ServiceNomad RV · Knowledge
RV Entry Steps Click But Don't Move
When RV electric entry steps make a clicking sound but don't extend or retract, it typically indicates a motor or mechanical issue. The clicking usually comes from the motor contactor or relay engaging but the motor itself isn't turning—either because the motor has failed, the mechanism is binding, or the motor isn't receiving adequate power. Understanding what causes this symptom helps you determine whether it's an electrical or mechanical problem.
What the Clicking Sound Indicates
Electric RV steps use a DC motor controlled by a relay or contactor. When you open the door (or press the manual switch), the controller sends power to the relay, which closes with an audible click. This energizes the motor circuit. If the motor is healthy and the mechanism is free, the motor turns and the steps extend. If you hear the click but the steps don't move, the relay is working but the motor isn't responding. The clicking confirms the control circuit is functioning—the door switch, controller, and relay are all doing their jobs. The problem is downstream: either the motor isn't receiving power (wiring fault), the motor has failed electrically, or the mechanism is bound and preventing motion.
Motor Failure and Electrical Testing
The step motor can fail internally due to worn brushes, shorted windings, or seized bearings. A failed motor may hum, buzz, or produce no sound at all when energized. A technician will use a multimeter to test whether voltage is present at the motor terminals when the relay clicks. If voltage is present (typically 12V DC) but the motor doesn't turn, the motor is likely failed. They'll also test motor resistance and check for shorts to ground. If the motor tests bad, replacement is necessary. Step motors are specific to the manufacturer (Kwikee, Torklift, Lippert, PowerGear, etc.) and model, so proper identification is important. In some cases, the motor can be rebuilt or brushes replaced, but full replacement is often more cost-effective.
Mechanical Binding and Obstruction
If the motor is receiving power and tests electrically sound but still doesn't turn, the mechanism is likely binding. Common causes include bent arms, worn pivot points, debris jammed in the linkage, or the steps have been manually forced into position and are stuck. You may be able to manually move the steps (by hand or with a tool) to feel for resistance or binding. A technician will inspect the step mechanism, lubricate pivot points and bushings, and check for bent or damaged arms. They'll also verify the steps are properly aligned and not rubbing against the RV body or other obstructions. If binding is severe, components may need straightening or replacement. Proper lubrication and alignment often restore function without motor replacement.
Wiring and Connection Faults
Even if the relay clicks, corroded connections or damaged wiring between the relay and motor can prevent adequate current from reaching the motor. High resistance at connections causes voltage drop—the motor receives some voltage but not enough to turn under load. This is especially common at the motor terminals, where exposure to road spray and moisture causes corrosion. A technician will inspect all connections, clean terminals with a wire brush and dielectric grease, and test voltage drop across connections under load. They'll also check the ground connection—a poor ground can cause the motor to receive insufficient power even if the positive side is good. Cleaning and securing connections often resolves no-motion issues without further repair.
💡 Prevention Tips
- Lubricate step pivot points and linkages annually to prevent binding and motor strain.
- Inspect step wiring and connections for corrosion and clean as needed to maintain good electrical contact.
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