Project is done including coding. Works Great.
I will update this thread as I embark on the this project. I have accumulated all of the necessary parts. It's just a matter of execution. I will be be taking the poor man's approach by drilling my existing bumper cover.
My list of parts required. (This is for my 3/2011 Production) Other years may require a different PDC ECU.
Description / Part Number [QTY]
- PDC - Sensors Space Gray / 66 21 6 988 965 
- PDC - ECU for Front & Rear / 66 20 9 252 638 
- PDC - Front Retrofit Kit / 66 20 0 418 637 
- Front Panel Switch Kit / 61 31 9 120 026 
- Optional - 18mm step drill bit (If drilling your existing bumper)
After the install the system will need to be coded
The park distance control is activated automatically by engaging reverse gear. Activation
takes place with a delay of about 1 second. This delay prevents unintentional activation of
the park distance control when passing through the R-position when changing the drive
On vehicles equipped with a central information display, it is possible to select whether
the distance to the obstacle is to be indicated visually.
The front and rear park distance control remains active after disengaging reverse gear.
Automatic deactivation of the park distance control is initiated under following conditions:
• Vehicle speed greater than 12 mph/20 kmh
• Distance greater than 50 m
The park distance control can be switched on
or off by pressing the PDC button (2).
Illumination of the function indicator (1) in the
PDC button indicates that the park distance
control and therefore the distance recognition
function is active.
Manual activation of the function is possible
only up to a road speed of about
12 mph / 20 kmh.
The Stage is set