Fitted led bulbs to my 2011 yeti number plate today and used VCDS to de activate number plate lamp monitoring, but still getting fault back. Any ideas folks? Lamps look great,real clean white light would be a real shame to have to go back to old yellow looking ones. Could not live with fault warning light on dash.

That suggests you haven't done the coding correctly.

Yes using coding from previous posts on here.

Disable Diagnosis Of Number Plate Light Bulb (to use LEDs):

Cent Elect - 09

Coding - 07

Long coding helper

Byte 23 - Bit 6

I did see that Byte 23 - Bit 5 was to disable all lamp monitoring but left that tick as I still want warning of other lamp faults.

Have cleared all faults but as soon as light is turned on fault returns.

Am thinking now maybe I should have used VCDS before replacing lamps with LEDS would also have been easier to test coding was good.

So I think order of play should have been VCDS first pull one old lamp from holder check faults as I now might have to start again or worse still refit old lamps and return coding to original setting and call it a bad job.

LEDS do fit interior so would not go to waste.

But I know one of you bright sparks will have the solution!

 Lamps look great,real clean white light would be a real shame to have to go back to old yellow looking ones. Could not live with fault warning light on dash.

 

Funny how we  have different takes on things. I'm all in favour of leds, but I've noticed recently that the blue/white led sources "clash" with the yellow reflective number plates and make the plate less readable. The old "yellow" filament bulbs enhance the optics and make the number plate much more readable.

 

And anyway, why is "white great"? The rash of new DRLs are blindingly bright in daylight - I find the "yellow" DRLs are more visible as your eye can be drawn to them and not be dazzled. The leds are so bright in a lot of cases to be offensive, how they can be "legal" baffles me - is it just fashion/styling?

 

On the other hand, our domestic Lighting Regs are so out of step with EU ones, which take precedence, that they urgently need over hauling. Modern day fog lights are so optically efficient with a flat cut-off that there is no reason why they can't be used as driving lights instead of being an offence in the UK.

 

Just my old weary take on things :think:

Am not a fan of after market LEDs upfront head lights being the worst offender along with fogs, as I have lived in Ireland for 14 years now where number plates have a white background can not say how readable yellow ones are with white LED lighting.

But LEDS just the on the rear Irish white background plate not only look better but I think make them more readable.

As for the legal side ultra bright retro fit is not right, as they tend to be fitted to older cars in a attempted to make them look more modem

And this leads to reflectors not being suitable, lights poorly aligned etc, we have all been the on coming driver cursing under there breath.

What LED bulbs have you fitted?

 

Most likely cause for the bulb fault is that resistance offered from the LED is not as great as with the traditional bulb, and this triggers the fault.

 

Solution from other models seems to be add in resistors to increase the load on the circuit, or buy genuine LED numberplate light units, from an Audi Q7 or similar.

 

A useful thread for you to read through, from the Octy Mk3 section: http://www.briskoda.net/forums/topic/289611-genuine-vw-led-number-plate-lights

I fitted some LED reversing lamps from SuperSkoda into TIBET III. Work brilliantly (excuse the pun) with no error messages.

 

One interesting thing it does is about 10 seconds after the ignition is turned on, the reversing lights flash five times in very quick succession (reverse gear not selected). Presume it's the electrics going through their test procedure and 'normal' bulbs don't visually show the test because of their higher natural resistance whereas there's enough power there to light up the LED bulbs.

 

http://www.superskoda.com/Skoda/YETI/Yeti-MEGA-POWER-LED-reverse-bulb-system-KI-R

You are right with the load of the LED being much less than a standard lamp that is why you need to use VCDS to turn off the lamp monitoring for that circuit so the load of the lamp should be irrelevant. Or thats how I see it!

My problem is When code with VCDS as above it still gives fault!

All a resistor does in up the load to trick the ecu into thinking all lamps are lighting.

Apparently that box is not for Skoda? Because i got the same problem. And the answer i got in the VCDS part of the forum can be read here: http://www.briskoda.net/forums/topic/304667-problem-deactivating-licensplate-bulbcheck/

 

I now have the yellow bulb warning in the dash... Because LED is much nicer. 

Thank you very much Eldholm I have three options now warning light on dast,put back old lamps or fit resistors.

Like you I think LEDS look very good so will have a think as what to do now.

Thank you again.

Have you read through the Octy3 thread I posted a link to?