I know this may seem quite an odd request, but while I'm living in a lovely house, the road I have to drive to reach home has a terrible defect. Before getting home, on either direction, there a slight corner, and the two of them are connected by a short straight section of few tens of meters, in the middle of which there is my house's entrance.

Now, what happens is that I turn on the indicator light with the proper advance, then as soon as I reach the straight the indicator lights turns off (except of course of I keep my don't on the lever), and I also need to start braking. This causes sometimes confusion in drivers behind me, and I fully understand them I'm braking in the middle of the street, while not having any more indicator lights on, then turn right or left depending on the direction I'm coming from

Is there any way to increase the angle of steering wheel rotation not causing the indicator lights to turn off? I'd like, say, that if the indicator light is turned on when the steering wheel has a rotation angle of less than 30 degrees, retiring to the rest center position does not turn the lights off. This angle seems to me something like 10-15 degrees maximum.

 

Can't directly answer your request for a coding solution - I'd think it's a purely mechanical system.
But FWIW ... I have a similar situation to yours. I just use the passing/change lane position while in the curve and switch to full turn when the road straightens out.
-Mike

 

Not sure about it being purely mechanical: after all the lever always return immediately to the center, so if it something mechanical it is not there. As the system has a steerng angle sensor I took for granted it was using it for this task.

Nevertheless, I will also try your technique once I return home (I'm out of the country until Friday, and eager to recover my MC from the company's parking lot and drive it home)

 

Looking at newtis to better understand your question and my answer, re. SW vs. HW I first came across these bits:

https://www.newtis.info/tisv2/a/en/f...ing/1VnXVc97tH
The phrase "The rotor position sensor is at the same time the steering angle sensor." which may be of interest though nothing about the turn signals per se.https://www.newtis.info/tisv2/a/en/f...eel/1VnXrBSlcV

This page has more detail about the above mentioned springs aka "Coil spring cassette" :
https://www.newtis.info/tisv2/a/en/f...sor/1VnYrUJlAK
Still appears to be the HW turn signal cancelling mechanism

-Mike
p.s. This won't hurt either; if you got this far https://www.realoem.com/bmw/enUS/sho...diagId=61_3285

Edit: Here's the functional description (FUB) for the "steering column switch cluster" :
https://www.newtis.info/tisv2/a/en/f...uster/GqnYRmRb