2017-2019 Karma Revero Window Motor: Diagnosis and Replacement Guide

Symptoms of a Failing 2017-2019 Karma Revero Window Motor

While there are no widespread, documented issues specific to the Karma Revero's window motors, they can fail from normal wear and tear like any other vehicle. The symptoms are typically straightforward and consistent with window motor failures in most cars.

• Slow or Sluggish Operation: The window moves up or down much slower than it used to. This often indicates the motor is aging and losing power.
• Grinding or Clicking Noises: Hearing a grinding or whirring sound from inside the door when you press the switch means the motor is running, but a gear inside the motor or on the regulator may be stripped or broken. A clicking sound with no movement can also point to a failed motor.
• Window Doesn't Move, But You Hear a Click: If you hear a faint click from the switch or inside the door but the window doesn't budge, power is being sent, but the motor itself is likely dead.
• Intermittent Function: The window works sometimes but not others. This can be caused by a worn spot on the motor's internal contacts or a loose electrical connection.
• Window Is Completely Dead: No sound and no movement at all. While this can be a failed motor, it's important to first check the fuse and the window switch itself, as they are simpler and cheaper to fix.
• Window Drops Inside the Door: If the window falls down on its own, this is usually a failure of the window regulator's cables or clips, not the motor. However, the motor and regulator are often replaced as a single assembly.

Known Issues, TSBs, and Recalls

As of early 2026, there are no official recalls or Technical Service Bulletins (TSBs) from the National Highway Traffic Safety Administration (NHTSA) specifically for the window motors on the 2017-2019 Karma Revero. While the Revero has had recalls for other components like airbags and door structures, the window lift system has not been identified as a common problem area.

Diagnosing the Problem

Before blaming the motor, perform a few simple checks:

1. Check the Fuse: Consult your owner's manual to find the fuse for the power windows. If it's blown, replacing it may solve the problem. If it blows again, there is a short circuit that needs to be investigated.
2. Test the Switch: Try operating the window from both the main driver's door switch and the switch on the affected door. If it works with one but not the other, the switch is likely the problem, not the motor.
3. The "Bang" Test: With a helper holding the window switch, firmly bang on the interior door panel. Sometimes, this can jolt a worn motor back to life temporarily, confirming it's the source of the problem.
🎬 Watch: A helpful guide on how to replace a window motor.

If these checks don't solve the issue, the problem is most likely the window motor or the regulator it attaches to.

Buying a Used Karma Revero Window Motor

Given the rarity of the Karma Revero, finding new parts can be difficult and expensive. A quality used OEM motor is often the most practical solution. Here’s what to look for:

• Verify Compatibility: The Revero is a low-production vehicle. Ensure the part is explicitly listed for a 2017, 2018, or 2019 model. Also, confirm if the part is for the front, rear, driver's, or passenger's side, as they are not interchangeable.
• Inspect the Connector: Ask for clear photos of the electrical connector. Look for any signs of corrosion (green or white powder), melted plastic, or bent pins. A damaged connector suggests the part may have failed due to water intrusion or an electrical short.
• Check the Gear: The motor has a small gear that drives the regulator. Inspect it for stripped, broken, or excessively worn teeth. A damaged gear will make grinding noises and fail to move the window.
• Buy the Assembly: It is highly recommended to purchase the window motor and regulator as a single, complete assembly. The two parts are designed to work together, and separating them can be difficult. Failure often originates in the regulator's cables, which then over-stresses and burns out the motor. Replacing both at once prevents having to do the job twice.
🎬 See this walkthrough for replacing the motor and regulator assembly together.
• Mileage and Warranty: Choose a part from a lower-mileage vehicle if possible. Always buy from a reputable seller that offers a warranty. This protects you in case the used motor is faulty or fails shortly after installation.

Cost Comparison for Window Motor Replacement

Prices for a niche luxury vehicle like the Karma Revero can be higher than average, and parts availability is limited. The costs below are general estimates and may vary significantly.

Replacement Difficulty: 3/5

Replacing the window motor/regulator assembly is a moderately difficult job for a DIYer. The main challenge is the careful removal of the door panel without damaging the trim, clips, or electrical connectors. The process generally takes 2-3 hours.

General Steps:

1. Disconnect the vehicle's battery.
2. Carefully remove the interior door panel. This usually involves removing screws behind trim pieces, in the door pull, and around the speaker, then prying the panel off its clips.
3. Peel back the weather barrier to access the inside of the door.
4. Temporarily secure the window glass in the 'up' position using strong tape over the top of the door frame.
5. Disconnect the electrical connector from the window motor.
6. Unbolt the window glass from the regulator clamps.
7. Unbolt the window regulator and motor assembly from the door shell.
8. Carefully maneuver the old assembly out through an access hole in the door.
9. Install the new assembly, and perform the steps in reverse.

Frequently Asked Questions (FAQ)