Push Switch/Key Unlock Warning Switch Malfunction
Table of contents
B2780 TOYOTA Possible Causes
- Faulty unlock warning switch assembly
- Unlock warning switch assembly wWire harness
- Faulty transponder key ECU assembly
How do I fix code B2780 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B2780 TOYOTA code
The cost of diagnosing the B2780 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
Unlock warning switch ON is not detected when ignition switch is ON.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B2780 TOYOTA Description
This Diagnostic Trouble Code (DTC) will be output if the transponder key Electronic Control Unit (ECU) does not detect that the unlock warning switch is ON even when the ignition switch is ON (under normal condition, the unlock warning switch is ON when the ignition switch is ON).