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Whirlpool Washer Lid Switch Replacement - Signs & How-To

4 min read
⚡ Quick Answer

If your Whirlpool washer agitates but won't spin, or stops mid-cycle when the lid is closed, a faulty lid switch is likely. Replacing the switch assembly restores the spin cycle.

Difficulty Intermediate (DIY)
Est. time 15-60 min
Tools Multimeter , nut driver, screwdrivers

Whirlpool Washer Lid Switch Replacement — What This Part Does

The lid switch is a safety interlock mounted in the lid opening on top-load Whirlpool washers. It ensures the washer door is closed while the washer is spinning. When the lid is shut, the switch closes an electrical circuit that allows the machine to enter or continue the spin cycle. If the switch contacts fail or the actuator that presses the switch breaks, the electrical circuit stays open and the washer will not spin even though the lid is down.

Most lid-switch failures are mechanical wear or broken harness wires rather than control-board problems. The switch contacts corrode or lose spring tension over time, or the plastic actuator piece that depresses the switch cracks or shifts out of alignment. Whirlpool sells the lid switch as an assembly with wire harness because the harness and connector are common failure points along with the switch itself.

Jump to Replacement Steps

Signs It Needs Replacing

How to Replace It

  1. Disconnect power by unplugging the washer or switching off the circuit breaker.
  2. Open the control console or cabinet top to access the lid-switch assembly (unplug any top-panel wiring harnesses and remove screws securing the console or wrap-around top, depending on your model).
  3. Locate the lid switch mounted inside the lid opening and press the actuator by hand to feel whether it clicks positively and returns to the open position.
  4. Disconnect the wire-harness connector from the lid switch and use a multimeter set to ohms to test continuity across the switch terminals with the actuator pressed (lid closed) and released (lid open). A good switch reads 0 to 2 ohms when actuated and open circuit when released.
  5. If the switch fails the test, remove the mounting screws (and ground screw if present) that secure the switch and actuator assembly to the cabinet, then lift the old switch out.
  6. Install the new lid-switch assembly by positioning it in the mounting slots or holes, securing it with the original screws, and reconnecting the wire harness to the switch connector until it clicks.
  7. Reassemble the console or cabinet top, reconnect any top-panel harnesses, and reinstall all screws.
  8. Restore power, close the lid, and run a short spin test to confirm the washer now spins only when the lid is fully closed and stops immediately when you lift the lid during the cycle.

The Part You Need

PartNotes
Whirlpool Lid Switch Assembly with Wire HarnessAmazon | Common part numbers are WP3355458, 12001187, WP3949238, and 3949238. Check your washer’s model and serial plate (usually inside the lid opening or on the back panel) and cross-reference it on the Whirlpool parts site or your parts supplier to confirm the exact switch kit for your machine.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you replace the lid switch and verify correct continuity and actuator alignment but the washer still will not spin, the problem may be a broken door-lock circuit on newer models, a faulty lid-lock assembly (on washers with electronic lid locks instead of mechanical switches), a main control board that is not processing the lid-closed signal, or a drive-belt or motor-coupler issue preventing spin. Call a technician if you are uncomfortable working inside the console, if the wiring harness routing is unclear for your model, or if the washer uses an electronic lid-lock system rather than a simple mechanical switch.


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