BYD Qin tire pressure sensor is guaranteed for three years. According to the inquiry, we know that BYD's tire pressure detection module, this warranty is the same as the whole vehicle warranty, and the whole vehicle warranty is three years or 1 million kilometers. BYD Auto Co., Ltd. was established on March 21, 1997, registered at No.1, West Qinling Avenue, Caotang Science and Technology Industrial Base, Xi 'an High-tech Zone, and its legal representative is He Zhiqi. Business scope includes projects: metal material manufacturing; Construction engineering machinery manufacturing; Automobile parts and accessories manufacturing; Urban rail transit equipment manufacturing; Electrical equipment manufacturing; Battery manufacturing; Lighting appliance manufacturing; Manufacturing of electrical signal equipment and devices; Mechanical and electrical equipment manufacturing; Electronic component manufacturing; Manufacture of electronic (gas) physical equipment and other electronic equipment; Instrument manufacturing; Electrical equipment repair; Sales of metal materials; Mechanical equipment sales; Wholesale of auto parts; New energy vehicle sales; Sales of electrical accessories for new energy vehicles; Sales of plug-in hybrid engine; Electrical equipment sales; Wholesale of electronic components; Sales of rail transit engineering machinery and parts; Sales of special equipment, key systems and components for rail transit; Sales of wind turbines and parts; Sales of solar thermal power generation products; Sales of advanced power electronic devices; Retail of auto parts; Motor vehicle charging sales; Lighting sales; Import and export of goods; Technology import and export; Domestic freight forwarder; Loading and unloading; General cargo storage services (excluding dangerous chemicals and other items that need permission and approval); Property management; Lease of land use right; Non-residential real estate lease; Mechanical equipment leasing; Packaging service; Engineering and technical research and experimental development; Development of communication signal system for rail transit; Development of rail transit operation management system; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology popularization; Motor vehicle repair and maintenance; Manufacturing of synthetic materials (excluding hazardous chemicals); Sales of synthetic materials; Transport cargo packing service. (Except for the projects subject to approval according to law, independently carry out business activities according to law with the business license) Licensed projects: road motor vehicle production; Installation, renovation and repair of special equipment; Road freight transport (excluding dangerous goods); Accommodation service; Catering service; Road transport of dangerous goods. (Projects that are subject to approval according to law can only be operated after being approved by relevant departments. The specific business projects are subject to the approval results.) BYD Auto Co., Ltd. has invested in 8 companies and has 2 branches.