Hi,
The park switch is located in the wiper motor assembly. The wipers park switch is one part of the circuit. There are two relays which are controlled by the body control module (BCM).
For the wipers to park, the BCM places the circuit in low speed, which leads me to ask, is there any way to make it function properly?
If not, there are a few ways to go. One is to replace the wiper motor (which may or may not fix the issue, scan the can-bus to see if there are codes stored in the BCM (recommended), or start checking relays. I attached a pic below of the under-hood fuse/relay box and highlighted the two wiper relays. If there are other relays with the same part number, switch them to see if it makes a difference, or here is a link that explains how to check the relay and circuit:
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
Let me know what you find or if you have other questions.
Take care,
Joe
See pic below.
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Thursday, January 18th, 2024 AT 10:15 PM