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The OpenHaldex Controller is an opensource tunable Haldex 4Motion AWD performance module for VW and Audi vehicles, offering configurable torque behaviour and multiple drive modes. Setup and configuration are handled with the onboard WiFi, with support for Gen1, Gen2, Gen4 and Gen5 Haldex systems.
The OpenHaldex C6 Haldex Controller is specifically designed for Generation 1, 2, 4 and 5 Haldex modules (0CQ and 0AY).
The original OpenHaldex project only supported Gen1, but Forbes Automotive has reverse engineered the signals for Gen2, Gen4 and Gen5 chassis. This is the home of the original product!
Gen3 is currently in development and we are actively seeking support to grow these features!
Unlock the full potential of your Haldex system with the OpenHaldex Controller. This advanced controller gives you complete control over your OEM Haldex system, allowing for switchable modes between Stock, front-wheel drive (perfect for burnouts!), 60/40, 75/25 and 50/50 or 'Tune your Own' Haldex — where you can build your own perfected map for lock over speed and throttle! It's perfect for drag scenarios!
Choose your preferred method of operation — via the built-in WiFi support, using CAN signals or using the mode button on the enclosure. A bright LED will show the current mode.
An OpenHaldex C6-equipped Audi A3 recently became the fastest MQB 1.8 EA888 in the world — completing the quarter mile in 9.93 seconds at 138mph with 629bhp and 514ft’lbs. The OpenHaldex C6 Controller with plug-and-play harness was central to putting that power down consistently off the line.
The OpenHaldex Controller supports VW and Audi vehicles using Gen1, Gen2, Gen4 and Gen5 (0CQ & 0AY) Haldex systems. See the full Haldex compatibility guide for a complete list by make, model and year.
All four-wheel drive Golf variants from the MK4 through to the MK7.5 are supported: Golf MK4 R32/4Motion (Gen1), Golf MK5 R32/4Motion (Gen2), Golf MK6 R/4Motion (Gen4), and Golf MK7 & MK7.5 R/4Motion (Gen5). Golf MK8 is not currently supported.
Yes — the Audi TT (8N, 8J, 8S), S3/RS3 (8L, 8P, 8V) and A3 Quattro are all supported across Gen1 through Gen5. Check the compatibility guide for the exact generation your model uses.
Both are Gen5 Haldex units used on MQB platform vehicles. 0CQ is the more common unit found in Golf R, S3, and TT variants from 2012 onwards. 0AY is found in later MQB models. The OpenHaldex C6 Controller fully supports both.
Not yet. Gen3 is currently in development and we are actively seeking CAN data to progress this. If you have a Gen3 vehicle and want to help, get in touch via the Discord.
No — Golf MK8 is not currently supported. Development is ongoing and community support is always welcome.
Yes! Anyone can assist by providing CAN data for any generation (the OpenHaldex has SavvyCAN built in). These logs will be key in understanding the OEM messages and how they can be implemented into the controller!
No. Configuration and mode selection are handled via the controller's onboard WiFi interface, accessible from any modern web browser on a phone, tablet, or laptop.
The controller installs inline with the factory Haldex system. Installation typically takes around 30 minutes for someone familiar with basic automotive wiring.
Choosing the optional plug and play harness takes just a couple of minutes — lift the rear seat, plug the module in and drive! The harness is available for Gen1–4 and Gen5 separately.
Yes! The OpenHaldex Controller supports a standalone mode, allowing operation without CAN data from the ECU or ABS module. This makes it suitable for custom conversions and motorsport applications.
The controller comes fully assembled, requiring only the final connection from the chassis to the module socket. Installation is straightforward and typically takes about 30 minutes, with all necessary pins included. No extensive knowledge is required; just some basic wiring skills.
An optional wiring harness, sold separately, can make installation quicker and makes for easier removal.
The controller does NOT come with the harness — it must be purchased separately!
Transform your driving experience with the Haldex Controller — where performance meets control.
As development and support grows there will be regular firmware updates which are released on the GitHub site and can be downloaded and installed with a standard USB-C cable.
Development is always ongoing and users should be aware that there may be software bugs. While I do my best to maintain, the primary focus should be the Discord.
A quick online module updater is here: https://forbes-automotive.com/pages/module-software-updater
The GitHub is available here: https://github.com/Forbes-Automotive/OpenHaldex-C6
The Setup Guide is available here: https://www.youtube.com/watch?v=oAP6oxk7bO8
*Note: the 'follow brake' and 'follow handbrake' options are ONLY available if the end user wires these in. The optional wiring harness is 'straight-through' on these sections so this is not supported by default. It is for the 'extreme' user.
*FOR OFF-ROAD USE ONLY*
Free standard UK shipping on orders over £49.99!
Estimated delivery 48-72 business hours after placing your order.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You can read our full refund policy for more in depth information.
The Forbes Automotive OpenHaldex C6 Controller gives you full control over the Haldex 4Motion system, offering 4 switchable modes.
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 capability and is positioned between the ECU and the existing Haldex module. It is WiFi-enabled and can be controlled using:
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 that the OpenHaldex module can be used on conversions or cars without working CAN-BUS. This will mimic OEM CAN-BUS signals to the Haldex pump, allowing it to operate as if there were an original ECU in place.
An optional Plug & Play harness is available. This allows the utilization of the OEM plugs, which means the module can be removed at any time! Click here for more information.
*Sold separately
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.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
For countries outside of the UK, please note that custom fees may be applied by the receiving country. These are the responsibility of the customer to pay.
Great product, fast delivery
Probably the greatest Haldex system controller around, and at a great value. I could tell a difference immediately on first use over OEM system settings when using expert mode to make a map.
Great device and great options
STREETMODCULTURE LOVE IT
Going to be amazing for my 60fts - 920A3
Product and product support are phenomenal. Customer service and communication have been amazing with quick responses. The controller acts as intended. Couldn’t be happier with the purchase.
Great product. Works exactly as described.
See @3po_performance for video of it working on a car.
Amazing bit of kit ! Worth every penny and the after support from Adam and his team is brilliant !
Easy to set up and work like a dream high five to the guy to designed it
Excellent concept idea to make the TT more competitive on track or just safer on road , it has had excellent testing and reviews by previous buyers and my venture on track recently was without any drama and the TT drove superbly
More news later in the year
Easily plug and play with available wiring harness
Does what’s expected great product easy installation.
Best in the game! Works superbly 👌🏼
Sehr gute produkte habe öfters schon bestellt und war und bin immer noch zufrieden
Immer wieder
Sounds like the haldex controller is awesome
Amazing bit of kit
Cant get any better for the price and the help from Adam is amazing
The app was a bit iffy to get going with but the adam sorted it for me with no issue an the controller worked perfectly right from get go would recommend to anyone
I bought the Forbes Automotive Haldex controller and wiring harness as an alternative to the other, more expensive options on the market and could not be happier with my decision.
I have an Audi S3 8L that use for hillclimbs, and was looking for more of a mechanical advantage and a more predictable Haldex engagement over the stock setup.
After installing it on the car, I can confidently say that it has improved the driving characteristics, and it feels like a completely different car.
Before the install, the car would understeer in corners; then, when I would try to modulate the throttle, the Haldex would kick the rears in and push me out even wider. With the Forbes Automotive controller installed, the car handles how it should and gives me the confidence and predictability in corners where I can actively feel the rear end engaging.
The module and harness were very easy to install, and I cannot think of a better upgrade that offers the same value and ease of installation for the gains achieved. Adam has been incredibly helpful and has gone above and beyond for me when I had any questions.
I'd highly recommend getting this cheap and cheerful upgrade to anyone looking to improve their car, turning it from an understeering mess, into a proper 4WD machine.
The openHaldex 4WD drive controller is a versatile and impressive piece of technology for enthusiasts and professionals alike who are looking to fine-tune or upgrade their all-wheel-drive systems. Designed with precision. it is a perfect choice for vehicles that use the Haldex all-wheel-drive system - offering users more control and customization and performance.
does what it says on the tin . great support from the company too when i had issues installing. would recommend a++
great staff. very helpful with all queries I had. Will buy again
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