Seat leon Led headlight retrofit

[RiponM_27]

Hello, How many people on here have actually attempted or have done a pre facelift halogen to led headlight retrofit?
I’ve already done the rears which was easy enough but onto the front, I was gifted a set of front LED headlight for free by a friend and would like to attempt a retrofit. I have vcds and coding isn’t a problem? But is it a direct plug in or have i to do wiring on the pins? I am also aware of the level sensor.


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[Cainy1989]

Pretty sure you have to upgrade the main gateway module and a few other bits for the level sensor like a replacement light switch and then you have to change the wiring on the front of the car and code the gateway module in. At least that's what it was when I looked at retrofitting them to my Audi A3 8V - Rears were easy, the front nope, too involved!

 

[RiponM_27]

Pretty sure you have to upgrade the main gateway module and a few other bits for the level sensor like a replacement light switch and then you have to change the wiring on the front of the car and code the gateway module in. At least that's what it was when I looked at retrofitting them to my Audi A3 8V - Rears were easy, the front nope, too involved!

looking on vcds and the loads of other tech pack leon’s i’ve coded for the BCM Supports both halogen and Led. The can gateway also does just needs ticked to say control module is there etc.


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[East Yorkshire Retrofits]

Assuming they’re facelift lights
Wiring changes, range control module, facelift BCM, headlights with control modules, software configuration, level sensor with wiring

It isn't a DIY job, we do it fairly regularly

VCDS isn't sufficient

If they’re prefacelift then you may not need a replacement BCM

 

[RiponM_27]

Wiring changes, range control module, facelift BCM, headlights with control modules, software configuration, level sensor with wiring

It isn't a DIY job, we do it fairly regularly

VCDS isn't sufficient

What wiring needs to be changed? Also i would gp to yous but yous are a boat drive away from me


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[East Yorkshire Retrofits]

All of the wiring information can be found on Seat Erwin

 

[cairus]

Which headlights did you get? Pre-facelift or facelift?

 

[RiponM_27]

Which headlights did you get? Pre-facelift or facelift? What model do you have? Pre-facelift or facelift?

I have been given the prefacelift and mine a 2013 Seat leon Mk3 SE


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[cairus]

My honest opinion? Forget about converting to pre-facelift LED headlights. Are Osram or Philips LED bulbs approved for use in your country?

 

[RiponM_27]

My honest opinion? Forget about converting to pre-facelift LED headlights. Are Osram or Philips LED bulbs approved for use in your country?

If they’re approved in the Uk then yeah I’m in northern ireland so no big difference considering they basically control us But i really like the way the Led ones look like same for the indicator for US STYLE


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[cairus]

Post a Autoscan please

 

[Seriously?]

My honest opinion? Forget about converting to pre-facelift LED headlights. Are Osram or Philips LED bulbs approved for use in your country?

If they’re approved in the Uk then yeah I’m in northern ireland so no big difference considering they basically control us But i really like the way the Led ones look like same for the indicator for US STYLE


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Philips and Osram LED are not E Marked so not road legal in UK unfortunately; although I think I remember seeing somewhere that Osram are bring out an LED unit that does meet ECE R37

 

[LeylandVCDS]

My personal opinion, having previously had a preFL with factory LED and currently a FL with halogens??
Don't waste your money. Compare them like for like, and apart from the obviously slightly more yellow of the halogens, the halogens perform VASTLY better than the preFL LEDs in both throw of light, and the amount of light produced. The preFL LED lamp units are known to be atrocious for light output and spread, especially in the wet.
Given the choice of halogen and LEDs, there is only one option I would consider now, and that would be halogen every single time. Just upgrade the bulbs to NightBreakers or Philips Ultravision, they are fully road legal, and fully plug and play as they are the same 55W bulbs as standard.
Do not attempt to fit aftermarket LED bulbs to your existing reflector headlights either, not only are they not road and MOT legal, the beam pattern from aftermarket LED bulbs is next to non-existant. Also, the controller in the car will not be programmed for LED bulbs, and there is a very real risk of frying the module by changing halogen to LED bulbs and that's not a cheap repair by any means. They are also anti-social, and you risk blinding oncoming vehicles with aftermarket LED bulbs - reflector headlights are certainly not designed for LED bulbs.
The white look of LEDs is absolutely not all it's cracked up to be, believe me.

 

[RiponM_27]

My personal opinion, having previously had a preFL with factory LED and currently a FL with halogens??
Don't waste your money. Compare them like for like, and apart from the obviously slightly more yellow of the halogens, the halogens perform VASTLY better than the preFL LEDs in both throw of light, and the amount of light produced. The preFL LED lamp units are known to be atrocious for light output and spread, especially in the wet.
Given the choice of halogen and LEDs, there is only one option I would consider now, and that would be halogen every single time. Just upgrade the bulbs to NightBreakers or Philips Ultravision, they are fully road legal, and fully plug and play as they are the same 55W bulbs as standard.
Do not attempt to fit aftermarket LED bulbs to your existing reflector headlights either, not only are they not road and MOT legal, the beam pattern from aftermarket LED bulbs is next to non-existant. Also, the controller in the car will not be programmed for LED bulbs, and there is a very real risk of frying the module by changing halogen to LED bulbs and that's not a cheap repair by any means. They are also anti-social, and you risk blinding oncoming vehicles with aftermarket LED bulbs - reflector headlights are certainly not designed for LED bulbs.
The white look of LEDs is absolutely not all it's cracked up to be, believe me.

I was able to get a smashed up headlight from someone for free just so i don’t damage the working ones and i seen a pinout on a forum and i got plugs off a breaker and so far on the broken one high beam and low beam work. I might commit to it honestly .

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[RiponM_27]

I was able to get a smashed up headlight from someone for free just so i don’t damage the working ones and i seen a pinout on a forum and i got plugs off a breaker and so far on the broken one high beam and low beam work. I might commit to it honestly .

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The reason why is i think the headlights look better and being this car im hoping to make it look clean and nice and in my opinion think the led ones look better

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[LeylandVCDS]

Yes they might LOOK better and yes they might actually work when switched on, but as I said earlier, looks aren't everything. You're not looking at the front of the car when you are driving at night. What's important is the safety aspect of how efficient the lights are at night, and especially in the wet. I really do think you'll be disappointed with the drop in performance and light output if you put preFL LEDs in. I've had both, and trust me the preFL LEDs are crap compared to the halogens.
Be aware also that by putting LEDs in, you also need to fit the self levelling mechanism as the beam height alteration in the infotainment does not work on LEDs - apart from the fact that the whole installation will be illegal and not MOT acceptable (the LEDs go through a self levelling program when they are switched on, and without the self levelling sensors the lights will have no way of setting themselves to the correct beam height)

 

[RiponM_27]

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[LeylandVCDS]

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DRL working with headlight dipped and main beam on?

 

[RiponM_27]

DRL working with headlight dipped and main beam on?

Yeah i’ve got it coded to that


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[LeylandVCDS]

Yeah i’ve got it coded to that


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You're determined to dazzle everyone on the road, aren't you? DRL's on with headlights and no self levelling? Really?