2005 lexus ls 430 doesn't lock automatically when startin...

Hello and thank you for using JustAnswer. My name is \*\*\*\*\* \*\*\*\*\* I will do my best to assist you. During this conversation you will be given an automated offer for a phone call. You may accept or decline that offer.I don’t personally offer this service so if you take this another tech may call I’m sorry that you’re having trouble with your vehicle. I will do my best to help you resolve them. Please understand that I do not know your knowledge or capabilities so I may need to ask questions to find out basic information to help solve your specific problem. My aim is to give you the best service possible and to help you. If you have any questions or concerns, please don’t hesitate to let me know. Sometimes it may take a moment for me to respond because I may have to look up information about your concern. I appreciate your patience and will provide responses as soon as possible. Ok, possible causes are the steering lock ecu, theft deterrent module, gateway module or driver door ecu The steering lock ecu sends a signal to the theft deterrent module when it is shifted out of park. The theft deterrent module then sends a signal to the gateway module and from there to the driver door ecu to lock the doors. These signals are sent along what Lexus calls BEAN lines which are computer data lines that sends multiple signals from different circuits at the same time. Unfortunately this means that you cannot simply test for voltage. A dealer level scan tool is required to test each component on this circuit to determine which is faulty Thanks for using Just Answer and letting me help you. I hope I provided what you needed. If you find more help is still needed, let me know by listing out any remaining questions you have on this concern. I hope the remainder of your day is well.