Assalamu Alaikum, readers of The Auto Pulse! Today we have a Toyota Corolla (2019 Model). We are going to program a new key for this car.
Many people get confused because Toyota keys have two parts: the Transponder Chip (which allows the engine to start) and the Wireless Remote (which locks/unlocks the doors). These must be programmed separately.
In this guide, I will show you how to register both the Immobilizer and the Remote using a diagnostic tool (Techstream or Launch). Watch the full procedure below.
1. Health Check (Important!)
Before starting any programming, always perform a Health Check on the vehicle. If there are any error codes (DTCs) in the system, the programming might fail or get stuck. Clear all codes before proceeding.
2. Programming the Immobilizer (Chip)
This step registers the key to the engine computer so the car can start. Go to Immobilizer System > Utility > Transponder Code Registration.
- Insert the OLD (Master) Key and turn Ignition ON. Click Next.
- Remove the Old Key.
- Insert the NEW Key (Do NOT turn ignition on). Click Next.
- Wait for the progress bar to complete.
How to Verify: Look at the Security Light on the dashboard. When you insert the new key, the blinking security light should stop blinking immediately. This confirms the chip is registered.
3. Programming the Wireless Remote
Just because the car starts doesn't mean the buttons work. You must register the remote separately. Go to Main Body > Utility > Wireless Code Registration.
Pre-Requisites:
- Ignition must be ON.
- Driver door must be Open and Unlocked.
- All other doors must be Closed.
When the software asks, you must perform this on the remote within 30 seconds:
- Press LOCK and UNLOCK buttons together for 1 second.
- Release, then immediately press LOCK (or Unlock) button once for 1 second.
If successful, the car door locks will cycle (lock/unlock) automatically to confirm registration. If they cycle twice, it means it failed—try again.
By following these two separate procedures, you can fully program a Toyota Corolla key. If you found this guide helpful, please subscribe to our channel!
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