B2289 Key collation waiting timeout in the smart key system
What does B2289 mean on a Toyota?
B2289. Key collation waiting timeout in the smart key system. The certification ECU stops hearing the key and the engine may not start. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B2289
- Weak or faulty smart key battery
- Faulty certification ECU
- Open or short on the key communication line
- Corroded ECU connector
- Damaged body harness
How to fix B2289
- Confirm the code with a scan tool
- Try a known good registered key
- Inspect and reseat the certification ECU connectors
- Test the key communication line
- Replace the ECU only after tests fail