B2780 2018 Toyota RAV4 Code - Push Switch / Key Unlock Warning Switch Malfunction

Code B2780 indicates a malfunction in the Push Switch or Key Unlock Warning Switch, which is part of the vehicle's keyless entry and start system.

Typical symptoms include the inability to start the vehicle, keyless entry not functioning properly, or warning lights appearing on the dashboard.

The code may be triggered by a faulty push switch, key unlock warning switch, damaged wiring, poor electrical connections, or a malfunction in the Body Control Module (BCM).

Use an OBDII scanner to confirm the code, inspect the push switch and key unlock warning switch for damage, and check the wiring and connectors for corrosion or loose connections.

While the vehicle may still be drivable, the issue could prevent the engine from starting or compromise the keyless entry system, so it’s best to address it promptly.

Repairs may include replacing the push switch or key unlock warning switch, repairing or replacing damaged wiring, or reprogramming the Body Control Module if necessary.

Repair costs can vary but may range from $100 to $300 for parts and labor, depending on the specific issue and local labor rates.

A dead key fob battery is unlikely to directly cause this code but could contribute to symptoms like keyless entry issues. Replacing the battery is a good first step.

You’ll need an OBDII scanner, a multimeter to check electrical connections, and possibly a wiring diagram for the vehicle.

While a dealership can provide specialized diagnostics, a qualified independent mechanic with the right tools can also repair the issue effectively.