A Ram Owner's Guide to the 2011-2018 Ram 2500 Transfer Case Motor
If your Ram 2500 is struggling to switch into 4WD or the 'Service 4WD' light is on, this guide is for you.
- The 'Service 4WD' light is the most common sign of a failing transfer case motor.
- For 2016-2018 models, check if TSB 08-094-20 (a software update) applies before replacing parts.
- Replacement is a DIY-friendly job that can be done in under two hours with basic hand tools.
- Always check the electrical connector for corrosion before assuming the motor has failed.
Is Your Ram 2500 Stuck in 2WD or 4WD?
A failing transfer case motor is a common issue on Ram 2500 trucks as they age. The most frequent sign of trouble is the 'Service 4WD' light appearing on your dashboard. This usually means the truck's computer has detected a problem with the motor or its ability to shift. You might also find that the truck won't switch between drive modes, or you may hear grinding and clicking noises from underneath when you try to shift. These problems are often caused by wear and tear on the motor's internal plastic gears, or by moisture getting past the seals and causing corrosion.
Check for TSB 08-094-20 First
For 2016-2018 models, Ram issued a Technical Service Bulletin (TSB) for a software update. This update for the Drivetrain Control Module can fix issues like the 'Service 4WD' light, noisy shifting, and specific trouble codes like C140E (Transfer Case Motor Blocked). Before replacing the motor, check with a dealer to see if this software update has been performed on your truck, as it might solve the problem without needing new parts.
Choosing the Right Aftermarket Transfer Case Motor
When replacing the transfer case motor, you don't have to buy an expensive OEM part. Aftermarket options offer a good balance of quality and value. They are typically all-new parts, not remanufactured, and come with weather-tight seals to prevent corrosion. Here’s a look at the available brands:
- Standard Ignition (Standard Motor Products): Often considered a premium aftermarket brand, Standard parts are known for their quality and reliability, making them a solid choice for a durable repair.
- Dorman: Dorman is one of the most well-known aftermarket brands and offers direct-fit replacement parts. They are a popular and widely available option, though owner experiences can be mixed. Some users report long-term success, while others see them as a budget-friendly, but potentially less durable, alternative to OEM.
- Replacement / Skyward / URO Parts: These brands typically fall into the economy or standard-grade category. They offer a cost-effective solution to get your 4WD system working again. While URO Parts is more commonly associated with European vehicles, their inclusion in this market provides another budget-friendly alternative.
Pro Tip: Check Your Connections
Sometimes the issue isn't the motor itself, but the wiring. Before you buy a new part, inspect the electrical connector on your current motor for any corrosion, dirt, or loose pins. Forum users have reported that cleaning the connector or repairing a single damaged wire can sometimes fix the problem and save you hundreds of dollars.
🎬 Watch: How to fix the Service 4WD light for cheapCost of Replacing a Ram 2500 Transfer Case Motor
The cost can vary depending on the brand you choose and local labor rates. Doing the job yourself is very feasible and can save you a significant amount on labor.
🎬 See this step-by-step transfer case shift motor replacement guide| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Motor | $107.26 - $402.80 |
| Shop Labor | $60 - $120 |
| Total (DIY) | $107.26 - $402.80 |
| Total (Installed at Shop) | $167.26 - $522.80 |
Frequently Asked Questions (FAQ)
Do I need to program a new transfer case motor?
Generally, no special programming is needed for a direct replacement motor. However, if you have a 2016-2018 model, it's a good idea to make sure your truck's computer has the latest software update (TSB 08-094-20) to prevent future problems.
Is it the motor or the transfer case itself that's bad?
The symptoms can be similar, but if the problem is purely electronic (like the 'Service 4WD' light is on but there are no grinding noises), the motor is the most likely culprit. If you hear loud grinding or the truck is having trouble moving, the problem could be internal to the transfer case. A scan tool can help identify the specific trouble codes to pinpoint the issue.
🎬 Watch: Diagnosing and repairing a Ram 2500 with no 4WDWhat are common mistakes when ordering this part?
The biggest mistake is not verifying your transfer case model. These Ram trucks can have different transfer cases (e.g., Borg-Warner 44-46, NVG273). The model number is usually on a tag on the transfer case itself. Always check this number to ensure you order a motor that fits correctly.
Are there any recalls for the transfer case motor?
There are no specific recalls for the transfer case motor itself on the 2011-2018 Ram 2500. There was a recall for a small number of 2019 Ram 1500s for an incorrectly assembled transfer case, but this does not apply to the 2500 models in this year range. Always check for recalls related to the broader drivetrain system using your vehicle's VIN on the NHTSA website.
Helpful Videos
Technical Specifications
OEM Part Numbers: 68089746AA 68089746AB 68089746AC 68402358AA
Fits various Borg-Warner transfer cases used in 2011-2018 Ram 2500, including models BW44-46 and NVG273. The part is an electric motor assembly with an integrated wiring harness and a weather-sealed connector.
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.
- Ram 2500: