2014-2020 Mitsubishi Outlander Electric Steering Motor: Stiff Steering & Warning Light Fix
Diagnosing the common causes of a stiff steering wheel and the 'Power Steering Service Required' warning light on 2014-2020 Mitsubishi Outlander models.
- The most common failure symptom is a sudden loss of power assist and a 'Power Steering Service Required' warning light.
- This part is an electric motor (8633A108) for gasoline Outlanders only; it does not fit the PHEV hybrid model.
- A new OEM motor is very expensive (over $1,700), making a warrantied used OEM part ($100-$250) the most cost-effective solution.
- After replacement, a steering angle sensor calibration with a scan tool is recommended for proper function.
Understanding the Electric Power Steering (EPS) System
If you're driving a 2014-2020 Mitsubishi Outlander with a gasoline engine, your vehicle is equipped with an Electric Power Steering (EPS) system. This is a significant change from older hydraulic systems. There is no power steering pump, no belts, and no fluid to check or replace. Instead, an electric motor assists your steering. This motor, part number 8633A108, is mounted on the steering column inside the cabin. When this motor fails, the most common symptom is a sudden loss of power assist, making the steering wheel very difficult to turn, especially at low speeds.
Compatibility Warning: This electric power steering motor is for gasoline engine models (2.4L and 3.0L) only. It does not fit the Outlander PHEV (Plug-in Hybrid) models, which use a different system. Always verify compatibility by matching the part number from your original unit before ordering.
Symptoms of a Failing Power Steering Motor
Failure of the EPS motor can be sudden or intermittent. Pay attention to these specific signs:
- Stiff or Heavy Steering: The most common symptom is a sudden loss of power assist, making the steering wheel feel extremely heavy, similar to trying to steer an old car without power steering. This is most noticeable when parking or driving at low speeds.
- EPS Warning Light: The dashboard will display a "Power Steering Service Required" message or an amber warning light shaped like a steering wheel with an exclamation mark. 🎬 Watch: How to troubleshoot and reset the EPS warning light.
- Intermittent Failure: The power assist may work sometimes and fail at other times. It might fail after starting the car and then begin working again later. Some owners have reported that temporary issues can sometimes be linked to a poor electrical connection or a system glitch that resets.
- Whining or Grinding Noises: While less common than a complete loss of assist, you might hear a whining, grinding, or clicking noise from the steering column area (under the dashboard) when turning the wheel. This can indicate the electric motor is struggling or has internal gear damage.
- Vehicle Pulling to One Side: In some cases, a failing sensor within the EPS system can cause uneven assistance, making the vehicle feel like it's pulling to one side. 🎬 See how a faulty steering angle sensor affects your Outlander.
Known Issues, Recalls, and Technical Service Bulletins (TSBs)
While there are no widespread, major recalls in the US for the EPS motor on the 2014-2020 Outlander, some related service information exists:
- No US Recalls for EPS Motor: Searches for NHTSA recalls do not show a specific campaign for the failure of this electric motor in the 2014-2020 model years. A recall for 2013 models (SR-14-006) concerned a hydraulic power steering line and does not apply to this electric system.
- Australian Recall: An early third-generation Outlander recall in Australia did mention the potential for the EPS computer to fail, leading to increased steering effort, confirming this type of failure is a known possibility for the platform.
- TSB TSB-16-37-001: This bulletin addresses a clicking or creaking noise from the steering wheel area, but the cause is the clock spring rubbing, not the EPS motor itself. The fix is to apply special grease.
- TSB TSB-17-32-001: This TSB updates the clamping torque specifications for the steering gear when the front crossmember is removed for service.
Buying a Used Power Steering Pump
Given the high cost of a new OEM motor, a used unit from a reputable recycler is an excellent value. Here’s what to look for:
- Verify the Part Number: The most critical step is to match the OEM part number. For the 2014-2020 gas Outlander, the primary number is 8633A108. Do not purchase a part without confirming this number.
- Inspect for Damage: Check the electrical connectors for any bent pins, corrosion, or damage. Inspect the motor housing for any cracks or signs of heavy impact. Ensure all mounting points are intact.
- Mileage Isn't the Whole Story: Unlike mechanical wear parts, the life of an electric motor isn't always tied directly to vehicle mileage. A motor from a lower-mileage vehicle is generally preferable, but factors like electrical system health and lack of water intrusion are just as important. Failures can occur at various mileages and are not concentrated in a specific range.
- Source Matters: Purchase from a supplier that offers a warranty and has a good reputation. This provides a safety net in case the used part is also faulty.
- Why Used OEM is a Good Choice: For a complex electronic part like this, a used OEM motor is often more reliable than a new, unproven aftermarket alternative. Aftermarket options for this specific column-mounted motor are not common, and the OEM part was designed and tested for the vehicle's specific software and electrical loads.
Cost Breakdown for Replacement
Replacing the EPS assist motor involves significant cost, primarily due to the price of the part itself.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Motor | $1,700 - $2,100 |
| New Aftermarket Motor | Not commonly available |
| Used OEM Motor | $100 - $250 |
| Shop Labor | $220 - $350 (1.5-2.0 hours) |
Pro Tip: After replacing the EPS motor, the system may require calibration. A TSB for a related procedure notes that steering wheel sensor calibration is necessary after reinstalling the steering wheel. It's wise to have a professional with a compatible scan tool perform this to ensure proper operation.
🎬 Watch: Step-by-step steering angle sensor calibration using a scan tool.Frequently Asked Questions (FAQ)
Can I drive my Outlander with a failed power steering motor?
You can, but it is not recommended and can be dangerous. The steering will be extremely difficult to turn, especially at low speeds, requiring significant physical effort. This can make it hard to react quickly in an emergency or navigate parking lots safely. It is best to have the vehicle towed for repair.
Is this a DIY-friendly repair?
This is a moderately difficult repair. It involves working under the dashboard in a tight space, removing trim panels, and disconnecting the steering shaft. Special care must be taken with the clock spring to avoid damaging it. While mechanically straightforward, the need for a final system calibration may require a trip to a shop. The difficulty is around 3 out of 5.
Why did my power steering start working again?
Intermittent failures are common with electronic parts. The issue could be a loose electrical connector, a temporary software glitch, or an internal fault in the motor that only appears under certain conditions (like temperature changes). If the warning light came on, a fault code is stored in the system, and the problem will likely return.
Do I need to program the new power steering motor?
While a full "programming" might not always be required when using an identical used OEM part, a calibration of the steering angle sensor is highly recommended to ensure the system works correctly and provides the right amount of assist. This procedure is done with a professional diagnostic scan tool.
Helpful Videos
Technical Specifications
OEM Part Numbers: 8633A108
Electric motor mounted to the steering column. For gasoline engine models only. Integrated control unit.
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Mitsubishi Outlander: