The approval is only given in conjunction with headlights where the optics have been tested with the LED. This what the TÜV verifies and approves.
This is the reason why the exact E-number is mentioned in the document and the correct headlight required on the car.
The alternative to the LEDs is the Osram Nightbreaker 200 (H4 and H7 available). Much cheaper, no approval required and a vast improvement.
It also does not annoy oncoming traffic as much as the LED - but then again: almost all the of new cars have LED lights....
