Automobile Qin-PLUS letter combination assembly component
"Faults in the assembly components of the vehicle's instrument panel" usually refer to abnormalities in the dashboard (combination instrument) and its integrated components (such as sensors, wiring, communication modules), resulting in incorrect illumination of indicator lights, black screen on the display, malfunctioning pointers, or incorrect information display. This is not necessarily an issue with the instrument itself, but rather a related system failure.
Common causes: fuse blowout, loose or corroded wiring harness/plugs, sensor failures (such as speed, oil pressure, or battery sensors), CAN network communication interruption (e.g., HS2CAN), damage to the internal circuits or display of the instrument, or mechanical connection problems with the flexible shaft (for older mechanical speedometers); in some cases, it could be a "false fault" - that is, other system abnormalities are correctly alerted by the instrument, rather than an issue with the instrument itself.
Typical manifestations: multiple warning lights constantly illuminated (such as oil, battery, ABS), black screen of the instrument, non-moving speed/revolution pointers, abnormal mileage reset, accompanied by abnormal noises or functional failures (such as power steering assistance).
Initial troubleshooting: First, check the instrument-related fuses, battery voltage to ensure it is normal (≥12.4V), and whether the connectors are loose; if it's a new oil change, confirm if the maintenance reminder has been reset; avoid disassembling the instrument itself; in most cases, reading fault codes (OBD diagnosis) is necessary to locate the true source.
Note: Modern vehicle combination instruments highly rely on network communication. Installing additional equipment, getting waterlogged, being impacted, or having poor grounding (such as corroded common grounding wires) often cause chain failures; if only a few lights are abnormal (such as turn signals), it could be a problem with the bulb or switch, not the instrument itself.
If the instrument continues to malfunction, accompanied by power limit torque or safety system alarms (such as ESP, airbag lights), do not continue driving; it is necessary to tow it to a professional repair shop to read the full vehicle fault codes using a diagnostic tool to avoid misjudgment and replacing a costly instrument without addressing the root cause. For older models (2000–2010), if it is a mechanical speedometer, check if the flexible shaft is broken, bent, or lacking oil; for fuel-injected vehicles, almost all are electronic, and there is no flexible shaft, so the faults are mostly in the electrical/communication category.
"DM-i" or "EV" in "qin-PLUS" refers to the power version identifier， not "letter combination assembly"； the "qin-PLUS" itself does not have a standard component named "letter combination assembly".
"qinPLUS DM-i"： refers to the plug-in hybrid power version (Dual Mode - intelligent)， consisting of a 1.5L engine + electric motor + blade battery， focusing on low fuel consumption and long range.
"qinPLUS EV"： refers to the pure electric version (Electric Vehicle)， fully electric drive， without a fuel engine.
"Letter combination assembly" is not an official term or real component； it might be a misunderstanding of the vehicle tail markings (such as "DM-i" "EV") or certain decorations/protective plates (such as "rear bumper under guard plate" "side skirt")； these markings are only used to distinguish power types and have no functional purpose.
If referring to the chassis or body guard plates (such as engine under guard plate， oil pan guard plate)， their function is to protect key components from stone strikes， corrosion or foreign object damage， but they are not "letter combinations" nor are they standard equipment for all models.
If specifically referring to a plastic part with letters (such as the "DM-i" mark)， it only has a marking or aesthetic function and no mechanical/electrical function. If after disassembly it affects driving， it might be that a structural component (such as the rear bumper， guard plate) was mistakenly removed. It is recommended to compare the actual vehicle position or consult the BYD after-sales service for confirmation.
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