I got an 2021 fabia mk3. The headlights are reflectors. I want to swap to LED. But I have heard LED can cause error messages. Does anyone know what LEDs have no issues with it? Thanks.

The bulb has to work with the reflector, you'll want to know if it's a H4, H7, H8? bulb, decide what type of light colour you want and as you say if it works with the over-complicated VW computer programs and systems.

 

Find out which bulb it is and give Classic Car LEDs Ltd a phone call (they also sell for modern cars) one of the few sellers I trust. - https://www.classiccarleds.co.uk/

 

As per my thread below. -

 

 

3 hours ago, lingho said:

The headlights are reflectors. I want to swap to LED.

It is illegal to fit LED bulbs in reflector headlights. It is also illegal to fit plasma discharge units  in reflector headlights.

3 hours ago, nta16 said:

The bulb has to work with the reflector, you'll want to know if it's a H4, H7, H8? bulb, decide what type of light colour you want and as you say if it works with the over-complicated VW computer programs and systems.

 

Find out which bulb it is and give Classic Car LEDs Ltd a phone call (they also sell for modern cars) one of the few sellers I trust. - https://www.classiccarleds.co.uk/

 

As per my thread below. -

 

 

Actually, I don’t know the specs of my headlights. Can you tell what specs am I using? H4 or h7?

2 hours ago, lingho said:

Actually, I don’t know the specs of my headlights. Can you tell what specs am I using? H4 or h7?

Want a photo of the bulbs.

 

Look like H7's?

 

If so just use these:-

https://www.amazon.co.uk/gp/product/B07FXRDJV7/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

 

Thanks. AG Falco

5 hours ago, Paws4Thot said:

It is illegal to fit LED bulbs in reflector headlights. It is also illegal to fit plasma discharge units  in reflector headlights.

Thanks.  I did wonder but those at Classic would have pointed out my error and not just sell the items like some.

 

I'm more used to cars from the 1960s and 70s where they were allowed a few years back (subject to lenses pattern matching) and on looking it up I see the LED bulbs are only for cars made or or the road before 1986 (new cars to me).

 

6 hours ago, Paws4Thot said:

It is illegal to fit LED bulbs in reflector headlights. It is also illegal to fit plasma discharge units  in reflector headlights.

@lingho in case you missed my error, sorry.

 

 

3 hours ago, lingho said:

Actually, I don’t know the specs of my headlights. Can you tell what specs am I using? H4 or h7?

Sorry again, in your photo I can't even see any bulbs, don't give up your day job for photographer.  I think I've seen before that they might be H4 but again don't rely on me for this but manufacturers and suppliers often have databases of such info on their websites.  Many/most(?) car manufacturers list the types of bulbs in the Owner's Manual but oh, no, not with VWŠkoda, one of a few omissions or secrets they keep out of those publications.

 

Your photo at least shows the light cover isn't dirty or badly scratched or fogged up.

Edited 18 November, 20241 yr by nta16

On 18/11/2024 at 17:36, lingho said:

Actually, I don’t know the specs of my headlights. Can you tell what specs am I using? H4 or h7?

I'm not sure if it's the same for the facelift but when I changed the bulbs on my pre-facelift they were H7s. I opted for cooled halogens though so I don't know much about the LED conversion.

 

P.S. if you can't find out online you can take a bulb out and show a photo of it here or check online.

This is the standard H7 bulb that I swapped out of mine.

Edited 19 November, 20241 yr by NavyW7735

Fabia III's can come with H4, or H7 headlights from the factory.

The H7's were a cost option when I ordered mine.

 

Thanks.  AG Falco

H4 bulbs are double filament for high a dip beam usually (and as I discovered come in two different location fixings pt43 and pt45).

 

H7 bulbs are IIRC a single filament.

 

So, as I've just remembered you can see if the bulbs are H4 or H7 by looking at them, from in from of them, and changing from dip to high beam and see if the light from the bulbs change.

 

22 hours ago, nta16 said:

So, as I've just remembered you can see if the bulbs are H4 or H7 by looking at them, from in from of them

It's even easier than that. 

Look at you headlight units.

 

If you only have 1 bulb and one reflector each side, you have 2 H4 bulbs, and the bulbs have 3 connectors on the back.

 

If you have two bulbs and two reflectors each side , you have 4 H7 bulbs , and the bulbs have 2 connectors on the back.

Some Fabia's ( like mine ) have one projector on the outside and one reflector on the inside.

The projector one has a big lens in front of the bulb and you can't see the bulb, this is for dipped beam.

The inner reflector one is for main beam.

 

HTH

 

Thanks. AG Falco

1 hour ago, AGFalco said:

If you only have 1 bulb and one reflector each side, you have 2 H4 bulbs, and the bulbs have 3 connectors on the back.

3 connectors for the double filaments and common return, one filament for high other for low beam.  Presumably P43t fixing.

 

1 hour ago, AGFalco said:

If you have two bulbs and two reflectors each side , you have 4 H7 bulbs , and the bulbs have 2 connectors on the back.

So OP's photo with two reflectors is H7 bulbs then.  Why VW can't put that info in the Owner's Manual like other manufacturers is beyond me.

 

21 minutes ago, nta16 said:

So OP's photo with two reflectors is H7 bulbs then.

 

On 18/11/2024 at 19:58, AGFalco said:

Look like H7's?

 

22 minutes ago, nta16 said:

Why VW can't put that info in the Owner's Manual

Skoda manual pages 186 to 190 for headlight bulbs.

 

H8 are for the front fog lights if you have them.

 

Thanks. AG Falco

On 18/11/2024 at 19:58, AGFalco said:

Look like H7's?

Yes I give you credit for that but there is a question mark at the end.

 

7 minutes ago, AGFalco said:

Skoda manual pages 186 to 190 for headlight bulbs.

Not for a 2021 AFAIK, and not in the annoying online version I looked at, and not in the paper (or pdf) "Operating Instructions" for my wife's 2015 car. - https://manual.skoda-auto.com/004/en-com/Models

 

Edited 20 May20 May by nta16

On 21/11/2024 at 22:04, nta16 said:

Yes I give you credit for that but there is a question mark at the end.

In the photo I can see what looks like two reflectors , but can only see the top of the outer bulb.

The bulb looks like the end of either an H7 or an H4.

 

I can't see enough of the bulb to confirm, hence why I asked for a photo.

On 18/11/2024 at 19:58, AGFalco said:

Want a photo of the bulbs.

There is still the possibility that the second reflector could use an H1 bulb.

These can be used for main beam which is normally the in the inner position.

 

HTH

 

Thanks. AG Falco

3 hours ago, AGFalco said:

n the photo I can see what looks like two reflectors , but can only see the top of the outer bulb.

The bulb looks like the end of either an H7 or an H4.

 

I can't see enough of the bulb to confirm, hence why I asked for a photo.

Yeap totally agree,  Not sure about H1 but tha's the point I don't  know (didn't even consider or know about it).  Hopefully lingho is sorted now but typical non-forum response, or lack of,  or has yet to get to resolve.  Internet sites often have quick questions that what quick answers regardless whether enough information has been given or is possible.  Quick answers often seem to be preferred to accurate answers such is the internet.