P0513 Lexus Incorrect Immobilizer Key

P0513 Lexus Incorrect Immobilizer Key

Possible causes
– Deterrent key not programmed to vheicle
– Faulty Deterrent key
– Fualty ignition switch
– Poor electrical connection for Deterrent circuit components
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– No or hard engine start situation
P0513 Lexus Description

The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and the Body Control Module (BCM) are integral part of the vehicle theft deterrent system. The theft deterrent system authenticates the security code programmed into each of these modules to prevent unauthorized vehicle operation. This authentication process includes the following steps:

1.When the ignition is turned ON or the door is unlocked by remote key the BCM and the key exchange security data to verify the correct key is used.

2.Once the correct key has been confirmed and the ignition is turned ON, the PIM and BCM exchange data to confirm the correct BCM and PIM is being used.

3.Once the correct key, BCM, and PIM is confirmed, the PIM and ECM exchange data to allow the vehicle to start.

4.The data exchange processes conducted use various encrypted data exchanges between each of the devices.

Lexus Vehicle:Lexus ES,Lexus GS,Lexus GX,Lexus HS,Lexus IS,Lexus LFA,Lexus LS,Lexus LX,Lexus RX,Lexus RX,Lexus SC,Lexus GS350,Lexus GS450H,Lexus IS250,Lexus GX460,Lexus IS350,Lexus LS460,Lexus LS600H,Lexus LX570,Lexus RX350
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