8HP Transmission Control Now Available for RM-Primis ECU Owners (As of 27/06/2025)

The RM-Primis ECU now includes native control for ZF 8HP transmissions via CAN-BUS, completely free for all RM-Primis users.

Main Features

·         Full native 8HP control via CAN-BUS — no external modules or controllers required

·         Direct unlock and control of BMW F-Series 8HP transmissions

·         No physical modification required to the TCU or transmission hardware

·         No need for external programmers for F-Series

·         Integration mimics OEM ECU/DME behavior, ensuring OEM-like gearshift logic

·         Diagnostic capabilities included:

·           - Read/delete DTCs (trouble codes)

·           - Read TCU firmware version

·           - Monitor real-time TCU status and operational parameters

Shifter Support

·         Currently supports:

·           - BMW F-Series electronic shifter

·         Other shifters (e.g., Jaguar rotary, Jeep, or aftermarket paddles):

·           - Support can be added on request — just contact us with your setup

Compatibility by Transmission/TCU Type

·         Supported Without Flashing (Plug-and-Play)

·         BMW F-Series (e.g. F30, F10, F32, etc.):

·           - ZF 8HP45, 8HP50, 8HP70 (typical F-Series variants)

·           - No TCU flashing or external intervention required

·           - Controlled natively via RM-Primis CAN-BUS

·         BMW G-Series:

·           - Same physical interface as F-Series

·           - May require minor tweaks to CAN protocol depending on year/model

·           - We offer personalized support to make it work in your G-Series build

·         Supported With Firmware Flashing (Free TCU Flash Service Provided)

·         BMW E-Series (e.g. E90, E70, etc.):

·           - Must flash F-Series compatible firmware to the TCU

·           - Hardware is usually identical or very similar

·         Chrysler/Dodge/Jeep 8HP:

·           - Example: Charger, Challenger, Ram 1500, Grand Cherokee

·           - Flashing is required to convert CAN protocol to BMW/F-Series logic

·         Jaguar / Land Rover 8HP:

·           - TCU must be re-flashed for compatibility

·           - Contact us for supported part numbers

·         Maserati / Alfa Romeo / Other 8HP Variants:

·           - Flashing required

·           - Depends on TCU hardware compatibility with F-Series firmware

Free TCU Flashing Service

·         Ship us the TCU electronics (not the entire transmission)

·         We’ll flash it and return it ready to be used with RM-Primis

·         Turnaround time typically 1–2 business days after arrival

More Info & Demonstration

See the full implementation, feature breakdown, and diagnostics demo in the video linked below.