Motor controller replacement
Swap failed motor controller / VCU.
At ev.care, motor controller replacement is the motor & drivetrain job we run when swap failed motor controller / vcu. Swap failed motor controller / VCU. Every measurement is recorded against an OEM baseline so a number on its own can be interpreted in context rather than guessed at. We don't upsell. If the result is "you're fine, come back in a year", that's exactly what we'll write on the report.
What's included
- Old controller diagnostics
- OEM-equivalent or refurb unit
- Software pairing + VIN coding
- Functional test
Why this matters
Why this isn't an optional service: skipping it risks a controller fault that becomes a tow rather than a workshop visit. A ₹19,999 workshop slot today is the cheapest insurance you can buy against that outcome.
How it works
- 1
Drive-unit baseline (current, vibration, sound) is captured first.
- 2
Inverter and motor are tested in their natural operating envelope.
- 3
Mechanical inspection is done with the unit in-place where possible.
What we typically find
From hundreds of inspections — what makes the report.
- Motor bearing healthy — no detectable wear signature
- Inverter capacitors holding to spec under load
- Reduction gearbox quiet under coast and drive
- Coolant temperatures stable across the full power band
How to prepare
- Note when the symptom appears (cold start, regen, hard acceleration)
- Bring a recording of any sound if possible
- Charge to at least 40% so we can do a real-world road test
Equipment we use
- Dyno or controlled road-test loop
- Inverter waveform analyser
- Motor vibration probe
Certifications
- IMI Level 4 EV drivetrain
- ARAI-certified workshop
Transparent pricing breakdown
No hidden charges. This is exactly what makes up your bill.
Labour & instrumentation 6 hours | ₹13,999 |
Consumables & documentation | ₹6,000 |
| Total | ₹19,999 |
What customers say
“Whole drive feels smoother. They explained the controller calibration in plain language.”
“Caught a bearing issue early — saved me a much bigger bill later.”
FAQs
Refurb vs new?+
Refurb is 40-60% cheaper. We disclose origin.
How long?+
Half a day.
Cheaper than dealer?+
Usually 30-50% cheaper for refurb route.
Who needs this
Confirmed controller failure (not driveable, P0AAA-class codes).
What's NOT included (honestly)
- The controller part itself (billed at cost)
Related services
Ready to book motor controller replacement?
Fixed price ₹19,999 — no surprises. Or describe a different problem and we'll match the right service.