Why is my Audi A4 avant rear washer not working?

The AudiA4 Avant rear washer not working may be caused by a clogged nozzle, failed washer pump or a leak in the washer hoses. The first thing You want to do is check the fluid level and see if there is enough fluid. You will then turn the washer on and listen to see if You hear the pump working or running if You hear the pump running You will then know it is a clog or a damaged hose. There could also be a wiring issue which You can follow the wiring harness to see if there is any damage or short in the wiring. The cost will vary depending on the problem but a replacement is listed as $50 - $75 depending on if it's an aftermarket or OEM product.