Having trouble with your 2007 Lexus Is350 Key Fob? Many owners face the daunting prospect of expensive dealership reprogramming services when they need a replacement or want to program a used key fob. In fact, like many others, you might have been told by Lexus directly that programming a used key fob is simply not possible. However, don’t lose hope just yet! This guide provides a step-by-step approach to successfully program a used key fob for your 2007 Lexus IS350, potentially saving you significant money and time. This DIY method leverages readily available tools and software, making it accessible for car owners who are comfortable with a bit of tech and hands-on work.
What You’ll Need to Program Your Lexus IS350 Key Fob
Before you begin, gather the necessary equipment. This process requires specific tools to interface with your Lexus’s onboard computer system. Here’s what you will need:
- Laptop Running Windows 10 (64bit): This will host the necessary software.
- TechStream Software: This is the diagnostic software used by Toyota and Lexus dealerships. You’ll need to have this installed on your laptop.
- Mini VCI Cable: This cable connects your laptop to your vehicle’s OBD-II port. A reliable option is similar to this Mini VCI cable.
- Used Key Fob: Obtain a used key fob from a reputable source, like a salvage yard. Crucially, ensure that the digit on the circuit board of the used fob matches your existing working key fob. Replace the battery in the used key fob with a new one.
- Token Service for Passcode Calculation: You will need tokens from a service like WebOctopus Passcode Calculator to calculate the security passcode required for programming.
Step-by-Step Guide to Program Your 2007 Lexus IS350 Key Fob
Now, let’s get into the programming process. Follow these steps carefully:
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Connect the VCI Cable: Plug the Mini VCI cable into your Lexus IS350’s OBD-II port and connect the other end to your laptop. Turn your vehicle’s ignition to the “ON” position (engine can be off, but accessories should be powered).
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Initiate Smart Key Reset: Open the TechStream software on your laptop and connect to your vehicle. Navigate to the immobilizer/smart key settings. Use the “Smart key reset” feature within Techstream. Other methods within Techstream for adding keys might not be effective when using a used key fob. The process is visually similar to the steps shown in this video: Techstream Immo Reset SmartKey Patch from Autokent – YouTube. Note that unlike the video, you will not be using a patch to bypass the passcode.
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Obtain Passcode: Utilize the token service mentioned earlier (WebOctopus). Enter your VIN (Vehicle Identification Number) and the seed code obtained from Techstream into the passcode calculator to generate the required passcode.
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Perform Reset and Wait: In Techstream, proceed with the smart key reset process. Enter the passcode when prompted. This reset procedure can take approximately 16 minutes. It’s advisable to keep your car idling during this time to maintain consistent battery voltage.
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Add Key Using Techstream: After the reset is complete, use the “add key” function in Techstream. Select the option indicating that you are “registering keys and have replaced the ID Code Box and Smart ECU or have performed Smart Code Reset”.
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Register Keys: Follow the on-screen prompts in Techstream. When adding keys, it’s crucial to add the used key fob first. When prompted to present each key fob, ensure that the fobs not being registered are at least 1.5 meters (approximately 5 feet) away from the vehicle to prevent signal interference during the registration process.
By following these steps, you should be able to successfully program a used key fob for your 2007 Lexus IS350. This DIY approach offers a viable alternative to expensive dealership services.
Disclaimer: This information is provided for educational purposes only. Attempting these steps is at your own risk. We are not responsible for any issues or damage that may arise from following this guide.
If you’re looking to try this method and need tokens for the passcode calculator, the original poster of this method mentioned having a few tokens available for sale. This could be an option if you want to avoid purchasing a larger quantity of tokens yourself.
