what does the B2799 code mean for my Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to avoid electrical shorts during repair.

2. Key Fob Battery Replacement

• Remove the key fob cover using a small flathead screwdriver.
• Replace the old battery with a new CR2032 battery, ensuring correct polarity.
• Reassemble the key fob and test functionality.

3. Immobilizer System Inspection

• Locate the immobilizer module (usually near the steering column).
• Disconnect the connectors and inspect for corrosion or damage.
• Clean connections with electrical contact cleaner.
• Reconnect and ensure all connections are secure.

4. Key Fob Reprogramming

• Use the vehicle's onboard programming procedure to reprogram the key fob:
  1. Insert the key into the ignition and turn it to the "ON" position without starting the engine.
  2. Press the lock button on the key fob for 1 second, then release.
  3. Turn the key to the "OFF" position and remove it.
  4. Test the key fob to ensure it operates correctly.