Installation of the MKIV Navigation computer is simple in the 7 series and X5. The 5 series upgrade from MKII requires a little more work, but can be done in about 1/2 hour. BMW 5 series MKIV upgrade
First step is to remove the Cover for the rear compartment.
First step is to remove the two plastic screws on the right and the Navigation computer
Their is a special BMW tool that must be used to remove the Navigation computer. I made mine out of a coat hanger cut in four pieces
The idea with the tool or the coat hanger is to push in just far enough to unlock the spring loaded catch
***Warning Do NOT DISCONNECT your BATTERY or PULL the FUSE on an with the Key on or until 90 seconds after your key has been turned off. Always let your Navigation computer spin down completely allowing the red led to turn off see TIS Supplement on MKIII Computers Although this warning is for MKIII systems it is a good pratice to follow.
Close up of what you are doing with the coat hanger. You only need to push in far enough to unlock the catch.
If you are upgrading from an MKII Navigation computer, reach in the access door to the left of the CD Changer and gently pull up on the antenna cable connector attached to the GPS module as shown in the photo above. Remove this cable, route it thru the back of the Navigation computer frame and connect to the back of your MKIV computer. You can disconnect the power connector to the separate GPS module as it will no longer be needed. The MKIV computer has a GPS module built in
Installation is reverse.
Bimmernav now ships our navigation computers PRECODED with the latest Firmware so that you do not need to do the final step of software coding during installation. When you order from Bimmernav we will ask the BMW or Range Rover module and year of your car and code the navigation system appropriately. The MKIV navigation system is coded with US English, GB English and Spanish, however if you prefer any other BMW supported languages, please indicate your preference when ordering. The following steps are for reference and only used if you are not purchasing a PRECODED MKIV navigation unit from Bimmernav: Once complete, turn on your ignition to run, and if instructed, insert your Navigation Computer Software disk and follow the onscreen instructions. Do Not Power off vehicle, or even close a door. You could cause irrecoverable damage to the 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 .