Product Description
Autel Haldex 4-Pin CV Adapter (HALDEX4)
The Autel Haldex 4-Pin CV Adapter is a specialized diagnostic connector that enables direct communication with Haldex trailer ABS modules for commercial vehicle braking system diagnostics. If you are running an Autel MaxiSYS CV tablet and servicing trailers equipped with Haldex trailer braking systems, this adapter is the hardware link between your scan tool and the trailer's ABS module.
What This Adapter Does
Haldex is a major manufacturer of trailer braking systems used on semi-trailers, flatbeds, tankers, and other commercial trailers across North America and Europe. The Haldex system has its own proprietary 4-pin diagnostic connector — standard OBD-II or J1939 9-pin Deutsch adapters do not connect to it. This Autel adapter bridges that gap, allowing your MaxiSYS CV tablet to communicate directly with the Haldex ABS module for diagnostics.
- Connects directly to the ABS module on Haldex trailer braking systems
- 4-pin CV (commercial vehicle) connector configuration specific to Haldex systems
- Enables full Haldex braking system diagnostic coverage through Autel MaxiSYS CV software
- Covered by a one-year limited warranty
Compatible Autel Tablets
This adapter works with Autel MaxiSYS CV tablets that include Haldex braking system software coverage. The primary compatible platform is the Autel MS909CV, Autel's 9.7" advanced commercial vehicle diagnostic tablet with Bluetooth MFVCI/J2534/RP1210 device. The MS909CV includes comprehensive heavy-duty coverage for Class 1–8 trucks and trailers, including off-road construction and agricultural equipment.
Verify that your specific MaxiSYS CV tablet has Haldex software coverage before purchasing this adapter.
Who Needs This Adapter
This adapter is for:
- Truck and trailer repair shops that service semi-trailer braking systems
- Fleet maintenance operations working on trailers with Haldex ABS
- Mobile heavy-duty technicians doing trailer brake work at customer locations
If you only service Class 8 trucks and not trailers, you likely do not need this adapter — Haldex systems are typically found on trailers, not tractors. But if trailers are in your workload and you have an Autel MaxiSYS CV tablet, this is a necessary piece of hardware to access Haldex ABS diagnostics.
What You Can Diagnose
Through the Autel MaxiSYS CV Haldex software coverage, you can read and erase fault codes, view live data from the Haldex ABS module, and perform applicable service functions. Specific test and function availability depends on the Haldex system generation and your tablet's current software version.
Why Buy From OEM Diagnostic Tools?
OEM Diagnostic Tools has specialized in heavy-duty and commercial vehicle diagnostic equipment since 2016. We stock the full Autel commercial vehicle lineup including MaxiSYS CV tablets and adapters. If you need to confirm that this adapter works with your specific Autel CV tablet model and software version, call us at 866-217-0063 before ordering. Free shipping, free tech support, one-year warranty.
Call 866-217-0063 for quick answers and help!
