EV evidence, not a mystery score

Record what the EV returned. Keep the limits attached.

ScanWrench is building an owner-authorized flight recorder for charging behavior, range estimates, thermal performance, and intermittent issues. It is read only. It does not collect location or control the vehicle.

Apply for the closed pilot See the evidence demo

Read onlyNo precise locationSigned evidenceOwner controlled

Illustrative simulator evidenceNot a real vehicle result

Window comparisonCharging evidence

Energy in+1.00kWh difference

Charge power+3.70kW maximum

Battery gain+2.0percentage points

Thermal span-1.0C observed

Evidence fingerprint1B38 60A9 22D5 1E93

A difference is not automatically improvement, degradation, repair success, or cause.

The product earns attention by making evidence portable, not by pretending one provider sees everything.

OAuth through the providerPseudonymous vehicle bindingEd25519 passportSHA-256 fingerprint

One complete evidence chain

Before and after, without the verdict theater.

Two signed, non-overlapping observation windows are compared only for the same privacy-preserving vehicle binding.

Earlier window7.08 kWh

Observed charging energy across a one-hour simulator capture.

Charging power: 7.1 kW
Battery gain: 30.0%
Module span: 6.0 C

Same vehicle bindingObserved differenceNo cause assigned

Later window10.80 kWh

Observed charging energy across a second one-hour simulator capture.

Charging power: 10.8 kW
Battery gain: 32.0%
Module span: 5.0 C

Demo boundary

This demonstration is deterministic simulator evidence. Physical Tesla evidence is still unverified and will not replace this label until an owner-authorized vehicle completes the published validation procedure.

Deliberately narrow collection

Useful signals. Less surveillance.

ScanWrench requests a bounded evidence allowlist. Location, saved places, media, occupant data, camera, audio, and general vehicle commands are excluded from the pilot contract.

Battery level and returned energyEstimated and ideal rangeCharging power and energy inPack voltage and currentBrick-voltage extremaModule-temperature extremaIsolation resistance when returnedOdometer and bounded energy-use context

10 to 25 owner pilot

Help establish the first real evidence set.

Selected owners will connect through the provider's own sign-in and key-pairing flow. ScanWrench never asks for a Tesla password. The pilot records success, unavailable signals, disconnects, and limitations with equal weight.

One exact vehicle and software configuration at a time
Bounded recordings up to 72 hours
Stop, disconnect, and delete controls
No public findings below ten distinct vehicles
No claim of manufacturer approval or representative research

Open implementation boundary

A manufacturer can embed the evidence contract without rebuilding ScanWrench.

The EV Evidence Interchange defines provider manifests, privacy-preserving telemetry samples, signed passports, before-and-after comparisons, confidence boundaries, and verification levels. It contains no proprietary OEM definitions and standardizes no remote-control function.

Download the public draft Review the security boundary

Public draft 1.0. Implementation is permitted. ScanWrench trademarks and provider data rights remain separate.

Real findings status

Not published yet.

ScanWrench has not completed a ten-vehicle physical cohort. The public findings endpoint returns unavailable until the privacy threshold is met. We will publish missing data and contrary outcomes, not only flattering results.

Check the machine-readable status