Not all Land Rover and Jaguar key fobs work the same way. Some require you to press a button to unlock the door; others detect your presence automatically and unlock before you even touch the handle. Understanding which system your vehicle has matters for key replacement, for understanding range and battery life, and for protecting against relay theft. This guide explains the difference between proximity keys and remote keys and tells you exactly which technology each JLR model uses.
What Is a Remote Key?
A remote key (sometimes called a button key or remote central locking key) requires you to press a button on the fob to lock or unlock the vehicle. Older Land Rover and Range Rover models used a flip-blade remote key — a folding fob where pressing the lock or unlock button sends an RF signal on the 433 MHz frequency to the vehicle’s receiver. The vehicle then actuates the door locks in response.
Remote keys also contain a transponder chip for immobiliser authentication. This chip communicates with the vehicle’s BCM or KVM each time a start is attempted, but the transponder is passive — it only responds when energised by the vehicle’s antenna field near the ignition. You can have a working remote key whose locking buttons fail while the transponder still works, or vice versa.
What Is a Proximity Key?
A proximity key (also called a passive entry key, keyless entry fob or smart key) does not require a button press for entry. The vehicle continuously broadcasts low-frequency (LF) electromagnetic fields through antennae embedded in the door handles. When the fob is carried into this detection zone — typically within 1 metre of the handle — the fob responds with its unique cryptographic code. If the code is valid, the doors unlock automatically when you touch or pull the handle.
Inside the vehicle, the same system detects the fob’s presence near the push-start button, authenticating the start sequence without inserting a key into a barrel. The proximity key also contains a traditional transponder that serves as a backup start mechanism if the LF system fails.
UWB — The Next Generation of Proximity
The latest Land Rover and Jaguar models use Ultra-Wideband (UWB) technology instead of simple LF proximity fields. UWB uses short-pulse radio signals and time-of-flight measurement across multiple antennae to determine the fob’s precise location — accurate to a few centimetres. This allows the vehicle to know not just that the fob is present but exactly which door is closest to it, enabling door-specific unlock behaviour and preventing relay attacks that work by amplifying the LF field from inside a house.
Which Key Type Does Each Model Use?
Remote Key (button press required)
The Freelander 2 (all years) and Range Rover Sport L320 (2005–2013) used flip-blade remote keys as standard. Entry-level trims of the Jaguar E-Pace also use a standard remote rather than full proximity entry. Some early Discovery 4 variants use a standard remote — proximity entry was an option, not standard fit, on some trim levels.
LF Proximity Key (touchless entry)
Standard on the Range Rover L405, Range Rover Sport L494, Range Rover Evoque (2019+), Range Rover Velar, Discovery 5, Discovery Sport (mid-spec and above), Defender L316 (top trims), and all current Jaguar models including the F-Pace, I-Pace, XE (mid and above), XF and F-Type.
UWB Proximity Key
The Defender L663 (2020+) and Range Rover L460 (2022+) use UWB proximity technology. These systems are the most secure currently available from JLR and require the latest Pathfinder software for key programming.
Proximity Key Security and Relay Theft
LF proximity keys are vulnerable to relay attacks — criminals use two devices to extend the fob’s signal from inside a house to the vehicle outside. The vehicle cannot distinguish between the real fob nearby and a relayed signal, so it unlocks and can even be started. The UK government has published guidance on keyless vehicle theft prevention. Practical measures include storing fobs in Faraday pouches, using a steering wheel lock, and fitting a tracker. Autocar provides detailed relay attack prevention advice. The RAC similarly covers how to protect keyless entry vehicles. UWB systems are not susceptible to relay attacks due to the precision of signal timing.
Does My Key Type Affect Replacement Cost or Complexity?
Proximity keys contain more electronic components than simple remote keys — the LF receiver and UWB circuitry adds complexity to the fob hardware. They are also more expensive as blank components. Programming requirements are identical (KVM-based for all modern models) but the synchronisation of proximity antennae adds a step that pure remote key programming does not require. None of this changes the mobile service model — AJ Auto carries compatible blanks for all key types and performs antenna synchronisation as part of the standard programming process. Contact us with your model, year and VIN for confirmation of your specific key type before booking.
Frequently Asked Questions
How can I tell if my Land Rover has keyless entry without checking the spec sheet?
If your vehicle’s doors unlock automatically when you approach and touch the handle — without pressing anything on the fob — you have a proximity entry system. If you need to press the unlock button before touching the handle, you have a standard remote system. You can also check whether your fob has a raised grip sensor on the back face (common on proximity fobs).
My vehicle has keyless entry but the doors no longer unlock automatically — what has changed?
Proximity detection failure is almost always caused by a low fob battery. Replace the CR2032 first. If the battery is good, check whether the issue occurs near any strong RF interference sources. If it fails in all locations with a fresh battery, a diagnostic check of the KVM and door handle antennae is required.
Can I add proximity entry to a Land Rover that only has a remote key?
Retrofitting full proximity entry requires new door handle antennae, a KVM upgrade and software changes — it is a significant modification, not a simple key swap. On most models this is not cost-effective. If passive entry is important, this is better addressed by choosing a higher-specification trim at point of purchase.
Does proximity entry drain the vehicle’s 12V battery when parked overnight?
The proximity antenna system draws a small standby current when the vehicle is parked, as the antennae periodically broadcast LF pulses to check for an approaching fob. This draw is minimal (a few milliamps) and should not drain a healthy battery overnight. However, on a vehicle parked for several weeks, cumulative standby draw can contribute to a flat 12V battery if the battery is already weak.
Will a proximity key work if the fob battery is completely flat?
A completely flat fob battery means the proximity system cannot operate. However, all JLR proximity fobs contain an emergency blade and are designed to allow a manual start: hold the fob body directly against the push-start button — the vehicle’s internal antenna energises the fob’s transponder chip inductively, allowing authentication without fob battery power. Check your owner’s manual for the exact procedure for your model.
When to go to a dealer instead
If your vehicle is still under JLR factory warranty and the fault is covered, take it to a dealer. Warranty repairs are free and no specialist can match that. If you need a recall fix, the dealer is the right call. Outside of those two situations, a mobile JLR specialist will be faster, cheaper, and will attend at your location.