Radio frequency adjustment (for USA vehicles)

Technical Overview

USA‑market JLR ICM / ACM audio‑control modules apply regional frequency‑step limits stored within infotainment‑domain CCF parameters. By factory default, US‑spec radio hardware uses 200 kHz channel spacing allowing only odd FM frequencies. This coding workflow reads the original vehicle Car‑Configuration‑File, adjusts radio‑region and frequency‑step flags inside infotainment configuration blocks, executes multi‑module integrity validation and writes modified dataset back via OBD‑II connection. Post‑write, controlled infotainment module resets are performed to apply changes. This modification works with existing physical radio tuner hardware; no hardware component replacement is required. Full roll‑back to original USA‑spec odd‑only FM behaviour is achievable restoring the backed‑up original CCF file.

Core Technical Adjustment Capabilities

• Infotainment‑domain CCF parameter modification to remove factory USA odd‑only FM frequency restriction, enabling even‑numbered FM station reception
• Pre‑write multi‑module CCF integrity validation preventing invalid infotainment‑region parameter combinations before committing data to ICM‑ACM modules
• Complete CCF backup‑restore workflow preserving original factory USA‑spec configuration before applying radio‑frequency‑related changes
• Infotainment diagnostic routines: read ICM‑ACM DTC faults, verify pre‑adjustment and post‑adjustment radio‑region and frequency‑step flag status
• Supports legacy MY2015‑2016 CAN‑bus platforms and modern MY2017‑2025 ISO 13400‑2 DoIP vehicle architectures with InControl Touch‑Pro or Pivi‑Pro systems
• Session‑log generation capturing vehicle VIN, timestamp and modified infotainment‑CCF parameters for internal workshop audit‑trail purposes.

Vehicle, Hardware & System Prerequisites

Critical hardware prerequisite: vehicle must be USA‑spec factory‑fitted with functional FM radio tuner hardware; coding cannot add radio hardware that is physically absent. Supported MY2015‑2025 Range Rover, Range Rover Sport, Defender, Discovery, Velar, Evoque and full Jaguar US‑market model ranges. Host‑system requirement: Windows 10 / Windows 11 64‑bit PC with valid SX‑TOOL software licence. Use J2534 pass‑through adapters for older CAN‑bus vehicles or Enet‑WiFi / Type‑C Enet‑cable hardware for DoIP‑platform vehicles. Stable regulated 12 V battery supply is mandatory for CCF‑write cycles and infotainment module resets. Some late‑model secure‑gateway‑protected vehicles may require supplementary online authorisation for infotainment‑domain configuration writes.

What This Adjustment Service Includes

• Radio frequency adjustment CCF‑coding workflow for compatible USA‑spec JLR vehicles, unlocking even‑numbered FM‑frequency tuning
• Infotainment‑domain CCF backup‑restore tool‑set for radio‑region‑related configuration datasets
• Technical documentation: pre‑adjustment hardware‑verification checklist, coding procedure and post‑modification radio‑function‑testing guidance