All Terrain Progress Control (ATPC)

Technical Overview

ATPC operation relies on coordinated interaction between CHCM chassis‑control‑module, PCM powertrain, TCM transmission, DSC stability‑control and instrument‑cluster modules. Once activated via steering‑wheel cruise switches, the system holds user‑selected low‑speed in forward and reverse, working alongside Hill Descent Control (HDC) for gradient management on off‑road surfaces. Feature enablement requires correct setting of ATPC fitment flags inside the master CCF, alongside Terrain‑Response‑type parameters. This coding workflow reads and backs‑up original factory CCF, enables ATPC‑related chassis‑domain flags, executes cross‑module integrity validation and writes modified configuration back via OBD‑II connection. Post‑write, controlled CHCM, powertrain‑module resets plus full vehicle sleep‑wake cycle are mandatory for instrument‑cluster HMI indicators and ATPC logic to initialise. This is purely software‑based activation; complete physical off‑road chassis hardware must already be installed. Full roll‑back to factory‑spec can be achieved restoring the backed‑up original CCF file.

Core Technical Activation Capabilities

• Multi‑block chassis‑domain CCF‑parameter modification unlocking All‑Terrain‑Progress‑Control (ATPC) for Terrain‑Response‑hardware‑equipped JLR vehicles
• Enables low‑speed off‑road cruise‑control operation (forward‑reverse), steering‑wheel‑switch control and instrument‑cluster ATPC status‑indicators with HDC integration
• Pre‑write cross‑module CCF integrity validation preventing incompatible chassis‑powertrain‑brake‑domain parameter combinations before committing changes to vehicle ECUs
• Complete CCF backup‑restore workflow preserving original factory‑configuration before applying ATPC‑related chassis‑changes
• Chassis diagnostic routines: read CHCM, DSC and PCM DTC faults; verify pre‑activation and post‑activation ATPC feature‑flag‑status
• Session‑log generation capturing vehicle VIN, timestamp and modified chassis‑CCF parameters for internal workshop audit‑trail purposes.

Vehicle, Hardware & System Prerequisites

Critical hardware prerequisites: vehicle must have factory‑fitted Terrain‑Response system, AWD transfer‑case, functional CHCM chassis‑control‑module and compatible DSC‑brake‑hardware. ATPC cannot be enabled‑by‑coding‑alone if any required off‑road chassis‑components are missing or faulty. Supported MY2015‑2025 Range‑Rover, Range‑Rover‑Sport, Defender, Discovery model‑lines. 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 chassis‑domain‑configuration‑writes. ATPC is an off‑road‑driver‑aid and does not replace safe driver judgement on challenging terrain.

What This Activation Service Includes

• All‑Terrain‑Progress‑Control (ATPC) multi‑block CCF‑coding‑activation workflow for chassis‑hardware‑qualified‑compatible‑JLR‑vehicles
• Chassis‑domain CCF backup‑restore tool‑set for ATPC‑related‑configuration‑datasets
• Technical documentation: pre‑activation‑hardware‑verification‑checklist, coding‑procedure and post‑activation‑function‑testing‑guidance‑including‑vehicle‑sleep‑cycle‑instructions