Do you have any more details, Rob? As Bolt says, plenty of new cars have LED headlights (including the one I've got on order), so is there a type of unauthorised LED that's so excessively bright that it makes a car fail the MoT?
An apology, a mistake on my part - it's HID lamps, not LED ones.
The new rule states that :
Some vehicles may be fitted with High Intensity Discharge (HID) headlamps. It is not permitted to convert existing halogen headlamp units for use with HID bulbs. If it is clear that such a conversion has been carried out, rather than replacing the entire unit with one designed and approved for use with HID bulbs, the headlamp should be rejected
The item is listed as a 'major' fault, if detected.
There is an item on LED lights in the new rules. As I'm sure you're aware, the LED light is usually composed of a number of small lights. The rules now make clear that failure of a some of those lights over time does not constitute a major failure. Basically, if over half of the individual LEDs are working in any lamp unit, then it will be a 'minor' fault. If less than half are working, it will be 'major', and thus a failure.
Just had a look through the new rules in some detail. I notice that the (usually yellow) EML light being an advisory is now going to be a 'major' fault - meaning a failure.
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