1-4 DAYS DELIVERY
Bypass Essentials 556UW Universal Bypass Allows remote start in vehicles equipped with a transponder or radio-frequency based immobilizer
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Bypass Essentials 556UW Universal Bypass
Allows remote start in vehicles equipped with a transponder or radio-frequency based immobilizer
About the Bypass Essentials 556UW Universal Bypass
Bypass Essentials modules work with your vehicle's anti-theft system to incorporate the convenience, security and luxury features of your Python alarm system.
Universal bypass modules work with any vehicle using an "immobilizer" key system, allowing you to remote start your car without disrupting factory-installed anti-theft features.
Use the 556U universal bypass in vehicles equipped with a transponder or RF-based immobilizer, such as those found in many late-model GM vehicles. The compact module is tunable for European or domestic vehicles and features tamper-resistant circuitry.
Important Note: One of your car's transponder keys will be permanently installed in the 556U module. You can buy an extra key through your dealer and have it programmed to work with your car's immobilizer. Ask your dealer if keys can be programmed individually — some vehicle manufacturers require that all keys be reprogrammed at one time.
Product highlights:
- universal bypass for Python alarm systems
- compatible with any factory RF immobilizer or transponder system, including GM Passkey3
- temporarily overrides the factory immobilizer
- maintains integrity of factory anti-theft system
- kit can be tuned for use with European or domestic vehicles
- supplied harnesses splice into factory wiring
- requires permanent key mount (into compact module)
What's in the box:
Bypass Essentials 556UW Universal Bypass owner's manual
- Universal remote start interface module
- 6-Pin harness
- 3-Pin harness
- Instructions sheet
30-Day Return Policy
At Fuego Bass Shop, we want you to be fully satisfied with your purchase. You can return most products within 30 days of delivery for a refund or exchange.
Please note: Any returns with physical damage or missing original packaging may incur a deduction.
Restocking Fee: A 15% restocking fee will be deducted from your refund to cover handling and restocking.
Refunds will be processed to your original payment method within 5–7 business days after we receive and inspect the returned item.
We ship within the United States (excludes recipients in Alaska, Hawaii, Puerto Rico, U.S. Virgin Islands, and Guam).
At Fuego Bass Shop, we understand the thrill of receiving your car audio equipment quickly. Our shipping process is designed to ensure your order arrives safe, fast, and ready to pump bass.
Most orders are processed within 1–2 business days. Standard shipping usually takes 3–7 business days depending on your location. Expedited shipping is available for select items during checkout.
Once your order is shipped, you will receive a tracking number via email so you can follow your gear every step of the way. Our packaging is designed to protect high-performance audio equipment from bumps, vibrations, and shocks during transit.
Please note: Delivery times may vary during holidays, promotions, or due to carrier delays. We highly recommend verifying your shipping address before completing checkout to avoid delays.
If you have any questions about your shipment or need assistance, our support team is ready to help. We want your experience with Fuego Bass Shop to be as powerful and smooth as our bass systems!

