B2784Immobiliser antenna coil open or shorted
- Toyota/Lexus code · Body control
- How the car detects it
- The antenna coil around the ignition (or the start button) that reads the key's chip has an open or short circuit, so the key may not be recognised and the engine may not start.
- What you may notice
- Engine may not start
- Security light behaves abnormally
- Likely causes
- PossibleAntenna coil / key amplifier or its wiring
- RareImmobiliser (transponder key) control unit
- Sources
Backed by at least two independent sources.
From Obdaryn's Toyota/Lexus pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.