The part is the central information display and control unit for the HOWO MAX 4X2 driver, integrating speedometer, tachometer, fuel gauge, temperature gauge, warning lights, and a multifunction LCD screen. This combined instrument delivers real-time vehicle data, ensuring the driver has full awareness of engine and chassis status. When you choose authentic Howo Parts, this combined instrument guarantees OE fitment, accurate readings, and long-term reliability. Below are detailed descriptions of every component included with this combined instrument assembly.
The combination instrument is the main electronic cluster that replaces the traditional analogue gauges with a high-resolution TFT display. This combined instrument features a 7-inch colour screen with CAN bus communication, providing the driver with clear, real-time information. The display shows vehicle speed, engine RPM, fuel level, coolant temperature, oil pressure, battery voltage, and multiple warning indicators. The part also supports trip computer functions, distance to empty, average fuel consumption, and service reminders.
It is programmable via the diagnostic port for custom settings. The housing is made from impact-resistant ABS with a scratch-resistant lens. The part uses LED backlighting for excellent visibility in all lighting conditions. It is designed to withstand the vibration and temperature extremes of heavy-duty truck operation. A faulty combined instrument can lead to inaccurate readings and driver confusion, so replacing it with a genuine HOWO combined instrument ensures the original functionality and calibration. The part is pre-programmed for the MC13 engine and the specific vehicle configuration.
Four hexagon flower pan head tapping screws (also known as Taptite screws) are used to secure The part to the dashboard panel. These combined instrument screws are made from case-hardened steel with a phosphate coating for corrosion resistance. The flower pan head design provides a large bearing surface, preventing the plastic instrument housing from cracking. The tapping thread is specifically engineered to cut into the plastic panel,
providing strong and vibration-proof retention. The part screws are self-threading, eliminating the need for pre-tapped holes. They are designed to be installed with a T-driver or socket. Proper torque is about 3-4 Nm; overtightening can strip the plastic. Using the correct combined instrument screws ensures the cluster remains firmly in place, preventing rattles and maintaining accurate readings. If these combined instrument screws are lost or damaged, replacing them with genuine HOWO screws is essential for a secure installation.
Combined instrument – genuine HOWO digital instrument cluster and mounting hardware for MAX 4X2
The part features a 7-inch colour TFT screen with 800×480 resolution, delivering clear, sharp graphics and text. This combined instrument display is sunlight-readable and dimmable for night driving, ensuring the driver can always see critical information.
This combined instrument communicates via the vehicle’s CAN bus, receiving real-time data from the ECU, ABS, transmission, and other modules. The part displays fault codes and warnings, assisting the driver in diagnosing issues promptly.
The part housing and internal electronics are designed to withstand the harsh vibration environment of a heavy truck. The part uses robust connectors and potting for critical components to ensure long-term reliability.
This combined instrument kit includes the four hexagon flower pan head tapping screws needed for secure installation. Using the correct combined instrument screws ensures that the cluster is held firmly, preventing rattles and maintaining accurate readings.
The part is the driver’s primary interface with the vehicle’s electronic systems. It receives data from the ECU via the CAN bus network, processing and displaying over 50 parameters. The speedometer and tachometer are driven by digital signals from wheel speed sensors and the crankshaft sensor. Fuel level and coolant temperature are read from analogue sensors, converted to digital values. Warning lights are activated by specific fault codes or thresholds. The part also includes a configurable trip computer, showing average speed, fuel consumption, driving time, and distance travelled.
The part can store fault codes for later retrieval by a diagnostic tool. If The part is replaced, the new unit must be coded to the vehicle’s VIN and configuration using the diagnostic software. A non-genuine combined instrument may not communicate correctly with the CAN bus, causing inaccurate readings or warning lights. Using a genuine HOWO combined instrument ensures full compatibility and correct operation.
Before installing The part, disconnect the battery negative terminal to avoid electrical shorts. Remove the old instrument cluster by unscrewing the four mounting screws and gently pulling the cluster out of the dashboard. Disconnect the main wiring harness connector. Install the new combined instrument by connecting the harness connector (ensure it clicks securely). Position The part into the dashboard opening, aligning the screw holes.
Insert the four hexagon flower pan head tapping screws and tighten them evenly to 3-4 Nm. Do not overtighten as the plastic housing can crack. Reconnect the battery. Start the engine and verify that all gauges and warning lights function correctly. Test the dimming and trip computer functions. If needed, use the diagnostic tool to program The part with the correct vehicle configuration. The part installation is now complete.
If The part display is blank, check the fuse and the power supply connector. If some gauges are stuck or reading incorrectly, The part may need recalibration or the sensor may be faulty. A flickering display often indicates a loose connector or a failing power supply. Warning lights that remain on after starting may indicate a genuine fault or a communication error. Use a diagnostic scanner to read fault codes from The part. If The part does not respond to button presses,
the internal firmware may be corrupted; a reflash may be required. Always use genuine HOWO combined instrument components for replacement, as aftermarket units may not have the correct firmware for the MC13 engine. If the screws are loose, retighten them; if stripped, use a slightly larger screw or a thread repair insert. Never force The part into place; if it does not fit, check for obstructions.
The part requires no routine maintenance, but it should be inspected whenever the dashboard is serviced. Check that The part screws are tight, and the housing is not cracked. Clean the lens with a soft, dry cloth; avoid solvents that could damage the anti-glare coating.
If The part is exposed to extreme temperatures (e.g., after parking in direct sunlight for hours), allow it to cool before operating. Periodically check that all warning lights illuminate when the ignition is turned on (bulb check). If any warning light fails to light, the LED inside The part may be faulty; replace the entire cluster. For fleet operators, keeping a spare combined instrument in stock can reduce downtime if the unit fails. Always store The part in a static-safe bag when not installed.
This combined instrument is specifically designed for the HOWO MAX 4X2 tractor with MC13 engine and CAN bus system. It fits all production years from 2018 onward. The part is also compatible with SITRAK C7H and HOWO T7H models using the same dash architecture.
It is not compatible with older HOWO A7 or WD615 models, which use a different instrument cluster with analogue gauges. The part screw set (Q27A4216) is a standard M4 screw assembly used across many dashboards. Always verify your vehicle’s VIN and ECU type before ordering this combined instrument kit.
Aftermarket combined instruments often use lower-quality LCD panels that suffer from poor contrast or premature backlight failure. The CAN bus interface in copy units may not properly decode the data streams, leading to incorrect speed, RPM, or temperature readings. The firmware may not support all warning light functions, potentially hiding critical alerts.
The screws supplied with aftermarket kits may be made from soft steel that strips or corrodes. Genuine HOWO combined instrument components are manufactured to SINOTRUK’s exact specifications, using high-grade display technology and robust connectors. The small additional cost of a genuine combined instrument is insignificant compared to the cost of misdiagnosis due to inaccurate readings or the risk of ignoring a serious warning.
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