Add additional key fob

Product Overview (JLR OEM‑Spec Smart‑Key Programming Service)

Add additional key fob is a specialist DOIP security programming service for DOIP‑architecture JLR Defender L663 vehicles. Many owners want a spare smart‑key fob for household multiple‑driver use or emergency backup. The L663 PEPS passive‑entry system uses encrypted UWB ultra‑wide‑band security. A physical key‑fob copy alone cannot start the vehicle without official module programming.

This is a diagnostic programming‑only service. The physical UWB‑capable smart‑key fob hardware must be supplied and prepared beforehand. jlrcoding technicians perform DOIP security access, KVM/RFA keyless‑vehicle‑module adaptation, immobiliser synchronisation and DTC fault clearing. Correct programming registers the new fob identity into vehicle security memory alongside existing working keys.

Key‑System Hardware & Operating Logic

The Defender L663 KVM/RFA module stores registered smart‑key identities inside non‑volatile memory. Each genuine UWB smart‑fob transmits encrypted rolling‑code data over radio‑frequency channels. The vehicle validates cryptographic challenge‑response before granting door‑unlock and engine‑start authorisation.

After successful programming, the additional key fob supports all factory functions: passive entry, passive start, remote lock‑unlock, boot release and panic‑alarm. Existing original keys remain fully functional and are not erased during this add‑key process. Unprogrammed blank fobs will only offer manual emergency‑blade mechanical unlocking, without electronic ignition authorisation.

Even with physically cut emergency blade, the new fob cannot communicate with immobiliser until KVM/RFA key‑learn procedure completes over CAN‑FD vehicle bus.

Vehicle Eligibility & Technical Pre‑Conditions

This Add additional key fob service applies to 2020‑onwards Defender L663 90, 110 and 130 chassis. At least one fully working original UWB smart‑key fob must be present during programming session. Submit your VIN number to jlrcoding first for pre‑service validation and confirm key‑blank hardware compatibility.

Vehicle battery voltage must remain stable above 13.5 V throughout the programming session. Our technicians run a full DOIP pre‑scan before security‑access operations. We back‑up your original CCF file, execute authorised key‑learn routine inside KVM/RFA module, synchronise immobiliser parameters and clear temporary security‑related DTC faults.

You can arrange local workshop service or our global remote coding service. Remote sessions require a DOIP‑VCI or Enet Type‑C cable following jlrcoding standard remote‑service workflow. Remote key‑programming requires physical on‑site handling of the new key fob at vehicle location.

Key Technical & Practical Benefits

• • OEM‑Level Spare‑Key Registration: Adds additional UWB smart‑fob into factory KVM/RFA memory, preserving all original key‑fob functionality.
  • Existing Keys Remain Intact

: Programming adds new key‑ID without deleting your current working smart‑key fobs from vehicle security storage.

• Full PEPS System Integration: Supports passive‑entry, passive‑start, remote buttons and immobiliser engine‑start authentication.
• Professional KVM/RFA & DOIP Security Procedure: Secure authorised access, CCF backup and post‑programming DTC clearing to avoid security‑system warning lights.

Quality Assurance & Service Notes

Every Add additional key fob programming session includes pre‑service diagnostic health‑check and original CCF backup. Our team performs post‑programming verification: testing lock‑unlock, passive entry, panic‑button and engine‑start operation for both old and newly‑added key fobs.

This service handles software‑side security registration only. It cannot repair damaged KVM/RFA hardware or fix faulty key‑fob electronics. Physical key‑blank supply and emergency‑blade cutting are separate from this programming service. Once fully programmed, your extra smart‑key fob provides reliable backup convenience for multi‑driver Defender L663 households and travel‑focused owners.