2 View Post
No you wont have to reinstall any software, just power the unit back up when youve reinstalled the hardware and you will see the nav option in the menu screen once again.
Backup copies are very temperemental in my experience. I replaced the laser in my unit hoping that my intermittent copied disc would be flawlessly readable, but its still a bit sketchy. If youre going to run a copied disc you must burn the iso at 1x speed as far as i know, or it probably wont work.
confirmed!
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  #10  
Old 06-01-2011, 02:45 PM
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Another Quick Question Re: DVD Drive Replacement
I posted earlier, but I have a question or two. I have an 03 BMW 325xi with the MKIV unit. I'm going to replace the drive following the instructions at the beginning of the this post. My questions are:
- I assume the Drive comes with the laser?
- Besides having a functioning drive are there any upgrades with a new drive, i.e. more functions as my unit currently doesn't have any HVAC settings in the NAV display?
- Is there anything else I can easily upgrade and/or replace while replacing the Drive?
- I'm planning on installing a DICE Mediabridge, DUO and/or a Sirius receiver. Will a new DVD drive enable iPod and.or Sirius text on the nav screen or is that a something that can be accomplished another way or the text will automatically display. My concern is I've read about either MKIV or CD players needing to be ID3 or MP3 compatible (sorry for the wrong acronyms).

Thanks,

J
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