my Skoda Octavia's warning lights won't turn off, what to do

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench
• Disconnect the negative battery terminal to prevent electrical shorts while working on the vehicle.

2. Retrieve and Analyze Error Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Turn the ignition to the "ON" position without starting the engine.
• Read and record any error codes displayed, which will help identify specific issues.

3. Inspect Electrical System

• Battery Check:
  • Use a multimeter to measure the battery voltage (should be around 12.6 volts when fully charged).
  • Inspect battery terminals for corrosion and ensure they are tight.
• Alternator Testing:
  • Start the engine and measure the voltage at the battery terminals; it should read between 13.7 to 14.7 volts.
  • If the alternator isn’t providing sufficient voltage, replace the alternator.

4. Fluid Level Check

• Check engine oil, coolant, and brake fluid levels.
• If any fluids are low, top them off with the appropriate type as specified in the owner’s manual.

5. Reset Warning Lights

• After addressing any identified issues, clear the error codes using the OBD-II scanner.
• Reconnect the negative battery terminal and turn on the ignition to see if the warning lights turn off.