NEV Fix provides factory-direct access to EPC parts catalogs, repair manuals, wiring diagrams, and ECU pinouts for BYD, Haval, Geely, Changan, NIO, XPENG and 10+ more brands — sourced from Guangzhou and delivered digitally within hours.
Unlike European or Japanese manufacturers, Chinese EV brands have not established official technical portals outside China. Overseas workshops face four compounding barriers:
Repair manuals, EPC parts catalogs, and ECU coding procedures are proprietary and not publicly released. Manufacturers restrict access to authorized dealers inside China.
Even when documentation surfaces, Chinese-language technical terms, wire color codes, and DTC explanations require professional translation and interpretation.
Each Chinese EV brand uses a unique diagnostic protocol. Generic OBD-II scanners cannot access ECU parameters, coding functions, or brand-specific modules.
Chinese EV brands release new models every 6-12 months. Overseas workshops cannot keep up without a continuous technical source inside China.
NEV Fix maintains a direct pipeline to Chinese EV manufacturer technical databases in Guangzhou. Here is how workshops access our resources:
Choose the NEV Fix annual plan (from ¥6,000/year) for unlimited access to our technical documentation library and remote engineer support.
Submit a VIN or model name via WhatsApp. Our engineers retrieve the EPC catalog, wiring diagram, or repair manual from our Guangzhou database.
Documentation is delivered via email, secure portal, or directly inside your diagnostic session chat - typically within 2-4 hours.
If documentation alone is not enough, our certified engineer joins your session for live screen-share guidance through the repair procedure.
Most workshops attempt one of three approaches. Here is how they compare:
| NEV Fix Direct | Official Dealer (China) | Generic OBD-II Scanner | |
|---|---|---|---|
| Repair Manuals | Brand-specific, VIN-matched | Full access (in China) | Not available |
| Wiring Diagrams | Model-year specific | Full access (in China) | Not available |
| ECU Coding Access | Live remote session | Physical presence required | Not available |
| Delivery Speed | 2-4 hours (digital) | 7-21 days (physical) | Instant (limited scope) |
| Language Support | EN/RU/ES/AR/ZH | Chinese only | Limited |
| Annual Cost | ¥6,000 unlimited | High (travel + service) | Low (one-time purchase) |
Our technical database covers 15+ Chinese EV brands. Documentation depth varies from basic system diagrams to full ECU coding procedures:
Document availability varies by model year. BYD and Haval have the most comprehensive coverage. When you submit a VIN-based request, our engineers confirm exactly which documents are available and deliver them within the same session.
Weekly shipments via the Gansu-Kazakhstan corridor. Wiring diagrams delivered digitally within 24 hours; physical parts arrive in 7-15 days to Moscow, Almaty, and Minsk.
Air freight to UAE, Saudi Arabia, and Qatar within 5-10 business days. Arabic-language diagnostic summaries available on request.
Sea freight to EU ports in 15-25 days. Air options available for urgent documentation requests. Materials available in English, Spanish, and French.
Everything overseas workshops need to know about accessing Chinese EV technical documentation.
NEV Fix provides access to factory EPC parts catalogs, repair manuals, wiring diagrams, ECU pinout charts, DTC reference tables, and component location guides. Coverage depth varies by brand — BYD and Haval have the most comprehensive documentation, while newer brands like NIO and XPENG are continuously updated.
Yes. Our database includes model-year-specific wiring diagrams for most popular Chinese EVs sold in the past 5 years. For older vehicles (2018 and prior), coverage may be limited to generic system diagrams. When you submit a request with your VIN, our engineers confirm the exact documentation available before delivering it.
Yes. Our technical support team speaks English, Chinese, Russian, Spanish, and Arabic. Written documentation is primarily in Chinese and English. Russian-language summaries are available for the most commonly requested models exported to Russia and CIS countries.
Standard documentation (wiring diagrams, DTC lists, component guides) is delivered within 2-4 hours during business hours (GMT+8, 09:00-18:00). Rush delivery within 30 minutes is available for active diagnostic sessions at no extra charge for annual subscribers.
ECU software updates and calibration files are available for select brands and modules through our remote diagnostic sessions. This requires a live connection via Smartlink C + Gateway. Firmware updates are performed under engineer supervision. Availability varies by brand due to manufacturer restrictions.
Unlimited access to technical documentation is included in the NEV Fix annual subscription (¥6,000/year). There is no per-document charge for standard resources. Complex or rare documentation requests may incur a one-time research fee of ¥200-500, quoted before proceeding.
Yes. One-time document purchases start at ¥700 per document. However, one-time purchases do not include remote diagnostic support or parts sourcing. For workshops that service 2+ Chinese EVs per month, the annual subscription provides significantly better value.
NEV Fix's remote diagnostic and documentation system requires the Smartlink C + Gateway hardware set. The Smartlink C adapter connects to the vehicle's OBD-II port; the Gateway bridges the connection to our server in Guangzhou. Hardware is available for purchase at ¥2,500 (one-time).
Most standard diagnostic tools (Launch X-431, Autel, OBDfix) are compatible with NEV Fix's remote support sessions. However, full ECU parameter access, live CAN bus data streaming, and module coding require Smartlink C + Gateway. Contact us to confirm compatibility before subscribing.
NEV Fix is the reliable technical resource partner for independent workshops outside China. We bridge the gap between Chinese EV manufacturers and overseas repair shops through direct access to factory documentation, certified engineer support, and global parts sourcing — all from one annual subscription.