Used for: Back Up Reverse Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Rear
Used for: Interior Door Light Bulb
Used for: Trunk or Cargo Area Light
Used for: Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This page helps you find the correct bulb sizes for the 2015 Acura RLX by lighting position, so you can verify what fits before you buy replacements. The RLX uses a mix of LED and conventional bulbs depending on the lamp location, and the exact setup can vary by trim, lighting package, market, and body style.
Use the chart on this page as a position-by-position reference for exterior and interior lighting on the 2015 Acura RLX. That makes it easier to match the right bulb to the right socket, whether you are replacing a reverse light, license plate light, map light, or another lamp on the car.
For best fitment, compare your vehicle’s installed bulbs with the chart before ordering, especially if your RLX has a different trim or an upgraded lighting package. Some positions are LED assemblies while others use replaceable bulbs, and aftermarket LED conversions can change brightness, color, and compatibility. If you are replacing a bulb that has already failed, check the old bulb or remove the housing to confirm the base and shape before purchase, since small differences can matter even on the same year and model.
The 2015 Acura RLX uses LED lighting for both the high beam and low beam headlight positions on this page. Because the headlamp setup is LED, the service approach may differ from a standard halogen bulb replacement.
Yes. The brake light bulb position is listed as LED for the 2015 Acura RLX. That means the brake light may be part of an LED lamp assembly rather than a simple replaceable filament bulb.
The back up reverse light bulb is listed as 921. If one reverse light is out, it is a good idea to check both sides and confirm the socket condition before installing a new bulb.
The license plate light bulb is listed as LED. If you are replacing the license plate lights, make sure the replacement matches the factory LED setup and fits the housing correctly.
No. The front turn signal light bulb is listed as 1157A, while the rear turn signal light bulb is listed as 7440. Always match the bulb to the exact lighting position, since the bases are different.
The parking light bulb is listed as 1157A. Because the same bulb type is also used for the front turn signal position on this page, it is important to confirm the socket location before ordering.
The front side marker light bulb is listed as 168NA. This is a separate fitment from the rear side marker light, so do not assume both positions use the same bulb.
The rear side marker light bulb is listed as LED. On this page, the rear side marker is not shown as a standard replaceable bulb size, so it may be part of an LED assembly.
Interior positions listed on this page include glove box light, dome light, map light, stepwell light, interior door light, trunk or cargo area light, and vanity mirror light. The trunk or cargo area light uses 168 or 917, the interior door light uses 158, and the vanity mirror light uses 24; several other interior positions are listed as LED.
Some positions on the RLX already use LED, while others use replaceable bulbs that owners sometimes convert to LED. If you plan an aftermarket LED conversion, check fitment, polarity, heat management, and local lighting rules before buying.
Checking the installed bulb helps confirm the exact base, length, and connector style, which is especially useful on the 2015 Acura RLX because trim and lighting packages can vary. This step reduces the chance of ordering the wrong bulb for a specific lamp position.
Yes. Trim and lighting package can vary by market and body style, so the exact bulb setup may not be identical on every 2015 Acura RLX. Verifying the bulb by position and checking the vehicle’s installed parts is the safest way to confirm fitment.
