Will this pump work with my existing washer fluid hose and reservoir?

Yes. This is a direct OEM replacement, so it integrates with your factory washer system without modifications. Your existing hose and reservoir connections will line up.

Do I need to remove the whole washer reservoir to install this pump?

In most cases, the pump is accessible through the top or side of the reservoir without full removal. Your service manual will show the quickest approach for your specific model year.

What if the pump arrives and doesn't activate when I wire it in?

First check that your washer fluid reservoir has adequate fluid and that the electrical connector is fully seated. If the pump still won't turn on, verify power is reaching the connector with a test light before concluding it's defective.