GWM (Great Wall Motors) and its Haval brand have grown rapidly in Australia, with models including the Haval H6, Jolion, H9, the Cannon ute, and the Tank 300. As Chinese vehicles, they use a mix of domestic and licensed technology – powertrains based on Mitsubishi engines on older models, transitioning to GWM-developed engines and hybrid systems on newer models. This guide covers the most common Haval and GWM dashboard warning lights.
Check Engine Light Triggers
Common triggers on Haval and GWM vehicles include oxygen sensor faults (typical of any modern petrol vehicle), turbo actuator faults on the 2.0T petrol, EVAP system codes (sometimes triggered by Australian climate effects on the original sealing), and on the diesel Cannon, common-rail injector faults and DPF regeneration issues. The 7-speed dual-clutch transmission used on some Haval models has its own set of fault codes that require GWM-specific diagnostic access.
Generic OBD-II scanners read basic powertrain codes on Haval/GWM vehicles. For body control, transmission, and ADAS systems, you need a scanner with GWM/Haval coverage – many modern aftermarket scan tools (Autel, Launch, Foxwell) have added support, or specialist Chinese-vehicle workshops have factory tools.
ADAS Warnings
Modern Haval and GWM models come with extensive ADAS (Advanced Driver Assistance Systems) including lane keep assist, adaptive cruise, blind spot monitoring, autonomous emergency braking, and 360-degree cameras. These systems generate warnings if any sensor (cameras, radars, ultrasonic sensors) is blocked, dirty, or misaligned. Common triggers include front radar covered by snow or mud, windscreen cameras affected by sun glare or stickers, and rear cameras with water in the housing.
After windscreen replacement, the front-facing cameras must be recalibrated. Many independent shops cannot perform this calibration; it requires GWM/Haval-specific procedures and target boards.
Hybrid System Warnings
The H6 Hybrid and Jolion Hybrid use a complex DHT (Dedicated Hybrid Transmission) system with multiple electric motors and clutch packs. Hybrid system warnings should not be ignored – high-voltage faults can be dangerous. Take any hybrid warning to a qualified technician with hybrid certification rather than attempting DIY work on the high-voltage system.
Service Reminder
Haval and GWM use distance-based service reminders that are reset through the dashboard menu after each service. The procedure varies by model but typically involves entering the service menu through the vehicle settings, selecting the service item, and confirming the reset. Failing to reset the reminder after service results in the warning continuing to display.
Battery and Electrical
Like many modern vehicles, Haval/GWM models are sensitive to battery condition. With many electronic systems running even when parked, weak batteries cause cascading warnings across multiple systems. If multiple unrelated warnings appear after the vehicle has been parked for a while, check battery condition first before chasing each fault individually.
For complete Haval and GWM diagnostic procedures, fault code definitions, and component locations, MechanicMate offers PDF workshop manuals for over 960 models at mechanicmate.net/shop.
— MechanicMate . Questions or a second opinion? [email protected].