Noticed tonight that if you use the windscreen wipers either flicked down for a quick wipe or set at a variable speed my interior courtesy lights flash, not bright but certainly enough to notice. I've changed them to LED's but i've never heard of this happening. Any ideas whats causing it??

Yes, you wouldn't have seen it when you had incandescent bulbs fitted but a very brief current is clearly flowing and since LED's are 'instant-on' you are now seeing it. I would imagine the cabin control logic is briefly energising the circuit by default before the conditional logic switches it off again. It's just bad programming which was never caught during testing.

Yes, you wouldn't have seen it when you had incandescent bulbs fitted but a very brief current is clearly flowing and since LED's are 'instant-on' you are now seeing it. I would imagine the cabin control logic is briefly energising the circuit by default before the conditional logic switches it off again. It's just bad programming which was never caught during testing.

Is there any way to sort it?

Is there any way to sort it?

Turn the roof interior switch to the middle (completely off).

That's the only way to stop them flickering.

Is there any way to sort it?

If you fit LEDs then you need to fit a resistor and diode to the circuit

Unfortuanatley I do not know the values or where to fit (forgotten)

National

1K resistor and IN4001 diode, also forgotten where they go

The LED itself acts as a diode (hence why they only work inserted one way, and the name Light Emitting Diode). Solder the resistor to the back of the festoon bulb in the middle. This will add voltage drop to the entire interior light circuit. Another easy fix is to swap one of the bulbs for a standard non-led one. The one bulb should be enough to introduce a load on the circuit.

Thanks guys, i'll go with Fabla's option for now

The other option I hadn't thought of is to buy one LED bulb described as a canbus one. They have resistors integrated, designed to make car electronic system think there is a bulb when an LED one is used and thwart bulb failure warning systems. Having a resistor already takes the guesswork out of buying a resistor and soldering etc. They usually cost more than standard LED bulbs. You should only need one as that would place enough load on there to get the desired result.

On a side note do all Fabias have 3 bulbs, a centre and two reading lights?