OpenHaldex Tech Spec
xThe Forbes Automotive OpenHaldex C6 Controller
The Forbes Automotive OpenHaldex C6 Controller gives you full control over the Haldex 4Motion system, offering 6 switchable modes.
How It Works
On 4Motion cars, the Haldex system waits until it detects slip from the front wheels, at which point it engages the clutch pack within the Haldex unit to drive the rear wheels. On high-performance cars, it may be advantageous to force specific modes to suit the driving style required at the time.
The OpenHaldex C6 controller is based on an ESP32 with WiFi and sits between the powertrain ECUs and the existing Haldex module. It can be controlled using:
- Push buttons on the device
- External button
- Via CAN
- Your phone's browser
Technical Details
The OpenHaldex module takes the existing CAN-BUS signals coming from the ECU to the OEM Haldex module and adjusts them to suit the required mode. There is a standalone mode, which means the module can be used on conversions or cars without working CAN-BUS. It mimics OEM CAN-BUS signals to the Haldex pump, allowing it to operate as if there were an original ECU in place.
Available Modes
- Stock (if provided with OEM CAN signals)
- FWD
- 50/50
- 60/40
- 75/25
- Expert
Optional Plug & Play Harness
An optional plug and play harness lets you use the OEM plugs, so the module can be removed at any time: Gen 1-4 harness or Gen 5 harness (sold separately).
Full documentation: openhaldex.com
Haldex Versions & Compatibility
xHaldex Versions & Compatibility
Not sure which Haldex generation your car runs? We’ve built a full compatibility checker with drop-downs by brand and model.
Open the Haldex compatibility checker
If your car isn’t listed, send us your model and year — we’re happy to help confirm it.
Shipping & Returns
xUK delivery
UK orders are sent Royal Mail Tracked 48. Delivery is free on orders over £50, and £4 below that.
International delivery
We ship to the EU, the US and most of the world. The rate for your country is shown at checkout. Import duty or local taxes may be charged by your country when the parcel arrives, and these are paid by you.
Built to order
Some boards and harnesses are built to order. If yours isn't ready to go straight away, we'll email you with a dispatch date.
Returns
You have 30 days from delivery to ask for a return. Email sales@forbes-automotive.com first, and items need to be unused and in their original packaging.
Return postage is paid by you, unless the item arrived faulty, damaged or wasn't what you ordered. In that case we'll sort it out and cover the cost.
Custom tunes, ECU services and other made-to-order work can't be returned. Approved refunds go back to your original payment method within 10 working days.
Full details are in our refund policy and shipping policy.
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