Posted on 03/05/2026 by Alla Lighting
Table of Contents
Ready to upgrade your old halogen bulbs? Learn how to replace and complete the installation for LED light bulbs. Easy installation and tips!
The halogen exterior bulbs may be too dim in your 2020-2023 Toyota Corolla, which can make vision difficult, especially in bad weather or severe driving conditions. Upgrading the old halogen bulbs on your 2020-2023 Toyota Corolla 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 vehicle’s direct owner’s manual.
We will show you how to install your new ALLA Lighting LED bulbs for your rear side marker lights bulbs.
Bulb sizes for the 2020-2023 Toyota Corolla rear side marker lights bulbs is # 168
Begin by opening the trunk on your2020-2023 Toyota Corolla.
There’s a plastic cover we’ll need to remove first on the outside of the light housing.
Use your trim tool to pry free the edges
Then push the locking clips in and pry free the one side.
Pull the cover towards you and then pull it up to release the last tab. Â
We highlight here where the clips lock in.
Now use your wrench to remove the two bolts.
Push the housing front to back to free the ball and socket joint from the car.
Turn the socket counterclockwise to remove it.Â
Pull out the incandescent bulb and replace it with the LED bulb.Â
Test it and you can return the socket into the housing.Â
Line up the tabs on the socket with the housing.
Turn it clockwise to lock it.Â
Push the housing back to front to lock the ball and socket joint.Â
Replace the two bolts.Â
Slide the bottom of the plastic cover in first.Â
Push the edges in until it locks in place.
Now we can repeat those same steps for the other side.Â
The new pure red LED side marker lights look great on your 2020-2023 Toyota Corolla
Check out our Step by Step installation video!
Congratulations! Your LED Rear Side Marker Lights Bulbs installation is now complete in your 2020-2023 Toyota Corolla. 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 2020-2023 Toyota Corolla? 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.
High Beam: Stock Bulb size # LED
Daytime Running Lightt: Stock Bulb size # LED
Fog Light: Stock Bulb size # LED
Front Turn Signal Light: Stock Bulb size # LED
Front Side Marker Light: Stock Bulb size # 168
Rear Turn Light: Stock Bulb size # 7440NA
Back-Up Reverse Light: Stock Bulb size # 921
Rear Sidemarker Light Bulb: Stock Bulb size # 168
Brake Light: Stock Bulb size # LED
Tail Light: Stock Bulb size # LED
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