PASSAT B8 SW SIDE/LANE CHANGE ASSIST RETROFIT

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sam1754

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Hello, I'm enjoying lane assist retrofit and I'm willing to retrofit Side assist in addition.
I'm asking where to plug the thing above J533 on the picture below:

 
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Those go the radars behind rear bumper. J769 and J770

That is the ready made wiring set from Aliexpress. T27g and T27d go to door connector on the car frame side. The big blocks connected with red drawing on the picture. That is a connector block on the wire itself.

And for this, the easiest point to attach to ignition live and can bus extended high and low are on the connection point in driver footwell, just below A pillar.
 
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If I understand, this plug above J533 Can Gateway pins is here to avoid multi soldering on T7/T17 which are already used for ACC and lane assist. I'm talking about the plug just at the right of "CANBUS" writted on diagram.
Am I right?
I think there's a mistake on the diagram. J533 has a T20 connector, not a T27...?
 
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Sorry, I didn't read your answer. But I noticed it was a male/female plug just to allow parts dismantling.
As I understand, you say it's not necessary to run through the Can Gateway? There's a coupling point at the bottom of A pillar???
 
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Yes exactly. That plug is quite often on these chinese wiring sets. They allow easy tapping on to existing wiring without having to solder.

And yes, use A pillar connection point. That is really easy and you anyway need to remove some of the panels to gain access to the door connector.
 
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Yes, I do really not want to roll under the dash board again :thumbs:!
And removing trims doesn't afraid me:o
 
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:thumbs: I know you’re not afraid to do it again :)

Only thing I hate when removing & re-installing trim parts is that you always introduce a rattle or two after putting everything together.
 
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VW dealer gave me rattles for free after every intervention, so I choosed to remove all trims and you can how they broke it:



I have heated all trims to turn it in the original shape, insulated all the car, put clothed tape on every contact surface to avoid any noise and put all back in place. Really zero noise:o
If you don't dismantle parts in the correct sequence order, you won't be able to put it back correctly. I.e, to remove C pillar, you have to dismantle all from the trunk threshold. You always can do it partially but as you said, with rattle noise.

 
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But this calibration is not for side assist. The same board is used but only for positioning the doppler device. The radars are calibrated by generating doppler signal that interferes the radars reading area.

Side assist is maybe the most difficult one to self calibrate but same time the one giving most satisfaction when it succeeds :)
 
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This is good https://www.drive2.ru/l/10151918/

There you’ll see what is needed. Those cylindrical fans cost around 30€ in Ebay.

Here’s the guide I used. It gives you close enough distances http://www.vwgolf.org/calibrating_blind_spot_monitor_control_unit_j1086_j1087_-2606.html

I didn’t even have the camera calibration board. I just made a board with correct width using a floorboard. Then measured the distance from the board front taking into account the camera board depth. I got close enough distance to place the fan and was able to complete the calibration.
 
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Yes, I see but there is height for target but what is inside plastic housing???
Which metal fan is needed? axial or radial???
Many thanks downtime :o
 
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The Russian page explains. Just use google translator.

OEM plastic box has that type axial fan inside. Basically anything you can adjust speed, reflect signal and create a doppler wave to disturb the radar detection area, is ok.
 
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https://www.drive2.com/l/10127701/

Ok, I didn't read this page.
All I need is just control signal quality (must be not under 80%) in group 20, second and fourth window. I'll try to make a DIY doppler emulator with just a motor and a holey metal disc.
And calibration process in VCDS is as simple as A5 calibration.
:p
I'll do it as quick as I can and hope I'll not turn crazy like with lane assist.
 
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No no, with the SWA3.0 modules that go to your Passat as well, don’t need the power level to be over 80%. Only angle needs to be +-4 degrees. Those modules have dynamic calibration as well and that will handle the power calibration in traffic.
 
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I saw on Aliexpress a dealer who sells already calibrated control units... I asked him to explain it to me and I wait for his answer... is it possible???
 
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Yes. If it is calibrated to Passat. Mine also said calibrated but no, they were brand new units without dataset and calibration.
 
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Hummmm...
The seller replied to me: "I do not have the one which needs to parameter.":mad:
So, I need VAS to implement firmware in the control module, right?
I don't want to start this retrofit until I have all figured out... not like with lane assist retrofit:p

As VCDS can't do it, to implement data, I need this [URL redacted], right?
But this should only allow me to change data set. I also need to find passat B8 sw data set...but wher can I find it?
 
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Yes, ODIS if you need to update or downgrade the firmware and VCP to load dataset. VCP has their own filemanagement which is accessible when you buy the tool. The datasets are not freely distributed in the net.
 
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