LAUNCH X431 HD III Heavy Duty Truck Module
Turns a compatible X431 tablet into a 24V commercial vehicle tool — J1939/J1708 coverage for trucks, buses and fleets.
$1,200.00
SKU X431-HD3-MODULE
Heavy Duty Truck Diagnostics
Launch X431 HD III module and 24V truck coverage for fleets and commercial workshops
Heavy-duty diagnostics is a different job from car diagnostics: 24V systems, J1939 and J1708 protocols, engine and aftertreatment diagnostics on trucks, buses and off-highway equipment, plus a licensing model where the truck software is usually sold separately from the car software. Launch covers this with the HD III heavy-duty module — a 24V-capable adapter that turns a compatible PRO or PAD tablet into a commercial vehicle tool — and with heavy-duty software licences added to the platform.
What to check before buying: your tablet model must be on the compatibility list, the truck software licence is typically purchased in addition to the hardware, and coverage depth varies by manufacturer — European truck brands are strong, some off-highway and Chinese-market equipment is thinner. We list the included and optional items on each product page so there are no surprises after arrival.
For fleets, the economics are simple: one HD-capable tool plus the right licences usually costs less than a handful of dealer visits, and it lets your own technicians do fault confirmation and aftertreatment work on site. Tell us your fleet mix (truck brands, model years, bus or truck) and we will confirm the exact licence combination before you order.
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Frequently asked questions
Do I need a separate tool for trucks, or does the HD module convert my car scanner?
On supported tablets, the HD III module plus the appropriate heavy-duty software licence allows the same device to work on 24V commercial vehicles. Always confirm the tablet model is on the compatibility list and that the truck licence is included — the module alone is not enough.
Which truck brands are covered?
Coverage is strongest on major European and North American truck and bus brands, with engine and aftertreatment diagnostics, DPF regeneration and service resets. Confirm your specific brands and model years with us before ordering, especially for off-highway equipment.