BMW MKIV navigation computers now available from Bimmernav.com
To install an MKIV computer in the 5 series, you have
slightly more work to do. The below images are courtesy of
----ALWAYS DISCONNECT BATTERY when removing parts from
Warning, make sure that you do not disconnect the battery
if the light is still ON the navigation computer. Iit is a
good procedure to follow on all BMW nav computers.
Remove the access panel
Home made computer removal tools from coat hangers.
Insert the tools in the computer and remove the old style
Remove Navigation computer
----NOTE The antennas are in the picture above FIT the
navigation computer but are WRONG. The navigation comptuer
needs the antenna from the GPS module behind some of the
brackets. This antenna goes between the bottom of the CD
changer and the top of the black DSP amp on the sidewall.
Notice how this cable goes to the DSP AMP. It is a digital
audio link from your CD player and not the GPS antenna
To get access to the GPS RF connector you will need to
remove the changer. To remove CD changer, loosen the two
screws on the right side, pull right side free 1/2 inch and
then lift right side slightly and tilt to the midline of the
Remove the Left CD Changer bracket
Remove the Navigation computer bracket
Remove the Right CD Changer bracket
Remove the Vertical bracket
Remove the DSP Amp. To get room to remove the amp the
silver Alpine unit needs to be moved to gain clearance. At
this point the Alpine can be lifted free of two drop in
brackets and pulled towards the inside of the car. This gives
room to pivot the amp counter clockwise with some maneuvering
to clear the attached brackets. This reveals the Trimble unit,
the antenna lead and data/power leads into it.
all components removed and antenna lead shown hanging down the
THIS IS THE GPS MODULE. You need to remove the RF cable
from this module and plug it in the back of your new MKIV
navigation computer. You can then just tape off the power
connector and leave it to dangle in the rear of your car.
Installation is reverse. You will no longer need the
Trimble GPS module as a GPS module is built right into the
MKIV navigation computer.
******IMPORTANT. If you are installing a NEW MKIV,
once you install the hardware you will need to upgrade your
software. After installation the navigation computer will
prompt you to insert the software CDROM.
See link for download and installation details
If you purchased
an MKIV from Bimmernav, the latest version of the BMW software WILL BE PREINSTALLED AND YOUR UNIT WILL NOT NEED ADDITIONAL CODING .
Purchase BMW MKIV with Latest Version Firmware Preinstalled