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I'm making progress.....I think. I posted my scan below. Important correction to the information above: Since it's the slave module it's the driver side in question.
With this in mind that it's the driver side that is deviating 7.5 degrees from the initial calibration this actually could make sense (maybe); because about a year ago my wife backed into something that barely did any damage to the bumper but since then I noticed a slight gap between the bumper and the rear panel indicating in fact that it is probably hanging just slightly on that side. Not enough to notice when you look at the car but in fact 7.5 degrees isn't that much, and there would be some deviation there anyway, so this may have pushed it over the threshold........ so this is my current hypothesis. Only outstanding question is why it worked just fine for the last year... but possible answer to that is maybe after the "accident" it was close to the deviation threshold and is now over it as time as passed and the bumper has possibly sagged another degree or two.
So, I'm not in a rush but I will get the bumper fixed if it's as easy as just getting a new bracket or something not completely insane and will report back.
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Address 3C: Lane Change (J769) Labels:| 5Q0-907-566.clb
Part No SW: 8T0 907 566 B HW: 8T0 907 566 B
Component: SWA Master H05 0071
Serial number: 0324964919
Coding: 010211
Shop #: WSC 06334 000 00000
ASAM Dataset: EV_LaneChangAssis 001020
ROD: EV_LaneChangAssis_AU21.rod
VCID: 3FDB47F327F37B13B69-806A
Lane change assistance control module 2:
Subsystem 1 - Part No SW: 8T0 907 568 B HW: 8T0 907 568 B
Component: SWA Slave H05 0071
Serial number: 0324627364
Coding: 010211
1 Fault Found:
730117 - Control Module 2 for Lane-Change Assist
C1115 F0 [008] - Automatic Calibration Not Possible
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 3
Fault Frequency: 1
Reset counter: 107
Mileage: 144555 km
Date: 2021.08.29
Time: 20:50:21
Yes. After the bracket was replaced I was able to reset the error using VCDS and can use lane assist again. One thing to note though is it took some driving though... at first every time I hit the lane assist button after clearing the error it would beep and pop-up the error on the console saying Drive Assist failed. Then I reset it using VCDS and didn't hit the button to try again.... the error was cleared and I drove around not thinking about it and then tried the button the next day and, sure enough, it worked and turned on like it always did working great. Like Dennis said above, you can reset the error and if the sensor isn't out of position it should fix itself after driving around for a while which it needs I guess to do the recalibration/initialization.
Yes. After the bracket was replaced I was able to reset the error using VCDS and can use lane assist again. One thing to note though is it took some driving though... at first every time I hit the lane assist button after clearing the error it would beep and pop-up the error on the console saying Drive Assist failed. Then I reset it using VCDS and didn't hit the button to try again.... the error was cleared and I drove around not thinking about it and then tried the button the next day and, sure enough, it worked and turned on like it always did working great. Like Dennis said above, you can reset the error and if the sensor isn't out of position it should fix itself after driving around for a while which it needs I guess to do the recalibration/initialization.
Thanks for the reply. I’ll check for bumper/bracket damage that might be hard to see from normal viewing positions. I did reset it with VCDS so I’ll wait to test the button as well just in case.
Assuming worst case scenario, is it at all straightforward to code a new (used) module? On my BMW it’s not, but I’m a total VCDS newb.
Did you check your angle offsets like I show in post 20?
replacing the module won’t help unless the module itself has an error but there’s a separate error message for bad control module. My error never said the control module was bad (believe the error is that it can’t communicate with it if it’s “bad”)
Did you check your angle offsets like I show in post 20?
replacing the module won’t help unless the module itself has an error but there’s a separate error message for bad control module. My error never said the control module was bad (believe the error is that it can’t communicate with it if it’s “bad”)
Good point.
Just checked mine and they’re funnily enough very close to yours. 3.11 and -7.61.
My photo is bumper on, laying on my back with a iphone
The -7.61 is your problem. The error message tells you if it's master or slave. So find out which side the -7.61 is and get under there to see if you see some bracket damage. My wife backed into something and barely did any damage to the bumper so it may not take much to knock these sensors off a few degrees.
Master = control module 1 = passenger side = Dynamic angle offset lane change assist 1
Slave = control module 2 = driver side = Dynamic angle offset lane change assist 2
My photo is bumper on, laying on my back with a iphone
The -7.61 is your problem. The error message tells you if it's master or slave. So find out which side the -7.61 is and get under there to see if you see some bracket damage. My wife backed into something and barely did any damage to the bumper so it may not take much to knock these sensors off a few degrees.
Master = control module 1 = passenger side = Dynamic angle offset lane change assist 1
Slave = control module 2 = driver side = Dynamic angle offset lane change assist 2
Bummer. I found the angle that you used to view the sensors. Fortunately/unfortunately I don’t see any bracket damage at all. I’m not sure why it would go out of alignment unless somehow something hit the bumper and didn’t cause paint damage or maybe the sensor/ module itself failed internally. I looked at a video with what is required to calibrate the crazy thing. Pretty intense. We will likely just be without, sadly. At least there isn’t an annoying dash light or anything in the MMI.
09-04-2021, 10:47 AM
