← Full guide: EV Charger Warranty Claim: Evidence and Escalation

Create a fault-isolation matrix before the technician arrives

Create a fault-isolation matrix before the technician arrives. Check the cause, evidence to keep, recovery steps, and escalation.

Start here

Record whether the fault occurs with one vehicle or multiple compatible vehicles, at one time of day or always, and whether the app remains connected. Note whether the breaker trips, the charger starts then stops, or charging never begins.

What applies to this exact problem

Record whether the fault occurs with one vehicle or multiple compatible vehicles, at one time of day or always, and whether the app remains connected. Note whether the breaker trips, the charger starts then stops, or charging never begins.

Four likely layers

  • Supply: voltage, outage or upstream breaker.
  • Installation: earthing, cable, protection or connection.
  • Charger: internal hardware or firmware.
  • Vehicle/network: handshake, software, app or backend communication.

This matrix helps the service team avoid replacing a charger when the real problem is site wiring—or blaming the electrician when the charger has a known fault.

Do not void the warranty while diagnosing

Follow manufacturer-approved reset procedures only. Opening seals, modifying cables or using unsupported adapters can create safety risk and complicate warranty coverage.

Ask for the diagnosis report

After service, request the fault found, test performed, part replaced and final commissioning result. If the fault returns, the second claim starts with evidence instead of zero.

Escalation should identify the responsible party and exact requested action: electrical correction, hardware replacement, firmware fix or refund. That is much more effective than sending the same generic complaint to installer, manufacturer and consumer helpline at once.

Check these first

  • State the exact expected result and the exact result you have now.
  • Find the official record that owns the result and compare it with your evidence.
  • Change one thing at a time, then verify the final state before moving on.

Fix it in this order

  1. State the exact expected result and the exact result you have now.
  2. Find the official record that owns the result and compare it with your evidence.
  3. Capture vehicle model, VIN, battery/charger serial where available, odometer, warning codes, and the exact symptom.
  4. Ask the authorised service centre for diagnostic findings and the warranty clause used for approval or denial.
  5. Separate normal range variation from a measurable fault using repeatable conditions, charging logs, error codes, or state-of-health evidence.
  6. Keep invoices, job cards, firmware/service history, and photographs of warnings or damage.
  7. For subsidy/incentive issues, verify model eligibility, invoice treatment, registration details, and portal status independently.

Build the proof pack

  • Purchase invoice and warranty
  • Job cards/diagnostic report
  • Charging/range/error evidence
  • Subsidy or portal application record where relevant

Avoid making the case harder

  • Opening or repairing high-voltage components yourself
  • Accepting a warranty denial without the clause/reason
  • Assuming brochure range is guaranteed in every condition

How you know it is really fixed

  • The official record and your real-world result agree.
  • You have enough written evidence to prove the issue is finished if it returns later.

If it is still not fixed

  1. Manufacturer/dealer grievance
  2. Scheme/portal helpdesk when incentive-related
  3. Consumer remedy for unresolved product/service disputes

Official sources from the full guide

Need the complete context?

This page solves one branch. The parent guide covers the full decision, edge cases, alternatives, and related checks.

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