Handling claims with an overseas exporter works best when expectations are set before payment. Prevention: put the inspection standard, photo/video evidence requirements, and a dispute clause into the sales contract. Keep all chat records and payment receipts. Typical process if issues arise: 1) Notify the exporter within 48-72 hours of delivery with photos/videos as evidence. 2) Most disputes fall into two buckets: shipping damage (handled via marine insurance — this is why insurance matters) or undisclosed mechanical defects (handled per contract, often via partial refund, spare parts, or repair cost sharing). Realistic expectations: exporters rarely accept returns, so negotiate compensation instead. A reputable company will usually cover reasonable repair costs for defects confirmed to pre-exist shipment. Tip: for higher-value cars, hire a local third-party inspection at destination as final evidence — it strengthens any claim significantly.

Always rely on the original factory network data from the 4S store. Third-party platforms may have delays or errors when capturing data (such as incorrect VIN entry). In case of a conflict, we rely on physical verification of the actual vehicle to resolve the data discrepancies.

It's extremely difficult. Unauthorized modifications can lead to module current overload protection, resulting in a lock. In China, you need to use the factory online engineer account to reprogram it. It's basically impossible to perform online decoding overseas. We strongly warn against blindly modifying the electrical systems of modern integrated circuit vehicles.