Auto High Beam Assist (AHBA)

Technical Overview

The AHBA system relies on the forward‑facing camera to detect oncoming vehicle headlamps and preceding‑vehicle taillights, sending signalling commands to the Headlamp Control Module (HCM) to toggle high‑beam output accordingly. Feature enablement is governed by dedicated lighting‑domain parameters stored in the vehicle master Car‑Configuration‑File. This coding workflow reads the original factory CCF dataset, sets AHBA fitment and menu‑visibility flags, executes multi‑module integrity validation and writes modified configuration back via OBD‑II connection. Post‑write, controlled HCM and body‑control‑module resets are performed for configuration take‑effect. This is purely software‑based CCF modification; physical forward‑facing camera hardware must already be fitted. Full roll‑back can be achieved restoring the original backed‑up CCF file back to factory specification.

Core Technical Activation Capabilities

• CCF lighting‑domain parameter modification to enable Auto High Beam Assist (AHBA) for camera‑equipped JLR vehicles
• Pre‑write multi‑module CCF integrity validation preventing invalid lighting‑domain parameter combinations before committing data to vehicle modules
• Complete CCF backup‑restore workflow, preserving original factory configuration before applying lighting‑related configuration changes
• Lighting‑system diagnostic routines: read HCM‑module DTC faults, verify pre‑activation and post‑activation AHBA feature‑flag status
• Supports legacy MY2015‑2016 CAN‑bus platforms and modern MY2017‑2025 ISO 13400‑2 DoIP vehicle architectures
• Session‑log generation capturing vehicle VIN, timestamp and modified lighting‑CCF parameters for internal workshop audit‑trail purposes.

Vehicle, Hardware & System Prerequisites

Critical hardware prerequisite: vehicle must be factory‑fitted with functional forward‑facing windscreen‑mounted camera and compatible HCM headlamp‑control hardware. AHBA cannot be activated purely by coding if camera hardware is missing or faulty. Supported MY2015‑2025 Range Rover, Range Rover Sport, Defender, Discovery, Velar, Evoque and Jaguar 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 module resets. Some late‑model secure‑gateway‑protected vehicles may require supplementary online authorisation for lighting‑domain configuration writes.

What This Activation Service Includes

• Auto High Beam Assist (AHBA) CCF‑coding activation workflow for camera‑hardware‑equipped compatible JLR vehicles
• Lighting‑domain CCF backup‑restore tool‑set for AHBA‑related configuration datasets
• Technical documentation: pre‑activation hardware‑verification checklist, coding procedure and post‑activation function‑testing guidance