What causes B1249 on a Toyota?

Open or short in the communication circuit to the main body ECU Loose or corroded connector at the double lock door control relay Damaged harness on the communication circuit to the main body ECU Failed double lock door control relay Low system voltage

How do I fix B1249 on a Toyota?

Confirm the code and read freeze frame data Check battery voltage and the charging system Inspect and reseat the double lock door control relay connector Test the communication circuit to the main body ECU for opens and shorts Replace the double lock door control relay only after the circuit tests fail

B1249 Double locking ECU communication stop. The door control relay loses contact with the main body ECU

Q: What does B1249 mean on a Toyota?

B1249. Double locking ECU communication stop. The door control relay loses contact with the main body ECU. Applies to Toyota, Lexus and Scion models that use this code.

Category: Body
Severity: Body Warning Light
Applies to: Toyota, Lexus and Scion models that use this code

What does B1249 mean on a Toyota?

B1249. Double locking ECU communication stop. The door control relay loses contact with the main body ECU. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of B1249

Open or short in the communication circuit to the main body ECU
Loose or corroded connector at the double lock door control relay
Damaged harness on the communication circuit to the main body ECU
Failed double lock door control relay
Low system voltage

How to fix B1249

Confirm the code and read freeze frame data
Check battery voltage and the charging system
Inspect and reseat the double lock door control relay connector
Test the communication circuit to the main body ECU for opens and shorts
Replace the double lock door control relay only after the circuit tests fail