Engine-Codes - Lexus - B2780 Lexus

B2780 Lexus Code - Push Switch / Key Unlock Warning Switch Malfunction

- Code Popularity: 7,990 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2780 Lexus?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Unlock Warning Switch Assembly
  • Unlock Warning Switch Assembly harness is open or shorted
  • Unlock Warning Switch Assembly circuit poor electrical connection
  • Faulty Transponder Key ECU Assembly
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How to Fix the DTC B2780 Lexus?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B2780 Lexus code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the B2780 Lexus Code Mean?

This Diagnostic Trouble Code (DTC) is stored if the Transponder Key ECU Assembly does not detect that the Unlock Warning Switch Assembly is on even when the ignition switch is ON. Under normal conditions, the Unlock Warning Switch is ON when the ignition switch is ON.

B2780 Lexus Code - Push Switch / Key Unlock Warning Switch Malfunction

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