what does the B2799 code mean on my Toyota RAV4

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is in a well-ventilated area.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Key Fob Inspection and Replacement

1. Remove the key fob casing using a small flathead screwdriver.
2. Inspect the battery for corrosion or leakage.
3. Replace the battery with a new one (typically a CR2032).
4. Reassemble the key fob casing and ensure it clicks securely.

3. Wiring Inspection

1. Locate the immobilizer control unit under the dashboard.
2. Visually inspect all wiring and connectors for fraying, damage, or corrosion.
3. Use a multimeter to check for continuity in the wires leading to the immobilizer unit.
4. Repair or replace damaged wiring as necessary.

4. Ignition Switch Test

1. Remove the steering column cover using a socket set.
2. Disconnect the wiring harness from the ignition switch.
3. Use a multimeter to test for proper voltage and continuity.
4. Replace the ignition switch if it fails to meet specifications.

5. Reconnect Battery and Test

1. Reconnect the negative battery terminal.
2. Attempt to start the vehicle with the key fob.
3. Observe the dashboard for the security light.