
Q50 original LED bulb models are TYC20-9506-00,20-9505-00-14-14. The following are precautions for using car bulbs: Timely bulb replacement: As headlights are used, bulb brightness gradually decreases. This normal physical phenomenon is called lumen depreciation. Dim headlights can easily cause accidents, so bulbs should be replaced promptly when dimming occurs, not waiting until they fail completely. Choosing high-quality bulbs can delay color depreciation, extend service life, and provide more safety for driving. It is recommended to replace bulbs in pairs every 20,000 kilometers. Bulb selection: If the color temperature exceeds 6000K, light penetration decreases, which is unfavorable for driving in rainy or foggy conditions. Choose car bulbs with safe and effective color temperatures.

















I'm the owner of an Q50 and recently changed the bulbs myself. Both the high beam and low beam headlights use H11 bulbs, the fog lights also use H11, and the turn signals are T20. The high-mounted stop light requires an LED light strip, and the side mirror turn signals use T10. Remember to buy reputable brands like Philips or Osram for guaranteed quality. Last time I bought a cheap no-name brand, and it burned out in two months. If you're doing it yourself, you'll need to turn the wheels to remove the fender liner—it took me half an hour the first time. I recommend wearing gloves to avoid fingerprints, which can affect bulb lifespan. If you go to the dealership, the full set of bulbs plus labor costs over 600, but buying them yourself is only about 200.

Our repair shop frequently deals with lighting issues on the Q50, with the most common problem being owners using incorrect bulb models. For this vehicle, both high and low beams use H11 halogen bulbs with 55W power, and the fog lights share the same specification. The turn signals require PY21W (T20 size), reverse lights use W16W, and license plate lights are T10 size. Special attention is needed for post-2018 models where some brake lights were changed to T25 bulbs. We recommend checking bulb contacts for oxidation every two years, as the Q50's low-voltage wiring harness connectors are prone to moisture accumulation leading to short circuits - a particularly common issue in northern regions during snow and ice conditions. Frequent bulb burnouts indicate the need for alternator voltage inspection.

Last week, I just replaced the bulbs for my wife's Q50. Both the high and low beams of this car use H11 bulbs, and a pair of Philips H11 halogen bulbs costs 69 yuan on JD.com. The turn signal uses a T20 specification with an orange-yellow cover. Here's a little tip: the rear taillight assembly is the most difficult to remove; you must pry open all the plastic clips on the trunk liner. If you're replacing halogen bulbs with LEDs, remember to choose versions with decoders, otherwise the onboard computer will report fault codes. The newly released headlights have a more focused beam pattern, but they cost three times more than regular bulbs. I don't think it's necessary to spend that much. You can find the bulb model sticker on the inside of the hood.

A decade of experience with car lighting tells you that the Q50 base model uses all standardized bulb sockets. The low beams are H11, and the high beams are also H11, but modders often upgrade to xenon D2S or LED. For fog lights, stick with H11 and don’t increase the wattage, or you’ll definitely blow a fuse. Brake lights use T20 single-contact bulbs, while turn signals are PY21W amber. Stance enthusiasts love swapping license plate lights to ice-blue LEDs (T10). Always install a voltage regulator when modding—the Q50’s electrical system is sensitive to voltage fluctuations. One owner learned the hard way by replacing 55W bulbs with 90W ones, warping the reflector bowl in the headlight assembly within two weeks.

The manual clearly states: For 14-17 Q50 models, both low and high beams use H11 halogen bulbs, while some models after 2018 switched to LED modules. The reverse light is W16W, the fog light is H11, and the interior reading light uses a 31mm double-ended plug bulb. Last winter, the left headlight of my car suddenly dimmed, and it was found to be caused by poor contact due to deformation of the lamp socket spring. Such metal part deformation is difficult to repair, and ultimately the entire lamp socket was replaced. Southern car owners are especially advised to check the sealing rings, as moisture during the rainy season can easily cause the reflector to yellow. Although OEM bulbs are expensive, they are durable—mine lasted five years before needing replacement.


