Posted on 10/03/2025 by Alla Lighting
Table of Contents
Ready to upgrade your old halogen bulbs? Learn how to replace and complete the installation for LED bulbs. Easy installation and tips!
The halogen exterior bulbs may be too dim in your 2016-2023 Toyota Prius, which can make vision difficult, especially in bad weather or severe driving conditions. Upgrading the old halogen bulbs on your 2016-2023 Toyota Prius with new aftermarket LED bulbs can add a great new look to your vehicle and improve visibility at night for a safer driving experience.
If you choose to upgrade your old halogen bulbs to new LED bulbs, it is best to confirm you have the correct replacement LED bulb by referring to the original bulb or the 2016-2023 Toyota Prius direct owner’s manual.
We will show you how to install your new ALLA Lighting LED bulbs for your rear turn signal light application.
Bulb sizes for the 2016-2023 Toyota Prius rear turn signal light bulb is # 7440
The rear turn signal lights are in the rear light assembly, beginning by opening the trunk.
This plastic cover is held on by several clips, insert your trim tool into the outer edge and pry it open.
With those four clips free, hold the cover and pull it towards the back of the car then lift it up to remove it.
We highlight here the seven clips that hold it in.
Use your 10 mm wrench to remove the two bolts.Â
Apply tape to the light housing and pull it back to pull out the remaining clips.
We highlight the clips in the assembly and where they attach to the car.
Pull the signal wires from the clip on the assembly.
Remove the turn signal light socket by turning it counterclockwise.
Pull out the incandescent bulb.
Replace it with the LED and test it.
Line up the notches on the socket with the slots in the housing.
Insert the bulb into the housing and turn it clockwise to lock it.
Push the wires back into the wire holder.
Line up the clips on the assembly and push it forward to lock the clips in.
Replace the 10 mm bolts and tighten.
Line up the inside clips on the plastic cover and push it in, then push the outside of the cover into place.
Now repeat those steps on the other side.
These new Alla Lighting LED turn signals are much brighter than the incandescent bulbs. These will greatly improve visibility of your car when the turn signal is engaged.
Check out our Step by Step installation video!
Congratulations! Your LED rear turn signal lights installation is now complete in your 2016-2023 Toyota Prius. If you experienced any issues during your installation and unable to complete installation, please contact us for assistance. If the LED bulbs are experiencing hyper-flashing, flickering, an error code issues, then load resistors for this application will be required to be installed. These issues can occur due to the LEDs low current nature, which draws much less current than original stock halogen bulbs.
Please feel free to contact us at service@allalighting.com for assistance. Our team of highly trained representatives will be available to assist and provide the best solution. May also visit us at www.allalighting.comÂ
Looking for more LED upgrades for your 2016-2023 Toyota Prius. Check out the below bulb guide! For your reference only. All information below is not 100% guaranteed accurate. Please confirm the original bulb part numbers by referring to the original bulb or the vehicle’s direct owner’s manual prior to purchase.
Front Exterior Lights
Front Daytime Running Light. Stock #: LED
Front Sidemarker Light Bulb. Stock #: LED
Front Turn Signal Light Bulb. Stock #: 7440NA
High Beam Headlight Bulb. Stock #: LED
Low Beam Headlight Bulb. Stock #: LED
Rear Exterior Lights
Back Up Light Bulb. Stock #: 921
Brake Light Bulb. Stock #: LED
Center High Mount Stop Light Bulb. Stock #: LEDÂ
License Plate Light Bulb. Stock #: LED
Parking Light Bulb. Stock #: 7444NA
Rear Sidemarker Light Bulb. Stock #: 168
Rear Turn Signal Light Bulb. Stock #: 7440NA
Tail Light Bulb. Stock #: LED
Interior Lights
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