Hello friends, I have a question for you, I have an Octavia 2018 and I replaced the normal halogen h7 bulbs with LED bulbs h7, but when I accelerate the light intensity changes, maybe I need to recode the low and high beams to LED. Please tell me how to recode the normal h7 halogen bulbs to LED h7 for my car step by step. The headlights are normal without loupes.

Changing the bulb type requires changes to the correct Leucht channels in the BCM.

What do you mean by "loupes"?

Which light sources were installed?

Dont know where you are but in most countries it is illegal to fit LED into standard housings and the only way is to put whole new headlights in. Certainly illegal in Australia anyway. Rreason bein the focal length and other things are not the same and thats why LED's flare all over the place in standard fittings

1 hour ago, Cairus said:

Какви източници на светлина бяха инсталирани?

The original ones are normal halogen bulbs, now I installed H7 LED from the brand Xstorm, my old Octavia had them and they didn't do this. That's why I want to recode it and make it glow normally.

7 hours ago, PetrolDave said:

Промяната на типа крушка изисква промени в правилните канали на Leucht в BCM.

Какво имаш предвид под „лупи“?

My headlight is a regular one with a reflector, there are other types that have a magnifying glass in front of the bulb. That's what I'm asking, how and in which channel should I do the coding with my vcds

2 minutes ago, Naiko said:

The original ones are normal halogen bulbs, now I installed H7 LED from the brand Xstorm, my old Octavia had them and they didn't do this. That's why I want to recode it and make it glow normally.

As I said Check legality and just because you think its OK it may not be

Just now, Exkiwi said:

Както казах, проверете законността и само защото смятате, че е добре, може да не е така.

In my country there are no such regulations, my wife works in the police and there has never been such a problem when they stop someone. You can just wear whatever you want.

Normaly

Leuchte 6

Leuchte 7

Can you explain the full procedure?

Edited 1 September, 20251 Sep by Naiko

Look Here

leuchtenkonfiguration-erkl-rt-tbax-vag-codierungen.pdf

7 hours ago, Cairus said:

Look Here

leuchtenkonfiguration-erkl-rt-tbax-vag-codierungen.pdf

I reviewed the file you sent and I can't find anything in it about how to code regular headlights without lenses with an H7 halogen bulb to an H7 LED bulb so that the light doesn't increase when I press the accelerator pedal and the engine speed increases.

1 hour ago, Naiko said:

so that the light doesn't increase when I press the accelerator pedal and the engine speed increases.

I don't think that's a coding issue, it looks to me like the LED bulbs are too voltage sensitive - and since the BMS allows the voltage to vary between just over 12V and over 14V while driving no coding is going to solve that.

3 hours ago, Naiko said:

I reviewed the file you sent and I can't find anything in it about how to code regular headlights without lenses with an H7 halogen bulb to an H7 LED bulb so that the light doesn't increase when I press the accelerator pedal and the engine speed increases.

I'm sorry, but you haven't understood the system... I don't have any 0-100% instructions

13 hours ago, PetrolDave said:

I don't think that's a coding issue, it looks to me like the LED bulbs are too voltage sensitive - and since the BMS allows the voltage to vary between just over 12V and over 14V while driving no coding is going to solve that.

Is there a way to fix this? I had the same brand on my old MK3 Octavia and I didn't have a similar problem. I bought these recently and installed them, now I'm driving an Octavia 3 again but fl. I thought that when we code the system on ice, I would get a straight, non-variable current and this increase in light would disappear.

Pre Facelift have other BCM.

The Output of BCM use PWM

Edited 2 September, 20252 Sep by Cairus