Where is the transponder on an engine immobilizer?
The engine immobilizer and key transponder are actually two different components. The engine immobilizer receiver is usually located in your vehicle’s steering column, close to the ignition. The transponder key is attached to your physical key fob.
Why is the transponder ECU under the dash?
The reason for separating the Transponder ECU with the EEPROM storing the keys is that in the invent of lost keys, it would be cheaper for a dealership to replace the Transponder ECU than the Engine Control Unit. However its location under the dash means you will have to remove the entire dash pad.
Is there a problem with the transponder key?
While problems unlocking or locking your car points directly to the key transponder, problems getting your vehicle started could be either the engine immobilizer or the key transponder. If there is a problem with the immobilizer or the transponder key, you will most likely notice that your car will start up for 2-3 seconds but then turn off again.
Where is the transponder key on a push start car?
The transponder key is attached to your physical key fob. If you’re driving a vehicle with a push start, the transponder key is part of the electronic key you need to keep with you when you start your car.
The engine immobilizer and key transponder are actually two different components. The engine immobilizer receiver is usually located in your vehicle’s steering column, close to the ignition. The transponder key is attached to your physical key fob.
Where is the transponder ECU on a Toyota?
The amplifier then decrypts it and sends it to the ECU. Inside the ECU is a 93C56 EEPROM chip (IC900) that stores the key values. If the key code matches the stored values, the engine will start. On newer Toyota and Lexus vehicles, the transponder ECU is a separate unit and it’s housed under the dashboard.
What does the transponder key do on a hybrid car?
The transponder key ECU manages communication with the hybrid vehicle control ECU and power source control ECU. When the ID codes of the transponder chip and transponder key ECU match, the transponder key ECU authorizes the starting of the hybrid control system.
While problems unlocking or locking your car points directly to the key transponder, problems getting your vehicle started could be either the engine immobilizer or the key transponder. If there is a problem with the immobilizer or the transponder key, you will most likely notice that your car will start up for 2-3 seconds but then turn off again.