One problem related to windshield wiper/washer switch has been reported for the 1998 Plymouth Voyager. The most recently reported issues are listed below.
Total power shutdown while trying to start. Started 10 minutes later. Various components started failing - door locks, intermittant wiper, rear wiper, rear washer, power mirror. Took to dealer and was told I needed a new bcm. Replaced bcm for $600 and was told that everything had to be repaired! they replace defective bcm 50-60 times a year so that they can tell you your car is not working! what a racket! and apparently the one they replaced had already been replaced before - how many times I don't know. $220 of recommended repairs were not guaranteed to fix the problems either! I reported the details to "customer assistance" and was told they would call back - they didn't. When I called them they said that all assistance was denied! I had to pay $600 so they could tell me what I had already told them! I'll take it to an independent shop where they charge to fix the car.