Infiniti Q50 Headlight Assembly Replacement Guide

For your Infiniti Q50, you might want to hire professional assistance for the replacement of headlights, especially if you want to replace internally installed headlights. 

Professional help for a premium vehicle service can cost anywhere from $250-$700, which is not within everyone’s reach. However, a replacement does not need to be expensive as you can replace the headlights yourself with the right knowledge.

Headlight Assembly Replacement Cost

Even on the same car model, replacement costs can vary depending on the year of manufacture. 

More widely used Infiniti Q50 headlight models may have easily available, cheap replacement kits available, while the newer or older models may prove costlier. In case you use professional help for the replacement process, you may need to spend an additional $250-$700 on just labor. 

An entry-level, good-quality kit for replacing Infiniti Q50 headlights will cost you only about $70-$200 for most Infiniti Q50 models.

Replacing Procedure for Installing Infiniti Q50 Headlight Assembly

  • The first thing you have to do is to open the bonnet to change the wasted turn signal bulb.
  • The pointer light is situated close to the front lamp gatherings inward corner. Search for the dark elastic plastic cover at the rear of the fog light lodging.
  • The cover is held in place by a single black plastic blind rivets hold-down. Firmly get out the little round button from the center of the fastener with the small flat head penknife.
  • Take out the clasp base once the middle pin is in the up and prepare for the vacant position.
  • Set the hold-down fastener aside in a secure location.
  • Politely arc up the black plastic/rubber cover to gain access to the headlight housing’s rear.
  • Turn the base of the grey plastic front turn signal bulb socket 1/4 turn anticlockwise.
  • Later off the socket from its original place.
  • Be mindful while eliminating the old light in the event that it as of late turned on. The old bulb may still be hot enough to burn your fingers.
  • Pull the old light bulb attentively out of the socket.
  • If you’re having a problem removing the old obstinate and stuck bulb in case of oxidization, reasonably retreat the wasted bulb and pick it out.
  • To keep the old bulb from breaking in your fingers, don’t apply too much pressure to it.
  • The OEM (original equipment manufacturer) light bulb in Infiniti Q50 was labeled HT7444NA 12V28/8W X98.
  • If you live in Europe, your QX60 is most likely fit out with the European WY21W bulb.
  • Insert a new 7444NA taper light bulb into the socket.
  • Install some well-suited replacement 7444NA LED bulbs if you want more shining in front turn signal lights.
  • Wipe away any oil from your fingers or dirt from the new bulb with a disposable handkerchief and some isopropyl alcohol.
  • Any oil or fragments on the new bulb may cause dim light, minimizing the bulb’s life.
  • To check the new light bulbs, turn on the warning lights.


If you fixed LED bulbs and they don’t turn on, try to unfasten them from their place, turn around them 180 degrees, and replace them. Some LED bulbs are poles apart and will only work if the “+” positive and “-” negative power-driven are placed accurately.

Replace the bulb socket in the container and move it 1/4 in a circular motion to secure it in place.

Driven bulbs power the low beam, parking, and side marker lights which should last the existence of the vehicle. 

Check for an intertwined bulb if any of these bulbs are not working. Down is the rubberized plastic cover over the headlight assembly’s rear. 

Make sure that the button head for the pin in the clasp place is up and delivered. Re-insert the fastener and then press the button to secure it in place.


Replacing your headlight assembly on Infiniti Q50 can be overwhelming especially when you don’t have much mechanical know-how. However, the headlight housing on the Infiniti Q50 is fairly straightforward and easy to manage for any beginner. 

Make sure you follow all the steps along with the necessary safety precautions to ensure a quick and hassle-free DIY replacement. 

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