Losing all keys to a modern Jaguar Land Rover is a nightmare scenario for any owner. Unlike older vehicles where a locksmith could simply cut a new blade and program a transponder, modern JLR vehicles use UWB (Ultra-Wideband) proximity keys, encrypted rolling codes, and a KVM (Keyless Vehicle Module) that is deeply integrated into the EVA2 security architecture. An all-keys-lost situation requires specialised tools, a methodical procedure, and an understanding of the vehicle's security layers. This guide provides the complete all-keys-lost workflow for JLR workshops and locksmiths.
JLR Key Types Explained
Traditional Remote Key (pre-2015)
Older JLR vehicles use a traditional remote key with an integrated transponder (Philips Crypto 2 or Texas Crypto). The key communicates with the BCM via 433 MHz or 315 MHz RF. Programming is straightforward: read the transponder, generate a precode, and write the key via the OBD-II port.
Smart Key (2015–2022)
The smart key system uses a passive keyless entry (PKE) transponder. The key does not need to be pressed to unlock the vehicle — it simply needs to be in proximity. The BCM polls for the key's presence via LF (Low Frequency) antennas in the doors and cabin, and the key responds via RF. Smart keys require KVM authorisation and cannot be cloned.
UWB Key (2022+)
The latest JLR vehicles (Defender L663, Range Rover L460, Discovery 5) use UWB (Ultra-Wideband) keys. UWB offers centimetre-accurate ranging, which prevents relay attacks. The key and vehicle perform a secure distance measurement to verify the key is physically present, not just being relayed by a hacker's device.
- Frequency: 6.5 GHz (UWB) + 433 MHz (RF backup)
- Security: AES-128 encryption with rotating keys
- Programming: Requires Pathfinder and online authorisation from JLR's security server
All-Keys-Lost Procedure
The all-keys-lost procedure varies depending on whether the vehicle has an existing key or truly has zero working keys. In a true all-keys-lost scenario, the KVM must be reset and new keys introduced from scratch.
Pre-Programming Checks
- Verify the vehicle battery is above 12.5 V and stable. Low voltage during programming can corrupt the KVM.
- Connect the JLR DOIP VCI and read the vehicle identification data (VIN, ECU software levels).
- Read all DTCs and resolve any existing communication faults. A U-code on the CAN bus will prevent key programming from completing.
- Verify that your Pathfinder or SDD subscription is active and includes security unlocks. UWB key programming requires an online security token.
- Ensure you have a compatible blank key with the correct part number for the vehicle model and year.
Step-by-Step All-Keys-Lost
- Enter Key Programming Mode: In Pathfinder, navigate to Security > Key Programming > All Keys Lost. The system will prompt you to confirm the VIN and the number of keys to be programmed.
- Reset KVM: Pathfinder will send a security request to the JLR server to authorise a KVM reset. This step requires an active internet connection and a valid subscription. The reset wipes all existing key slots.
- Program First Key: Place the first blank key in the centre console or glovebox (the exact location varies by model — follow the on-screen instructions). Pathfinder will write the key's unique ID to the KVM and pair it with the vehicle's security keys.
- Program Additional Keys: Repeat the process for each additional key. Most JLR vehicles support up to 5 keys.
- Verify Function: Test each key for lock, unlock, passive entry, and start functionality. For UWB keys, verify that the key works at different distances to confirm the UWB ranging is calibrated.
- Clear DTCs and Exit: After all keys are programmed, clear any DTCs generated during the process and exit programming mode.
Never interrupt the key programming process once it has started. If the KVM is left in a partially programmed state, the vehicle may not start with any key and will require bench recovery of the KVM module.
UWB Key Programming
UWB key programming is more complex than older RF systems because it involves both UWB pairing and RF backup pairing. The procedure is only supported on Pathfinder (MY2017+ vehicles).
UWB-Specific Steps
- The blank UWB key must be pre-coded with the vehicle's VIN before it can be accepted. This is done by the key supplier or by JLR directly. Un-coded keys cannot be programmed.
- During programming, the vehicle and key perform a UWB "ranging calibration". The key must be moved to specific distances from the vehicle (e.g., 1 metre, 2 metres) so the system can learn the UWB propagation characteristics.
- If the UWB calibration fails, the key may still work as an RF-only key (lock/unlock and start), but passive entry will not function correctly. The driver may need to press the key button to unlock.
- After programming, test the key at the front, rear, and sides of the vehicle to confirm the LF antenna coverage is correct.
Smart Key Learning
For smart keys on pre-UWB vehicles (MY2015–2022), the procedure is similar but does not require UWB calibration:
- Enter Key Programming Mode in Pathfinder or SDD.
- Select "Add Key" or "All Keys Lost" depending on the situation.
- Place the key in the specified location (usually the centre console or glovebox).
- Pathfinder will write the key ID to the KVM. The process takes 30–60 seconds per key.
- Test the key for passive entry (approach the vehicle without pressing the button) and start functionality.
Emergency Key Access
Every JLR smart key contains a physical blade key hidden inside the fob. This blade can be used to unlock the driver's door manually if the electronic systems fail. However, it cannot start the engine on vehicles with a push-button start — the transponder inside the key must be recognised by the immobiliser coil around the start button.
To start the vehicle with a failing key:
- Hold the key fob directly against the start button (or the designated emergency location specified in the owner's manual).
- This places the transponder close enough to the immobiliser coil for a weak signal to be read.
- Press the brake and the start button simultaneously.
If this fails, the key's transponder battery may be dead, or the immobiliser coil may be faulty. The JET Locksmith tool can diagnose the transponder signal strength and determine whether the issue is the key or the vehicle.
Troubleshooting Failed Programming
"Security Request Rejected"
- Cause: The Pathfinder subscription does not include security unlocks, or the JLR server is unreachable.
- Fix: Verify the subscription status. Check the internet connection. If using an offline license, you may need to purchase a security token separately.
"Key Not Detected"
- Cause: The blank key is not pre-coded with the correct VIN, or the key is incompatible with the vehicle model.
- Fix: Verify the key part number against the vehicle's VIN. If the key is correct, try placing it in a different location (e.g., the other side of the centre console).
"KVM Communication Fault"
- Cause: The KVM has lost power, is corrupted, or has a CAN bus fault.
- Fix: Check KVM fuses and power supply. Read DTCs with Pathfinder. If the KVM is corrupted, it may need to be replaced or recovered using the JET-PRO tool.
"UWB Calibration Failed"
- Cause: The UWB antenna or the key's UWB transceiver is defective.
- Fix: Try a different blank key. If calibration fails with multiple keys, inspect the vehicle's UWB antenna module (usually mounted in the B-pillar or rear bumper).
Conclusion
All-keys-lost on a modern JLR vehicle is no longer a simple locksmith job. The UWB architecture, encrypted security keys, and online authorisation requirements mean that only properly equipped workshops can handle these situations. By following the structured procedure in this guide — pre-checks, KVM reset, key programming, and verification — you can deliver a reliable all-keys-lost service that restores the customer to full functionality. The essential tools are the JLR DOIP VCI for vehicle communication, Pathfinder for the programming workflow, and the JET Locksmith for advanced key diagnostics and transponder analysis.