1. Faulty Turn Signal Switch: The turn signal switch may be faulty, causing it to interfere with the electrical system and disrupt the power supply to the speedometer panel.
2. Electrical Short Circuit: There might be a short circuit in the wiring harness that connects the turn signal switch to the speedometer panel. This can disrupt the electrical signals and cause the lights and controls to turn off.
3. Faulty Instrument Cluster: The instrument cluster itself could be faulty, leading to the loss of power and functionality in the speedometer panel.
4. Computer Module Issue: In some cases, a malfunctioning computer module or body control module (BCM) can disrupt the electrical signals and cause various electrical issues, including the loss of power to the speedometer panel.
To pinpoint the exact cause, it's best to have the vehicle inspected by a qualified mechanic or technician. They can diagnose the issue by performing electrical tests and tracing the faulty component or wiring. Depending on the specific cause, the solution may involve replacing the turn signal switch, repairing the electrical short, fixing the instrument cluster, or reprogramming the computer module.
