2017-2019 Karma Revero Door Control Module: Programming, Failures, and Replacement
This guide covers the essential programming requirements, failure symptoms, and replacement costs for the door control module in the 2017-2019 Karma Revero.
- A replacement Door Control Module MUST be programmed by a Karma-authorized technician; it is not a DIY-friendly part.
- Used OEM modules are the most viable replacement option, but the part number must match your original module exactly.
- Failure symptoms are typically isolated to one door and include dead switches for windows, locks, and mirrors.
- Before replacing the module, always inspect the door wiring harness for broken wires, as this is a common failure point.
Critical Programming & Software Requirements
Warning: A replacement Door Control Module for a 2017-2019 Karma Revero is NOT a plug-and-play part. The module must be programmed to the vehicle by an authorized Karma service provider or a specialized independent shop with access to Karma's diagnostic tools and software.
Karma vehicles rely on specific software versions, often referred to as "Baselines" (e.g., BL1035, BL1061). When a new or used module is installed, it must be flash programmed using the proprietary "KarmaSync tool" to load the correct software for the car's VIN and options. This process ensures the module can communicate correctly with the rest of the vehicle's electronic systems. Some updates may even be performed Over-the-Air (FOTA), but this still requires a technician to initiate the process with Karma's Technical Services Support (TSS) group.
Attempting to install a module without proper programming will result in it not functioning. The vehicle's 12V battery must also be connected to a stable power supply maintaining over 12.5 volts during the entire flashing procedure to prevent module damage. Due to these specific requirements, DIY replacement is not feasible.
Symptoms of a Failing Door Control Module
When a Door Control Module begins to fail, the symptoms are usually confined to the specific door where the module is located. You may experience one or more of the following issues:
- Inoperative Controls: The power window, door lock, and mirror adjustment switches on the affected door stop working entirely. Controls for other doors may still function from the driver's master switch panel.
- Erratic Behavior: The window may open or close on its own, locks may cycle unexpectedly, or the side mirror may not fold/unfold with the rest.
- Complete Loss of Function: In some cases, all electronic functions in the door, including the speaker or interior lights, may go dead. This can sometimes be mistaken for a wiring issue.
- Communication Fault Codes: A professional scan tool may find Diagnostic Trouble Codes (DTCs) like U0199 (Lost Communication With Door Control Module 'A') or other U-series (network communication) codes.
Pro Tip: Before condemning the module, check for simpler causes. On related Fisker vehicles, some owners report that a vehicle "sleep reset" can temporarily resolve software glitches causing similar symptoms. Also, inspect the wiring harness that passes between the door and the car's body; broken wires in this flexible section are a very common cause of door electronic failures on all makes and models.
Known Issues, TSBs, and Recalls
As of this writing, there are no specific recalls or Technical Service Bulletins (TSBs) from the NHTSA that directly address the Door Control Module for the 2017-2019 Karma Revero.
However, several related recalls and service campaigns highlight the complexity of the Revero's systems:
- NHTSA Recall 19V-408: Addressed a structural issue with the upper intrusion bracket in the front left door of some 2018 Revero models, which could affect side impact performance. This did not involve the electronics.
- NHTSA Recall 19V-296: On certain 2018 Revero vehicles, the rollover sensor for the side-curtain airbags was not enabled. The fix required replacing the Airbag Control Unit and updating software.
- Service Campaigns SC-18-90-01 & CC-23-00-01: These documents detail procedures for updating vehicle software to new "Baselines" to improve performance and fix bugs across various control modules, demonstrating the importance of software maintenance.
Buying a Used Door Control Module
Given the high cost and potential scarcity of new OEM parts for a low-volume vehicle like the Revero, a used OEM module is often the most practical and cost-effective solution. Aftermarket options are generally not available. Here’s what to look for:
- Match Part Numbers Exactly: This is the most critical step. There are different modules for different doors (e.g., front left vs. right). The part number must be an exact match to your original module. Known part numbers include C131194400100 (Front Left) and C131194400200. Do not attempt to install a module with a different part number.
- Inspect for Water Damage: Door modules are susceptible to moisture from leaking window seals or damaged door vapor barriers. Look for any signs of corrosion, water stains, or a white, chalky residue on the casing or electrical pins. Do not buy a module with any signs of water intrusion.
- Source from a Reputable Recycler: Purchase from an established auto recycler that offers a warranty and a clear return policy. This protects you in case the part is defective.
- Factor in Programming Costs: Remember that the cost of the part is not the final cost. You MUST budget for professional programming by a Karma-authorized facility or a specialist with the correct tools.
| Part Type | Estimated Cost |
|---|---|
| New OEM | $400 - $700+ (dealer-only part, price unconfirmed) |
| New Aftermarket | Not Available |
| Used OEM | $150 - $300 |
| Shop Labor (Installation & Programming) | $250 - $500+ (Requires specialist) |
Frequently Asked Questions (FAQ)
Does a used Karma Revero Door Control Module need to be programmed?
Yes, absolutely. Any replacement module, whether new or used, must be professionally programmed to the vehicle's VIN using Karma-specific diagnostic tools. It will not work otherwise.
Can I replace the door module myself?
While the physical replacement (removing the door panel and swapping the module) is possible for an experienced DIY mechanic, it is not recommended. The mandatory software programming that must be done after installation requires dealer-level tools and access, making a trip to a specialist unavoidable.
My window and locks aren't working. Is it definitely the module?
Not necessarily. The most common cause for a complete loss of power to door components is broken wires in the flexible harness between the door and the body. Always have this wiring checked before replacing the module. Software glitches can also cause temporary issues.
Can an independent mechanic program a Karma Revero module?
Only if they are a specialist in high-end EVs and have invested in Karma-specific diagnostic tools like the KarmaSync interface and have a relationship with Karma's technical support. A standard repair shop will not have the necessary equipment. You will likely need to visit a Karma-authorized service center.
Technical Specifications
OEM Part Numbers: C131194400100 C131194400200
Requires programming with KarmaSync tool and a stable 12.5V+ power supply during flash.
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.
- Karma Revero: