My wipers & turn signals don't work.

most likely a bad switch, the turn signal lever/stalk is the switch for all three functions, wiper, wash, turn signal.

Are they all on the turn signal arm

check wiper relay

Due to your first sentence, your problem sounds like it is in the actual switch. If it were a bad motor you would have experienced it stopping in the "on" position.

Check the connectors to make sure they are not getting wet or leaking, this can cause corrsion on the terminals.and intermittent operation. When it is open, fill the cavity with dielectric grease to displace any air and to occupy space where water may otherwise collect.

Check the harness as well for abraided wiriing or broken grounding wires. Also make sure the grounding wires are attached to clean spot on the body including those for the turn signals. Also check to make sure the main bulkhead harness connection through the firewall is soundly attached and clean. it would not hurt to fill those cavities with dielectric grease as well for the same reasons as above.

Where ground wires come together should also be inspected for corrosion and broken connections. And for added measure- replace the fuse. Even if it looks good, these can age and become intermittent.

The intermittent function for your wipers is controlled by the wiper control amplifier. This is an integral part of the wiper (combination) switch and is serviced only by replacing the switch assembly.

Any luck with this?? I just bought a 99 avant quattro myself and when I use the wipers they don't re-dock.. Intermittent setting stop in the up right position when they are paused ..

sounds like you have a bad multi function switch ( the wiper switch that is also a turn signal switch)

sould be wiper moter is failing or plastic clips are wearing out.

try replacing the wiper relay

or could be a faulty wiper intermittent part of the switch