If you own a Jaguar in Chicago and have ever lost a key or needed a spare fob, you may already know that unfortunately Jaguar replacement fobs are among most expensive in the automotive industry. Jaguar uses some of the most advanced automotive security systems on the road, and understanding the different immobilizer generations and key types can save you time, money, and stress.
This guide explains how Jaguar immobilizer systems evolved, what types of keys and smart fobs are used, and why Secure Locks Chicago automotive locksmiths is the best common sense option for your Jaguar replacement fobs.
WHAT IS A JAGUAR IMMOBILIZER?
A Jaguar immobilizer is an electronic anti-theft system designed to prevent the engine from starting unless a properly programmed key or smart fob is present. The immobilizer communicates with multiple vehicle modules, such as the Body Control Module (BCM), Engine Control Module (ECM), Remote Fuction Actuator (RFA) hub..
If the system does not recognize the correct encrypted signal from the key or fob, the vehicle will remain immobilized—even if the mechanical key physically turns.
JAGUAR IMMOBILIZER GENERATION 1
These early systems use a basic RFID transponder chip embedded in the key head. When the key is inserted into the ignition, the vehicle checks the transponder code before allowing the engine to start.
Early Transponder Key Systems (1990s–Early 2000s)
Key Type: Mechanical key with transponder chip
Common Models:
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Jaguar XJ (X300 / early X308)
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Jaguar XK8
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Jaguar S-Type (early models)
JAGUAR IMMOBILIZER GENERATION 2
This generation combines the remote locking functions and immobilizer transponder into a single key unit. Programming requires synchronization between the key, immobilizer module, and vehicle electronics.
Integrated Remote & Transponder Keys (Early–Mid 2000s)
Key Type: Remote key with built-in transponder
Common Models:
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Jaguar S-Type
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Jaguar X-Type
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Jaguar XJ (X308 / early X350)
JAGUAR IMMOBILIZER GENERATION 3
With this generation, Jaguar introduced keyless entry and push-button start. The vehicle wirelessly authenticates the smart key when it is inside the cabin, allowing the engine to start without inserting a key.
Smart Keys & Keyless Entry Systems (2008–2015)
Key Type: Proximity smart key
Common Models:
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Jaguar XF
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Jaguar XK (X150)
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Jaguar XJ (X351)
JAGUAR IMMOBILIZER GENERATION 4
Encrypted Smart Fobs & Secure Gateway Systems (2016–Present)
Key Type: Fully encrypted proximity smart fob
Common Models:
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Jaguar XE
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Jaguar XF (newer generations)
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Jaguar F-PACE
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Jaguar E-PACE
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Jaguar I-PACE
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Jaguar F-TYPE (late models)
CURRENT SECURE LOCKS JAGUAR COVERAGE
Secure Locks currecnty program fobs for following generation Land Rover immobilizer systems:
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Generation 3 (first generation proximity push to start system)
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Generation 4 (second generation proximity push to start system)
Secure Locks currently does not provide coverage for older generation key turn Jaguar immobilizer systems.
JAGUAR REPLACEMENT FOB DEALER COST
A standard proximity Jaguar replacement fob cost consists of following components:
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a transmitter (i.e. proximity remote; fob; key fob) is required in order for engine to start and allow driving of your Jaguar
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an emergency blade that allows you to unlock your vehicle by inserting an emergency blade inside the door lock and turning it manually in case of a total loss of power of your vehicle or a key fob.
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labor or programming charge - a scanner or programming software is used to program a new fob to your vehicle. In all-keys-lost scenario, a replacement labor cost is required to install a replacement RFA hub
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In an all-keys-lost situation, you will be required to have your vehicle towed to a Jaguar dealership. A replacement Remote Function Actuator (RFA hub), a minimum of two new replacement fobs, as well as labor, programming, and diagnostics will be required.
Adding all the components above and the most common push to start Jaguar spare fob may easily reach $800 at Jaguar dealer. Meantime, the cost for a spare fob In a all-keys-lost situation, Jaguar requires a vehicle tow to a dealer, a replacement Remote Function Actuator (RFA hub) replacement, a minimum of two new replacement fobs, and cost for labor, programming, and diagnostics. Total cost may go up to a staggering $4-5k.
SECURE LOCKS JAGUAR REPLACEMENT FOB COST AND CONVENIENCE
We are pleased to inform you that Secure Locks offers full mobile push to start Jaguar fob service. There are two main reasons why using Secure Locks is a far superior option compared to a Jaguar dealer:
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Cost. Secure Locks provides exactly the same Jaguar fob replacement as the dealer at a far lower cost than what the Jaguar dealer charges; in many cases up to 30-50% less. What is even more important - Secure Locks does not require a Remote Function Actuator (RFA hub) replacement or a minimum of two fob purchase in all-key-lost situations. This crucial feature alone will save thousands of dollars compared to your local Jaguar dealer.
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Convenience. Secure Locks offers a fully mobile service to the location of your vehicle for your convenience. There is no need for you to waste your time driving to the dealer and waiting there for at least an hour. Also, we will do our absolute best to accommodate your schedule as soon as possible. We usually have a technician available same or the following day at the latest. More importantly, in a lost-all-key scenario you are not required to have your vehicle towed, our technician will come to the location of your vehicle
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Reliability. Secure Locks offers a high quality OEM and aftermarket Jaguar key fobs. Also, we offer a 90-day warranty on all our products while your local Jaguar dealer offers no warranty.
FINAL THOUGHTS: JAGUAR REPLACEMENT FOBS IN CHICAGOLAND AND SUBURBS
From early transponder keys to today’s encrypted smart fobs, Jaguar immobilizer systems are built for maximum security. While this protects your vehicle, it also means that key replacement and programming require a skilled and professional approach. Secure Locks proudly offers most cost effective, convenient, and reliable Jaguar replacement fob service in Chicagoland and suburbs.
Please contact Secure Locks for additional questions or to schedule an appointment today.

