FOXWELL HD500 Heavy Duty Truck Scanner Diesel Diagnostic Scan Tool Speed Limit For Sale

Brand FOXWELL Power Source Battery Powered Operating System Android 9.0 Screen Size 5.5 inches Automotive Fit Type Universal Fit About this item

• 【Built for Diesel Powerhouses】FOXWELL HD500 heavy duty truck scanner is tailored to vehicles equipped with cummins, cat, detroit, paccar, international, hino and more engines. This diesel scan tool comes with multiple adapters (6 & 9 pin, CAT-9 pin, CAT-14 pin, 16 pin) for wide coverage. Delivers accurate diagnostics and reliable troubleshooting for trucks, buses, and heavy equipment. Tip: If the fault code of your truck follows the factory custom protocol, please enter the diagnostic menu, and then select the corresponding engine to test, so that your test data will be more accurate.(Please note that the HD500 does not have offerirectional and VGT calibration.)
• 【Smarter DPF Management】Clogged DPF killing performance? The HD500 diesel scanner handles DPF regen, reset, and status control with ease—keeping emissions clean, engines strong, and trucks on the road longer. Save thousands by avoiding costly DPF replacements. (Not supported on Isuzu vehicles.)
• 【Cylinder Cut-Off Made Simple】Pinpoint faulty injectors fast with cylinder cut-off testing. The HD500 semi truck diagnostic tool commands the ECU to disable one injector at a time—helping you quickly spot bad cylinders and guide precise repairs without guesswork.
• 【Speed Limit Reset & ABS】Set speed limits for safety and reset engine/road speed parameters on supported vehicles. Plus, bleed the ABS module to restore a firm brake pedal. The HD500 diesel scanner diagnostic tool keeps your fleet safer, saves repair costs, and minimizes downtime. (Speed limit reset not available on all engines—check VIN before purchase.)
• 【Access All Major Systems with Ease】The HD500 heavy duty scanner truck diesel provides full diagnostic capabilities, covering the engine, ABS, SRS, EPB, Park Brake Controller, DPF, etc. It comes with full HD OBD/EOBD/ OBD2 service modes, including read codes, erase codes, live data, etc. Allows you to quickly identify issues and perform necessary solutions.
• 【Versatile for Commercial & Passenger Vehicles】This heavy duty scan tool supports heavy-duty trucks, pickup trucks, light trucks, buses, trailers, tractor, construction vehicles, agricultural vehicles. Compatible with multiple protocols such as J1587, J1939, J1708, J27145, ISO9141-2, ISO14230-2, ISO15765-4. !!Note!!: Alison transmission are not currently supported and are being developed.

he HD500 diesel scanner diagnostic tool - FOXWELL's first professional truck scanner, is designed for diesel-powered vehicles. It is suitable for both passenger and commercial vehicles, including class 3 - 8 trucks (33,000 lbs and over) like trucks/pickup trucks, buses, trailers, excavators, agricultural machinery, and construction equipment.

More service options bring more possibilities for efficient and effortless repair work! (NOTE: Service functions vary by vehicle model. Check compatibility with us if unsure. Ensure your engine is compatible with J1587, J1939, J1708, J27145, ISO9141-2, ISO14230-2, ISO15765-4 protocols.)

D.PF Regeneration:

D.PF clogging is a common vehicle maintenance issue, harming engine performance, triggering fault codes, and raising costs. D.PF regeneration resolves these by clearing accumulated soot:​ 1. Maintains peak engine performance by reducing back pressure from particle buildup.​ 2. Extends D.PF lifespan by preventing clogging.​ 3. Ensures compliance with National VI Emission Standards.​ 4. Boosts fuel efficiency via improved engine operation from soot combustion.

Injector Cutoff / Cut Cylinder:

When the engine is idling, disable any cylinder and locate the issue by observing engine performance changes. Close a cylinder injector when the injection volume increases the greater the cylinder working condition is better, if the injection volume is unchanged or compared with other cylinders increased very little, the cylinder may be faulty, at this time you should check the cylinder's air tightness and whether the injector is working poorly. This method quickly pinpoints under-performing cylinders without disassembly, saving time and costs—ideal for field use without equipment.

Speed Limit Setting(Please note that the adjust the speed limit is supported by fewer vehicles. To prevent unnecessary returns, please verify the vehicle VIN number in advance):

Take control of your driving safety. Road and traffic conditions vary across regions, and each area enforces different legal speed limits—for example, 25 mph (40 km/h) in residential zones, 30 mph (50 km/h) in commercial areas, and 55 mph (90 km/h) on highways. With the HD500 heavy duty scanner truck diesel, you can check and adjust the engine speed limit while parked, helping your vehicle stay within legal limits and avoid costly fines or safety risks. Perfect for fleet management, highway driving, and ensuring compliance wherever you travel.

ABS Bleeding:

ABS brake bleeding to get a firm brake pad after air exhaustion after repair ABS pump system. Ensure that the vehicle can respond quickly during emergency braking, improving driving safety.