|
|
Post by cynical on Sept 25, 2022 22:47:14 GMT
so on my gti the cornering lights come on after turning the steering wheel a certain amount, is there somewhere in the adaptions/long coding that can change the amount the steering wheel has to be turned to activate the lights? id like to have them come on a little sooner
|
|
|
|
Post by newty on Sept 26, 2022 3:57:33 GMT
Have look at Static AFS light in the central electrics. There are "Lenkwinkel" Adaptions which should control that. But I never tried them to be honest.
|
|
|
|
Post by dv52 (Australia) on Sept 26, 2022 22:03:01 GMT
cynical : As my colleague suggests, there are 3 x channels involved for the function in the central electrics module - as follows:
static AFS light
- Oberer Lenkradwinkel (Upper steering wheel angle)
- Unterer Lenkradwinkel (Lower steering wheel angle)
- Steering wheel angle; offset
I suspect that the "offset" channel is needed in this function as a starting condition because of road camber.
Anyhow, the presence of an upper and lower limit means that the function uses what engineering control systems call "Hysteresis". This is a mechanism that stops the function from "hunting" - which happens when there is only one threshold limit. Hunting is where the control system oscillates ON/OFF continuously when conditions are around the single threshold limit. In this application, hunting would mean that the cornering lights would repeatedly switch ON/OFF when the steering wheel angle was close to the single limit.
Hysteresis solves this problem by creating a "deadband" when the steering wheel angle is between the upper and lower limit. At these "in between" angles, nothing happens - meaning that if the cornering lights were switched ON before one of these limits was reached, the light would stay switched ON. To switch the light OFF in this scenario, the steering wheel would need to cross both thresholds. The same happens if the cornering light was switched OFF before one of these limits was reached.
So, why am I telling you this - I hear you ask? Well.......... if you are intending to change one of the threshold limits, I suggest that you retain the same factory deadband value. To do this, I suggest that before you start modifications, first calculate the difference between the upper and lower limits. Maintain this differential when you change the threshold limits (I suggest). For example, if you reduce the lower limit by 2°, also reduce the upper limit by 2°. I suspect that it is OK to increase the deadband value - but I would caution against reducing the size of the factory deadband value!
Finally - when I have modified these values in the past, I've found it useful to check the new threshold angles by viewing Live data on the steering assistance module @ address hex44 (or hex76). Search for Steering angle sensor, angle to see the actual value as you rotate the steering wheel
Don
|
|
|
|
Post by cynical on Oct 2, 2022 11:15:13 GMT
ill have to play with those setting a bit now i understand how its saposed to work
|
|
|
|
Post by cynical on Oct 8, 2022 21:59:08 GMT
tried changing those values as well as the upper speed limit to 50 and 60 kph. neither did a thing. would having my nar restricion removed have anything to do with this?
|
|
