Replacing The Mk-3 Navigation Computer
When replacing the Mk-3 navigation computer be aware that there are two hardware variants depending on the installation position (vertical or horizontal).
The ignition should be in position 0 during removal and replacement of the computer. After installing, close all doors, hood and trunk. A bus line reset will be carried out within two minutes. Resetting allows the gyro to perform a calibration run. Do not move the car during this reset period.
The coding sequence for the Mk-3 navigation computer has been changed from the previous Mk-2. There is now an additional step (configuration) that must be done before the software can be loaded.
After resetting, a configuration signal is needed to allow the computer to load the correct software for use with a board monitor or MIR. This is performed using the DIS coding program (CD 22.0 onward) and the Navigation System operating software (CD V15.0 onward).
- From the DIS/MoDiC Coding /Programming select "1 ZCS Coding"
- Select the appropriate series (E46,E39,E38,E52,E53)
- Select "4 Conversion"
- Select "3 IKE?Kombi"
- Select "2 language"
- At the prompt "is the CD ROM present?" select yes, but do not install the operating software CD ROM yet.
- First select the main language and then an additional language. (i.e. English-spanish)
- Select the gender of the navigation audio voice.
- Select "automatic coding-yes"
- After coding is done the DIS/MoDiC instructs you to follow the instructions on the monitor for the installation of the Navigation System CD ROM.
- Place the navigation system software in the navigation computer CD drive. IMPORTANT: Do not switch the ignition off during the software loading procedure. Do not use any software for the Mk-3 earlier than CD V15.0.
- Once loading has been completed, remove the CD and then confirm completion by pressing the rotary push-button on the monitor.
- Turn off the key for 10 seconds, then turn it back on and conduct a functional check.
- After this step has been finished, encode the navigation computer using the "Recoding" path in ZCS Coding. The coding process involves coding vehicle specific data: VIN, Model, Telematics data etc.
The software status can be confirmed from the "Set" screen for Mk-3 systems.
- 3 = Third generation system Mk-3.
- 1 = Device variant (1=Color screen, 2= MIR monochrome screen).
- 20 = Software version of the graphic component (Version 2.0).
After the navigation computer has been successfully programmed and coded the vehicle should be left in an area with a clear view of the sky with the key in KL R for at least 15 minutes to complete the calibration process.