2001-2003 Toyota Prius Transponder Key Programming by module

👑 2001–2003 Toyota Prius Immobilizer Reflash Service

Generation 1 EEPROM Programming & All Keys Lost Recovery – Mail-In Service

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✨ SERVICE OVERVIEW For the first-generation Prius, losing all keys is a major challenge because the vehicle’s security system cannot be programmed through the OBD2 port once all master keys are missing. While dealerships often recommend replacing the entire Immobilizer ECU (costing over $1,000), our specialized mail-in service allows us to reflash your existing module and provide brand-new master keys at a fraction of the cost.

• Master Key Restoration: We program high-quality 4C Transponder master keys directly into your module's memory, converting your system back to "Master" status so you can easily add spare keys in the future.

• EEPROM Reflashing: Our technicians safely access the internal chip to reset the "All Keys Lost" state.

• Precision Cutting: Keys are professionally cut to match your vehicle's locks.

• Plug & Play: Once you receive the module back, simply plug it in and start the car—no further programming is required.

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🚘 VERIFIED VEHICLE COMPATIBILITY This service strictly covers the following Generation 1 model using the 4C "Fixed Code" glass chip (Note: 2004 and newer models utilize a different system):

• Toyota Prius: 2001 – 2003

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🛠️ SERVICE REQUIREMENTS & AUTHORIZATION

• Module Requirement: You must remove and mail us your vehicle's Immobilizer ECU (Key Transponder ECU)—a small black plastic box located under the driver’s side dashboard, typically near the steering column (look for part numbers starting with 89780-XXXXX).

• Key / All Keys Lost Solution: If you are facing an "All Keys Lost" scenario and do not have a factory key code or working key to copy, you must also mail in your physical driver's door lock cylinder so we can mechanically originate and cut the new key blade.

• Mandatory Documentation: Your package must include a clear photocopy of the vehicle owner's valid Driver's License and Vehicle Registration.

• Mandatory Authorization: To perform any lock-based cutting or module-based programming, we require a signed copy of our [Authorization Form].

• Next Steps: Click the link above to download the form. Print, fill, and sign it (along with including your Name, VIN, Return Address, and Phone Number) then include it inside your package alongside your identification or email a high-quality scan to sales@paylesscarkeys.com.

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📍 MAIL-IN INSTRUCTIONS & SHIPPING

• Mailing Address: Payless Car Keys Attn: Mail-In Dept. 2035 Victory Blvd Staten Island, NY 10314

• Packaging Guidelines: Use a padded box or bubble mailer. Ensure the ECU pins are protected and cannot be bent during transit. We strongly recommend using a shipping service with tracking (USPS Priority, UPS, or FedEx).

• Turnaround: Most modules are processed and shipped back within 24–48 hours of arrival.

• Return Shipping: Please provide your return shipping address clearly with your order.

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📞 CONTACT INFORMATION

• Call or Text: (718) 907-3000

• Email: sales@paylesscarkeys.com

• Website: www.paylesscarkeys.com

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👨‍🔧 TECHNICIAN DIAGNOSTIC DATA (Internal Shop Use Only)

• System Architecture: Generation 1 Toyota Prius Immobilizer ECU / EEPROM

• Transponder Chip: 4C Fixed Code (Glass Chip)

• Required Hardware: Immobilizer ECU (Mandatory). Driver's door lock cylinder (Required for All Keys Lost if no key code is available).

• Service Output: EEPROM reflash, All Keys Lost recovery, and master key synchronization.

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