1. Blown Fuse: Check the fuses in your vehicle's fuse box to see if any are blown. If the rear wiper fuse is blown, replace it with a new fuse of the same amperage.
2. Faulty Relay: The rear wiper relay may be faulty. This is a small electrical component that controls the flow of power to the rear wiper motor. If it fails, the wiper will not work.
3. Worn or Disconnected Wiring: The wiring that connects the rear wiper motor to the power source may be worn, damaged, or disconnected. This can prevent power from reaching the motor and will cause the wiper to stop working.
4. Faulty Switch: The switch that controls the rear wiper may be faulty. If it fails, the wiper will not turn on when the switch is activated.
5. Defective Wiper Motor: The rear wiper motor itself may be defective. If this is the case, the wiper will not work even if all of the other components are functioning properly.
To diagnose the problem, you will need to perform some basic troubleshooting. Start by checking the fuses and relay. If these are both okay, then you will need to inspect the wiring and the wiper motor. If you are not comfortable performing this type of work, you may want to take your vehicle to a qualified mechanic for diagnosis and repair.
