This LED light works properly on 95%+ latest/European cars with OBC CAN Bus wiring system (without error message); if it shows error message, you may need a load resistor installed in the circuit
Cross Reference for this LED light bulb: PY24W (PGU20-4), PSY24W (PG20-4), 5200 / 5200s
Fitment reference:
For Audi:
09-12 Audi A4 B8 (with Xenon HID headlamps)
09-14 Audi Q5 (with Xenon HID headlamps)
For BMW:
Direct replace original Manufacturer Part Number: 63217161306, 63217162851, 63217162853