At the inspection, being able to unlock, being able to start and showing no diagnosis anomalies are different observations. A cheap used-car purchase should record them item by item; one starting video must not cover the whole check of the keys and control units.
Preserve the State before the Check First
For a document example such as a used Volkswagen Tiguan, the seller should state any known key loss or instrument or control-unit replacement. A capable and authorized repair party performs the check; the report states the model, the check scope and the items that could not be confirmed, and codes are not cleared without authorization to produce an anomaly-free record.
| Document item | Information to keep | What to do when a contradiction appears |
|---|---|---|
| Key handover | Quantity and the functions verified on each | Check the seller's commitment and lawful replacement arrangements |
| Replacement history | Part source, repair reason and records | Ask the service party to explain fitment and record differences |
| Diagnostic report | Check conditions, anomalies and limitations | Find the cause and keep the later recheck |
An inspection commission can first state the vehicle ownership authorization, the items intended to be viewed and the original state to be preserved, with the capable personnel deciding the executable scope. The seller's explanation of the key and parts history is stored separately; it is not directly recorded as technical fact. Functions not verifiable keep their unchecked state.
Diagnostic reports should state who formed them, which vehicle they correspond to and the changes before and after the operation, with the reason recorded for any later authorized handling. Purchasing does not ask for original prompts to be cleared before the report is made, nor does a brief absence of a detected fault get rewritten into a completely clean history.
Do Not Stretch Technical Records into History Guarantees
No fault detected does not prove that nothing was ever repaired, and a control-unit reading alone cannot determine the complete mileage history. Work involving the anti-theft system or vehicle access permissions must verify the ownership authorization; bypassing the protection is not a method to adopt.
The Nigerian customs import procedure should be checked separately. The identity, admission and reconditioning costs of a low-priced source must each be confirmed per vehicle; a technical inspection report cannot replace these judgments.
Replacement records can be requested from the seller or the party that actually did the work for the source, fitment and check basis; items without materials are listed separately. When safety material is involved, verify the recipient and the lawful purpose and provide only the necessary scope. Any proposal that bypasses the vehicle protection is not a purchasing solution.
The key count and the control-unit checks are recorded separately, and the costs and import conditions are confirmed by the corresponding staff. The report states clearly what it can explain; the complete mileage history is not inferred from a single reading, and identity problems are not ignored because the vehicle starts.
The Seller's Explanation and the Diagnostic Material Conflict
Example only; the contract and the physical vehicle prevail. The seller of a given VIN says the relevant parts were not replaced, but the check material leaves a difference needing explanation. Purchasing can keep both sides' original information, ask a capable service party what the existing evidence can support, then require the seller to supply the genuine history. Do not reach a final characterization from a single clue.
Later results are linked to the original records, and history still unknown continues to be noted. Further lawful checks, when needed, are performed by authorized personnel; the decision on the budget and whether the transaction continues goes to the responsible person. Materials for the customer present only the findings already confirmed; no guarantee of a completely anomaly-free or never-repaired history is manufactured.
FAQ
Can codes be cleared before the inspection report is issued?
The original check state should be preserved; any later operation must record the reason and its effect.
If a control unit was replaced, must the purchase be abandoned?
The lawful source, fitment and repair results need checking; do not characterize it by the replacement fact alone.
What if the seller is unwilling to provide the repair materials?
List the unconfirmed risks and, when necessary, hold off the transaction or arrange an independent check.
Can one key complete all the inspection items?
It can only prove the items tested with it; the other keys and functions still need their own recorded status.
When checking the electronic-system materials of a used car, you can describe the actual key situation and the check scope of the existing diagnostic report through the Starvia contact page or WhatsApp.
Public references: HSE motor vehicle repair safety information; Nigeria Customs Import Procedures. Information checked on: 2026-09-03.