Do I need to drain the old fluid before swapping out the pump?

Yes — drain your reservoir completely to avoid spilling fluid during removal. You can reuse existing washer fluid if it's clean, or top off fresh fluid after installation.

Will this pump work if my reservoir is damaged or cracked?

The pump mounts to the reservoir, so if your reservoir has leaks, the pump won't seal properly. Inspect your reservoir before ordering — you may need a replacement tank alongside this pump.

What if the warning light doesn't turn on after installation?

Check that the sensor connector is fully seated in the pump and the electrical harness is clicked into place at the dash. If the light still doesn't trigger, the issue may be upstream in the vehicle's dashboard circuit — test with a basic multimeter on the connector pins to confirm the sensor is firing.