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Originally Posted by Shane_Smith
I have ordered my X3 2 weeks ago and have a very long wait as I live in Queensland Australia. So while I have been waiting I have been reading many a forum and decided I would Retro Fit the Sat Nav instead of getting it factory fitted this is a huge cost saving. However while I was at the Brisbane car show today I asked the sales rep at the BMW stand what the cost would be for me to get them to Retro Fit Sat Nav. He advised that it would cost $18,000 AUD. He claimed I would have to replace the whole dash as it doesnt slip straight in like the X5. My Question is:
Has anyone retro fitted a 2007 X3 or even a late 2006 X3 and if so was it a major operation or somewhat easy? It would be great if someone from Australia has done it and if I could contact you to ask questions if I get stuck that would be great.
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Yes I have - see attached pictures.
BMW sell a retrofit kit for the X3 and you can ask any dealer to download the installation instructions from their customer service portal tool.
The installation into the X3 is simpler than for the X5 - the harness is designed the be extended to include the Nav harness.
As for dash - this is the easiest part of the job ! Two screws to remove the flip-top storage compartment after radio, a/c control and air vent have been removed. Add a couple of speed nuts and simply drop in the flip up screen - this can be done in an hour or two.
Wiring takes a little longer since you have to tap into the speed line behind the instrument pod and reverse connector above the fuse box. A copy of TIS is needed here to help with glove box removal and to get behind the fuse box.
Routing the harness to the rear involves removing a few snap-in trim panels and carefully routing the cables along the left hand side of the car under driver's door trim, A, B and C pillers, behind rear seat to trunk.
Fit the nav computer bracket in the trunck using speed nuts and bolts.
Stick the GPS aerial under and behind the instrument pod and route cable to trunk with main harness.
Connect it up, to a new / secondhard CID radio, turn it on, drive around for 20 miniutes or so for Mk4 to calibrate and voilla - job done !
Next use navtweak, navcoder etc to upgrade to V28, customise to suit and tell the Mk4 it's in an X3.
Whole lot easily done in a weekend with normal tools.