What would cause your rear wiper and defroster to suddenly stop working at the same time?

* Blown fuse: The rear wiper and defroster share a common fuse, so if the fuse blows, both will stop working. Check the fuse box and replace the blown fuse if necessary.

* Faulty switch: The switch that controls the rear wiper and defroster could be faulty. Try turning the switch on and off several times to see if it makes any difference. If it doesn't, the switch may need to be replaced.

* Wiring issue: There could be a wiring issue that is preventing power from getting to the rear wiper and defroster. Inspect the wiring for any damage and repair any that you find.

* Faulty motor: The rear wiper motor or defroster motor could be faulty. Check the motors for any signs of damage and replace them if necessary.