Adaptive Cruise Control Retrofit

[daviesbike]

DEL You Sir are a legend !
Thank you very much for that... I will order it tomorrow.

Il check my readings today as my simptoms are very similar to manny..

If only you could help me with lane assist ...

Auto glass fit a new screen and now my lane assist has stopped working ... it says incorrect basic settings performed audi quoted £470 to re calibrate it ...

I must admit I miss it on jurneys especially with narkalepsy

[daviesbike]

I assume being a W12 to adjust mine it's a bumper off job ? :s

[Delboy]

To adjust the radar? No the cover plate gives access to the radar through the hole, horizontal adjustment screw is a **** to get too and you may need to make a tool to fit

[daviesbike]

Here is mine ...

Again works with transit vans and lorry ect but a tad vague with cars

[Delboy]

After the retrofit most of the driving had been round town but yesterday I went to Norwich to meet with Matt for breakfast so had a 60 mile round trip, the ACC performed well apart from the slight bias that was noticeable during sweeping bends.

So I was surprised to get readings like these.

I am reluctant to reset and think I will let it play out for a while yet and see what happens to it as we don't know know the criteria for setting the values.

Is it over a long period or the last moments of a drive cycle etc

[daviesbike]

I've no idea... I can't actually remember when I did the retro fit on my 4.2 how i self calibrated it.

I think I actually parked behind a car in a car park and used that to zero the basic settings and it was absolutely spot on...

But I'm guessing I must need to lower the radar on the W12 because it picks up larger vehicles but not cars..

And the 4.2 picked up motorcycles and all sorts

[mannyo]

This morning I added 1/2 a turn anticlockwise to the horizontal adjustment screw, and reset the basic settings. Having driven 150 miles since I now have different readings. I'll not post another screen shot, but the channel values recorded as follows:

Channel 2 first block -0.083 degrees
Channel 11 first block: -2.016 degrees

Observations when using ACC, it now at least seems to see cars in front but needs more adjustment I think.

From this I think we can deduce that channel 11 is horizontal alignment and channel 2 is vertical, and to get from negative figures to towards zero on the horizontal seems to need anticlockwise on the allen key.

[Delboy]

Ok guys I asked over on Ross-Tech forums about the measuring blocks for the radar and a helpful chap posted this link that shows what each reading is.

Sorry for the misleading info before.

[mannyo]

Interesting as that would mean mine was pretty close at the start and should have worked, but it quiet clearly is miles out.

I guess adjusting the horizontal is correcting the steering offset in block 11 position 1.

I know my wheel alignment is spot on, i've had it checked twice in the last 12 months on a hunter 4WA rig and its never required adjusting.

[Delboy]

Yeah it will be interesting to see how it changes, your middle lane check is a good way to do it.