2025-2026 Lucid Gravity Motor Control Module: Programming, Trim Levels, and Replacement Facts
This guide covers the critical information you need before replacing the Eng/Motor Cont Mod on a 2025-2026 Lucid Gravity, focusing on mandatory programming and trim-specific compatibility.
- A replacement Motor Control Module MUST be programmed by a Lucid Service Center to function; it is not plug-and-play.
- Modules are likely specific to trim levels (Touring, Grand Touring) due to different power outputs; you must match the OEM part number exactly.
- Before purchasing a used module, contact a Lucid Service Center to confirm they will program a customer-supplied used part and to get a cost estimate.
- As the Gravity is a new vehicle, many apparent hardware issues may be software-related; ensure your vehicle has the latest OTA updates before pursuing repairs.
Critical Warning: This Part Is Not Plug-and-Play
The single most important fact to understand about the Lucid Gravity's Motor Control Module is that it is not a simple swap. Any replacement module, whether new or used, absolutely must be programmed by a Lucid Service Center or a Lucid-certified repair facility to function.
This module is a core component of the vehicle's security and powertrain management system. During programming, the module is digitally 'paired' to your vehicle's specific Vehicle Identification Number (VIN). This process ensures that all related systems, including the high-voltage battery, immobilizer, and driver controls, can communicate securely. Without this step, the vehicle will not enter a 'Ready' state and will be undrivable. There are currently no known aftermarket tools or independent procedures to perform this programming; it requires proprietary Lucid diagnostic equipment.
Symptoms of a Failing Motor Control Module
As the 2025-2026 Lucid Gravity is a new vehicle, widespread data on long-term failures is not yet available. However, based on the function of the motor control module in electric vehicles, symptoms of failure would be severe and immediately noticeable. Early software glitches have been reported on new Gravity models, which can sometimes mimic hardware failure. Always ensure 🎬 Watch: Interview on how Lucid fixed early software issues your vehicle's software is up to date before diagnosing a hardware fault.
- Complete No-Start/No-Drive Condition: The most common symptom. The vehicle will not power on or enter the 'Ready' state, and you will be unable to select Drive or Reverse.
- Sudden Loss of Power While Driving: The module may fail while the vehicle is in motion, resulting in a complete and sudden loss of propulsion. This is a major safety risk.
- Error Messages on the Dash: You will likely see critical powertrain-related warnings, such as "Powertrain Fault," "Service Vehicle Soon," or other high-voltage system alerts.
- Erratic Acceleration or Power Delivery: The vehicle may exhibit jerky or unpredictable behavior before a complete failure.
Variant & Trim Level Compatibility
Warning: The Motor Control Module is likely specific to the vehicle's trim level and powertrain configuration. The Lucid Gravity is offered in different trims with vastly different power outputs, such as the Touring (560 hp) and Grand Touring 🎬 Watch: Deep dive into the Gravity powertrain and specs (828 hp). A module from a Grand Touring model will likely not be compatible with a Touring model, and vice-versa. The part number must match your vehicle's original module exactly.
Always verify compatibility using the exact OEM part number from your original unit. The provided part number is P21K3440009. Do not purchase a used module without confirming it is the correct number for your specific trim and model year.
| Trim Level | Horsepower | Drivetrain | Compatibility Note |
|---|---|---|---|
| Touring | 560 hp | AWD | Module likely calibrated for this specific power output. |
| Grand Touring | 828 hp | AWD | Module likely calibrated for this specific power output. |
| Dream Edition | 1070 hp | AWD | Module likely calibrated for this specific power output. |
Buying a Used 2025-2026 Gravity Motor Control Module
Given the high cost of new electronic modules, a used OEM part can be a cost-effective solution. However, due to the strict programming requirements, you must take extra precautions.
- Verify the Part Number: The most crucial step. The part number on the replacement module must exactly match the one on your original part. The known OEM part number is P21K3440009.
- Plan for Programming: Before you buy the part, contact your nearest Lucid Service Center. Inform them that you are purchasing a used module and confirm they are willing and able to program it to your vehicle. Ask for a quote for the programming labor.
- Inspect the Part: When the used module arrives, carefully inspect the housing for any cracks, signs of heat damage, or physical impact. Check all electrical connectors for corrosion, bent pins, or moisture damage.
- Source is Important: Purchase from a reputable seller that provides the VIN of the donor vehicle. Avoid parts from vehicles with flood damage or severe collision damage, as this can cause unseen electronic issues.
Known Issues, TSBs, and Recalls
As of mid-2026, the known recalls for the Lucid Gravity are not directly related to the motor control module itself but involve other vehicle systems.
- NHTSA Recall 26V192000: Affects 2025-2026 models for insufficient welds on the second-row seat lap belt anchor brackets.
- NHTSA Recall 26V018000: A software issue where the rearview camera image may not display. This is typically resolved with an over-the-air (OTA) software update.
- NHTSA Recall 25V855000: Incorrect front seat backrest covers could prevent side airbags from deploying correctly on some 2026 models.
Early owners have reported various software glitches related to infotainment, key detection, and other systems, which Lucid has been addressing through OTA updates.
🎬 See: Owner's update on Gravity software bugs and serviceCost of Replacement
Pricing for this specific part is not yet widely available. The following costs are estimates based on similar high-end EV modules, like those in the Lucid Air.
| Part/Service | Estimated Cost | Notes |
|---|---|---|
| New OEM Module | $2,000 - $4,000+ | Must be purchased and quoted through a Lucid Service Center. |
| New Aftermarket | Not Available | Aftermarket options are not expected for this type of proprietary, high-tech component. |
| Used OEM Module | $700 - $1,500 | Price depends heavily on availability and condition. Still requires expensive programming. |
| Shop Labor (Installation & Programming) | $400 - $800+ | Labor for physical installation plus the mandatory programming fee at a Lucid Service Center. |
Frequently Asked Questions (FAQ)
Does a used 2025-2026 Lucid Gravity motor controller need to be programmed?
Yes, absolutely. All replacement motor control modules, new or used, must be programmed by a Lucid Service Center. The vehicle will not run without this step.
Can my local mechanic or an independent EV shop replace this module?
While a qualified technician might be able to physically install the module, they will not be able to program it. The final, mandatory programming step requires proprietary Lucid software and tools, making a visit to a Lucid Service Center unavoidable.
Will a module from a Grand Touring work in my Touring model?
It is extremely unlikely. The different trim levels have different power outputs and software calibrations. You must match the OEM part number from your original module exactly to ensure compatibility.
What happens if I install the module without programming it?
The vehicle's security system will not recognize the new module, and it will not be able to communicate with the rest of the powertrain. This will result in a no-start condition, and the vehicle will be completely immobile.
Helpful Videos
Technical Specifications
OEM Part Numbers: P21K3440009
Integrates with Lucid's 900V+ electrical architecture. Manages power flow from the high-voltage battery to the AC synchronous electric motors.
We Have This Part in Stock
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.
- Lucid Gravity:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Critical Warning: This Part Is Not Plug-and-Play
- Symptoms of a Failing Motor Control Module
- Variant & Trim Level Compatibility
- Buying a Used 2025-2026 Gravity Motor Control Module
- Known Issues, TSBs, and Recalls
- Cost of Replacement
- Frequently Asked Questions (FAQ)
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