I guess you own a Toyota car or are working on one and that is why you have landed on this page. If that is the case, then the contents of this article will suit your needs.
For owners of Toyota cars who have lost their Toyota master key, you’ll be informed on how to program your Toyota key without a master.
This process requires some knowledge of technology as no physical key is needed. It can be described as means that enables the owner of the car to unlock the car electronically.
Meanwhile, it is a no-brainer that the master key of a car is the one that has been programmed and designed to enable the ignition of the car, and once it is misplaced, gaining entry becomes almost impossible.
Before you proceed and put the information here to good use, you should know that you can skip this programming process.
READ: Tire Leaking Air Around Rim? – How To Fix It
You can easily opt for a call to your car dealership and ask for a new master key, effectively erasing the previous old locking system. However, if your aim is to program your Toyota key without master, then read on.
How to Program Toyota Key without Master
Although there is the existing position that makes the programming possible, you can easily avoid this process by keeping your Toyota master key in a safe place or even having more than one for keeps.
We will be looking at two ways that this can be done and find below the steps that you should follow
Step 1
Ensure that the EEPROM is removed
Start by disconnecting the Toyota battery’s negative terminal and opening the glove compartment of the car to gain access to the ECU.
Use a socket wrench to unscrew the two nuts that are holding it. This will allow you to open the ECU with ease and find the IC900.
It is usually marked and is an 8-pin surface that can be found on the 93C56 EEPROM. Now we go to the next step after getting access to the IC900.
Connect the EEPROM to a PC
I’m guessing that this process won’t be possible with all PC. Do well to get one that has the specifications to carry out this process.
Connect the EEPROM with a reader with the aid of soldering wires to every leg via a chip clip. Once this step is completed, connect the reader to the PC.
READ: How To Put Air In Tires Without Gauge
Program the Toyota key
This is possible with the aid of software called PonyPrag which should be installed on the PC if it has the system requirements to run the app.
- Launch the app
- Go to options and select Setup
- Choose SI Prog I/O, COM1
- Tap the Probe option (This action ensures that the communication between the software and the EEPROM chip is established)
After these steps are completed, choose the option ’93C56 MicroWire EEPROM’ and click ‘Read Device”. This action results in the receipt of the contents of the EEPROM in hex code form. It is advisable to go nowhere near the lockout named ‘FB DF 5A 68.
Change the virgin keys that have the value ’10’ to ’00’ to put the software in auto programming mode.
Override all the codes with 0 and choose the second icon from the left to enable you to write on the EEPROM device key.
This should result in a popup notification that indicates the success of the operation. If this is the case, disconnect everything.
Take back the ECU to the car
Do well to return the ECU to its designated location in the car.
READ: How To Reset A Power Steering Assist Fault
Program The New Toyota Key
Remember that you disconnected the battery terminal of your car at the start. Therefore, you will have to reconnect the battery terminal and quickly insert the key into the ignition cylinder and remove it immediately.
This will light up the security key. After this step. insert the first transponder key into the ignition lock and wait for about 5 seconds. Do not turn until the security light starts to blink.
Remove the key from the ignition once the security light blinks and do this for a second time. The security light remaining ON means that you are still in programming mode.
Carry out the procedure for the third time. After the third time, the security light will go off for a while and starts blinking repeatedly. Do well to wat for a further 30 seconds to end the cycle of the programming mode.
Step 2
This is another way to program a Toyota key without a master and this process requires thorough attention to detail.
1. First off, ensure that the driver’s door is open while the two passenger doors are closed. This should be the case if the key is in the ignition switch.
2. Remove the key from the ignition cylinder, insert the key once more, pull it out two more times and this should be done within 5 seconds. Quick hands and fingers will come in handy here.
3. After it is done, close and open the driver’s door two times, insert the key into the ignition switch and pull it out this should be done within 40 seconds of starting the car.
4. The next 40 seconds should be for closing and opening the driver’s door twice, and placing the car key in the ignition switch. However, during this time, sit in the passenger area and don’t go out of the car.
READ: The 11 major parts of a Car Starter
5. Close the door, turn the key in the ignition but don’t start the car yet. Now, turn the key to the OFF position and remove the key from the ignition switch to ensure that the process is completed.
6. After these steps, the power door locks should automatically lock and unlock and this will be within three seconds of being turned ON. This is a pointer that you have successfully gained access to the programming mode of operation.
7. Use the next 40 seconds to press the lock and unlock buttons on the remote of the key simultaneously for just 1.5 seconds. Release your hold on the buttons and press the lock button again for two seconds at most.
8. If the door locks automatically lock and unlock in the next three seconds, then you’ve completed the task successfully.
Meanwhile, this second process is only applicable to some Toyota models and some of them are listed below.
- (2003-2008) Avalon, Corolla, and Matrix
- (2004-2008) Sienna and Solara
- (2005-2006) 4Runner
- (2005-2006) Sequoia
- (2001-2005)ECHO
- (2001-2007) Highlander
- (2001-2008) RAV4
- (2002-2006) Camry
- (2005-2008) Tacoma
- (2007-2008) FJ Cruiser and Yaris
- (2004-2006) Tundra
- (2000-2005) Celica
- (2001-2003) Prius
READ: How to jump start a car the right way in 2022
Conclusion
It is advisable not to carry out these processes if you don’t have reasonable knowledge of software and electronics.
This is to avoid further complications that may arise from a misconfiguration that would result in expenses that were not envisaged. Regardless, if you understand a little tech and software processes, then one of the above steps could suffice.