2021 Toyota Corolla, Keyless Entry Wiring
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=147636
Printed Date: May 09, 2025 at 11:53 AM
Topic: 2021 Toyota Corolla, Keyless Entry Wiring
Posted By: keith parnell
Subject: 2021 Toyota Corolla, Keyless Entry Wiring
Date Posted: April 05, 2023 at 3:31 PM
Need Toyota Corolla 2021 wiring info to install keyless entry
Replies:
Posted By: kreg357
Date Posted: April 08, 2023 at 5:23 PM
Not sure what aftermarket RKE system you are using or the exact model of Corolla but... Don't have the info on a 2021 but here is the basic info on a 2020 Corolla, regular "H" key sedan. 2020 and 2021 are probably the same.
OEM Alarm Arm GREEN(-) DASH FUSE BOX,BLK 21 PIN , PIN 18
OEM Alarm Disarm PURPLE(-)DASH FUSE BOX ,BLK 21 PIN , PIN 17
Trunk Release PINK (REVERSE) DASH FUSE BOX , WHITE 36 PIN , PIN 20
Parking Lamp (+) BLUE DASH FUSE BOX, WHITE 36 PIN , PIN 30
Parking Lamp (-) GREEN HEADLIGHT SWITCH , WHITE 40 PIN ,PIN 3
Horn BLUE (-) OR PURPLE(-) DASH FUSE BOX , WHITE 32PIN,PIN 27 OR STEERING COLUMN BLK 14 PIN PIN 7
Constant 12 volts DASH FUSE BOX WHITE 1 PIN CONNECTOR
Ignition #1 BLACK IGNITION SWITCH ,WHITE 8 PIN , PIN 8
Accessory #1 RED(+) IGNITION SWITCH , WHITE 8 PIN , PIN 6
Use the Arm and Disarm wires to do both lock & arm, unlock & disarm. You will need a relay to do the trunk release as it is a 5-Wire reverse situation.
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Soldering is fun!
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