anybody else think their memory position settings are forgetting the full settings?
only had the car 3 weeks and it is not every time but just a few times.
1st time I thought it was maybe because i left the keys in the car when i washed it
2nd time i just reset memory 1
3rd time i held in position 1 and it went to where it was suppose to
4th time i did the same as in the 3rd time and now i am here asking the group. did notice it went about half way to it's setting.
at no point in time have i used setting 2, it's only me driving the car

 

Mine works perfectly every time. Are you sure you are using the same fob each time? Do you have the exit position set ALL they way back? If so, set the exit position slightly forward.

 

Jeff mine does the same but it's been good this week.

 

Mine will occasionally stop just short of where it's supposed to be and the only correlation I can think of is that if I keep my foot on the brake pedal after starting it goes to the right spot every time.

 

I am Jeff, mine has not worked right as far as i am concerned since getting it 11/10/20.
Took it back to the dealer (Stingray Chevrolet) and their expert said I was using the wrong keyfob for driver # 1.
From what I read afterwards I don't think it matters - Use keyfob # 2 and set as driver #1.
My car is hit or miss on remembering settings and mainly miss - seat rarely goes to where I have it set. I have reset memeory #1 countless times.
Recently, it lost the exit setting. Put car in park, turn car off and nothing. Seat did not go back or steering wheel go up.
I have reset it and it is currently working ok.
Got in the other day and most of my favorites that I set on the entertainment screen for my usb stick were gone (blank).
Does anybody think these electrical gremlins are related?

I'm getting close to taking it back to Stingray for them to diagnose issue!

 

You need to wait for all the things to finish moving before putting the car into drive. That stops everything.

 

I have the same, intermittent problem. The seat does not always fully move to my saved setting. Pushing and holding the button for my setting will cause the seat to finish moving to my set position.

 

Those that have intermittent problems. As stated in post #2 this can be caused by having the exit position set too far back. If the seat contacts the carpet behind the seat it triggers the seat travel limit switches. When that happens memory recall becomes erratic. Try moving your exit position forward slightly. This was a common problem on the C7 and this is the solution.

C8 Owners Manual

 

Additional: Second Key is never used nor near the car.

Zymurgy, ADP as we call it in the automotive world is normally just a controller counting number of revolutions, or least that is how the 3 seat suppliers I manage do it, Lear being the only one I don't, nor do i have any sports car seats. But since this is Lear and it's a vet, they maybe using the better of the 2 technologies in my opinion that I used to use on Dodge seats which is the full back is detected via an increase in Amperage signalling the controller to stop. (why better - prevents seat from over torqueing rearward and not able to come forward at next start up). In this case they still remember number of cycles forward and if it is stopped short in theory it would go further than the set point forward since it is learned once and not everytime, which is not the case here. Full back is not really a known position because if it sets to position 1 and then i bump it slightly for example: you know, feeling extra short that day, it really don't keep up, i.e.: currently at set 1 plus let's say 1 forward revolution. Thanks for answering though. Sounds like if i understood the technology used I could help the group. what is difficult is that the controller is normally built buy somebody complete different than the seat or is what we call an imposed supplier so neither supplier really knows each other nor do they work on these issues together.
The Manual i think is funny, basically i read it as we have issues, haven't figure out why seats do not perform per design intent but here is something to try.

mike and pro,
thanks for validating it's really an issue. i will try the keep foot on brake trick. worked so far for maybe the last 15 times I climbed in and out since writing the first post so maybe a start or i just jinxed myself.

 

Nope, there are actually pressure sensitive sensors under the carpet behind the seats (on the firewall). I really suggest you move your exit position forward slightly and see if it fixes the problem. It has worked for many owners.

 

Got any pictures of these pressure sensor wires, actual sensors with wires coming out of them, I looked to disconnect and found nothing? Do they know if I ate a too much that day? Reprogramming the seat rear even at the current spot combined with making sure I hold my foot on the brake during start up does seem to have done the trick for the last 2 weeks. If it gets to be a big enough problem for the group on here, if we have somebody who knows of anybody at the Lear plant who makes the seats we can ask them or if we don't, it's a stretch but since one of my responsibilities is a company that owns them i could try to track down any answers, and i'll have to be nice because I would like to talk to them about the dB level of the tracks which is the equivalent to a C class vehicle in my supplier designs, i mean i know Covid put on weight but i don't need my seat telling me everytime.

 

See your other post about relay noise and my reply. It could be related.

 

Assuming they are similar to the C7, they are under the carpet covering the rear bulkhead. Nothing visible unless you pull the carpeting.