Adaptive Cruise Control Retrofit

[Delboy]

It does have the mounting holes, at least it did on mine, they are not the easiest to see but are there

[Architex_mA8tey]

Originally Posted by Delboy

It does have the mounting holes, at least it did on mine, they are not the easiest to see but are there

Hmm maybe they started fitting them as standard from a certain date then, I'm not sure all D3's would have them

[Delboy]

Originally Posted by Architex_mA8tey

Hmm maybe they started fitting them as standard from a certain date then, I'm not sure all D3's would have them

The Acc was available from 2003 on was it not, just had a quick look in ETKA its the same part number all the way from 2003-2007

[mcs]

Yes,

The pre-facelift cars retrofit is even easier than the later ones. You only need the small lower grill with the radar cover.

In most countries ACC was available from day 1 of production but it was a hefty extra-cost option.

I am keen to see what happens with the wiring Delboy, that is the only thing I am worried about with this retrofit. Where do the CAN wires attach and how.

Mike

[mattylondon]

Originally Posted by mcs

I am keen to see what happens with the wiring Delboy, that is the only thing I am worried about with this retrofit. Where do the CAN wires attach and how.

Hi Mike,

Hope you have had time to study Del's excellent write up regarding the ACC retrofit. The CAN connections and wiring for the ACC is relatively simple because it is its own CAN, known as CAN-E or Extended CAN, with only two network nodes - the radar and the gateway.

It has its own network because the radar broadcasts a lot of data at the highest importance level.

If the ACC nodes were on another CAN network this would result in lower priority data being delayed as only one CAN payload can be on the BUS (which would nearly always be the ACC data) Therefore a dedicated CAN for ACC is the best solution.

To simplify the CAN-E network even further, from ISO11898-2, the resistors are terminated in the CAN Controllers within each node.

So in reality this means only a simple twisted pair is needed between the radar and the gateway.

[Turbo Tony]

Thanks very much for taking the trouble of writing this thread Del.

A couple of silly questions, please:

1) Did the S8 instrument pack for ACC have the red LEDs around the speedo?

2) What's the lowest speed the ACC will operate down to?

3) How has the system been working for you?

[Delboy]

Hi Tony the Acc cluster does have the led's, it works like the one in this video

The system becomes available at 20mph and can operate up to 120mph

It will stay engaged a bit below 20mph but not sure how far and for how long.

Its been working fine, since I last tweaked it but its not really a system for in the town, and makes for a better experience on open road.