C1249 Toyota RAV4
The C1249 error code on a Toyota RAV4 typically refers to an issue with the Brake Light Switch Circuit, a critical component within the ABS (Anti-lock Braking System) and VSC (Vehicle Stability Control) system. This code often indicates that the ABS module has detected a problem with the input from the brake light switch or an inconsistency in the brake light circuit.
Common Causes of C1249:
- Faulty Brake Light Switch:
- A common cause of this code is a malfunctioning brake light switch, which might not send the proper signal to the ABS or VSC system.
- Damaged or Corroded Wiring:
- Corrosion, damage, or a loose connection in the wiring of the brake light switch can interrupt the circuit, triggering the code.
- Blown Fuse:
- A blown fuse in the brake light circuit can cause a loss of communication between the brake light switch and the ABS system.
- Faulty ABS/VSC Control Module:
- In rare cases, a malfunction in the ABS or VSC control module can cause this error code.
- Aftermarket LED Lights:
- If the brake lights have been replaced with aftermarket LED lights, the change in electrical resistance could trigger the C1249 code.
Symptoms:
- ABS/VSC Light On: The ABS and VSC warning lights may be illuminated on the dashboard.
- No Brake Lights: The brake lights may fail to illuminate when the brake pedal is pressed.
- Loss of ABS Functionality: In some cases, the ABS system may be disabled until the issue is resolved.
Troubleshooting and Solutions:
- Check Brake Lights:
- Press the brake pedal and check whether the brake lights illuminate. If they don’t, it indicates a problem with the brake light switch or wiring.
- Inspect the Brake Light Switch:
- The brake light switch is typically located near the brake pedal. Check for physical damage, loose connections, or corrosion.
- Test the switch using a multimeter to ensure it is functioning properly. If it’s faulty, replace it.
- Check Wiring and Connections:
- Inspect the wiring and connectors from the brake light switch to the ABS module for any signs of damage, corrosion, or loose connections. Repair or replace damaged wiring.
- Check Fuses:
- Locate the fuse related to the brake light circuit (refer to the owner’s manual) and check if it’s blown. Replace if necessary.
- Scan and Clear Codes:
- After repairing the issue, use an OBD-II scanner to clear the C1249 code and see if the warning lights disappear. If the code persists, further diagnostics may be needed.
If these basic steps don’t resolve the issue, it might be necessary to have a professional mechanic inspect the vehicle, especially if there’s a possibility of a control module malfunction.