Kia Ceed III SW 2021 1.5 TGDI 7 DCT No 48V LKA Wiring Diagram

[acbw132zug]

Hello guys,

Sorry for using English here. I'm from Taiwan and I drive ceed MK3 SW 1.5t 2021 here.
I had done many modified on my car. For the eletrical things I had complete adding the steeling wheel shifter/illuminated door sills with led and automaticlly disable ISG when starting up the car.

Now I'm trying to automatically disable LKA like what I did on ISG. However, I cannot find the circuit diagram for my car anywhere on the Internet. Here seems to be a very professional forum.

Anyone can help to provide such diagram for me?
The outside addOns for my car are BSM kit, pretty good quality and lookings.
The pictures of diagram and the connector are what I used for disabling ISG.
I need the same circuit example and connector definition for LKA, thanks.

[dmmuk]

Hi. This diagrams do you need?

[acbw132zug]

Hi. This diagrams do you need?

Hi Dude, I believe this is it. Can you get me the connector definition for M12-T as well? Just I want to confirm the connector shape and ping location are same as mine on the car.
Then I can start my diy thing.

Thank you very much!

[acbw132zug]

Just tested, I connect the wire 4 directly to gnd point but not working. The LKA icon still exist and no change on the Dashboard.
I used paper clip in parallel with wire 4(the grey in the photo).
Don't know if it's because paper clip not properly connected to the pin. Will find some time to test again.

[dmmuk]

Hi. If you want to disable LKAS permanently, you need to code the dashboard. M12 pins layout in the attachment.

[acbw132zug]

Hi. If you want to disable LKAS permanently, you need to code the dashboard. M12 pins layout in the attachment.

What I complete to disable stop/start everytime when starting the car:
https://youtube.com/shorts/5KmkTuYMKkY

I planned to disable it in the same way using delay relay module:


In other words, I used this delay relay to simulate a press on specific button by short circuit wires.
As the diagram, seems I can easily short circuit pin 4 and pin 12 to disable or enable LKAS. However, last time not successful yet.
Maybe just leave it but surely I will try someday haha.
Additionaly, I was thinking that the diagram is a little bit different from the stop/start, pin 4 will go through a resistance first and then through switch through and finally pin 12. Maybe I will need to add resistance if I want to trigger it through my own wires. Is it possilbe to get the Ω of this resistance from the wiring diagram?


BTW, I'm planning to add led to 4 doors and need them to turn on when door opened and seems not possible to pull the wire from inside of the car to door panel.
I had already get a signal to trigger a relay for lightning up my illuminated door sills with led from the reading light.

At first I think I can pull the wire I already have to door panel. However, after I pull out connector of the doors there are no space for me to do such thing:


Can you help to provide door connector pins layouts for each door? I believe there're correct wire exist already in the harness that go to 4 doors.
Just I need to know which one and then I can start to adding the LED to the door panel.

Thank you so much bro, this car is really rare in my country, and for these electrical thing I got no resource and can only ask or search worldwide. The local dealer say no to me for providing such infomation .

[dmmuk]

What I complete to disable stop/start everytime when starting the car:
https://youtube.com/shorts/5KmkTuYMKkY

I planned to disable it in the same way using delay relay module:


In other words, I used this delay relay to simulate a press on specific button by short circuit wires.
As the diagram, seems I can easily short circuit pin 4 and pin 12 to disable or enable LKAS. However, last time not successful yet.
Maybe just leave it but surely I will try someday haha.
Additionaly, I was thinking that the diagram is a little bit different from the stop/start, pin 4 will go through a resistance first and then through switch through and finally pin 12. Maybe I will need to add resistance if I want to trigger it through my own wires. Is it possilbe to get the Ω of this resistance from the wiring diagram?


BTW, I'm planning to add led to 4 doors and need them to turn on when door opened and seems not possible to pull the wire from inside of the car to door panel.
I had already get a signal to trigger a relay for lightning up my illuminated door sills with led from the reading light.

At first I think I can pull the wire I already have to door panel. However, after I pull out connector of the doors there are no space for me to do such thing:


Can you help to provide door connector pins layouts for each door? I believe there're correct wire exist already in the harness that go to 4 doors.
Just I need to know which one and then I can start to adding the LED to the door panel.

Thank you so much bro, this car is really rare in my country, and for these electrical thing I got no resource and can only ask or search worldwide. The local dealer say no to me for providing such infomation .

I understood. It is possible to pool wires inside the door. I've been doing this.

This is my car and what I've already done myself. But in Russian.
https://www.drive2.ru/users/dmmuk/

[acbw132zug]

I understood. It is possible to pool wires inside the door. I've been doing this.

This is my car and what I've already done myself. But in Russian.
https://www.drive2.ru/users/dmmuk/

Nice bro, awesome upgrade for your ceed. I just complete to run wire into 4 door panels. I drill a hole larger for the empty pin of molex plug. And then just pull around the wire and put back the connector. Later can start to add the leds.