Restore Peak Performance to Your 3.7L V6
Is your 2012 Dodge 1500 or Jeep Liberty suddenly exhibiting frustrating and unpredictable behavior? If you’re dealing with a persistent check engine light, rough idling, stalling, or a complete no-start condition, the root cause is often a failing Engine Control Module (ECM). This component is the brain of your vehicle’s engine, responsible for managing everything from fuel injection and ignition timing to emissions controls and transmission shifting. When it fails, it can create a cascade of problems that can be difficult to diagnose and expensive to fix at a dealership.
This replacement Engine Control Module, part number 68103707AD, is the definitive solution to get your truck back in reliable, working order. We take the guesswork and high cost out of the equation. Unlike a generic part from a local store, this module arrives at your doorstep fully programmed to your vehicle’s specific Vehicle Identification Number (VIN) and mileage. This means no costly trips to the dealer for programming, no special tools required, and no complex procedures. It’s a true Plug-and-Play solution designed for the everyday owner and professional mechanic alike.
From the Diagnostic Bay
We had a 2012 Dodge 1500 with the 3.7L V6 come into the shop with a very strange issue. The owner reported that it would randomly stall at traffic lights, but only after it had been running for at least 30 minutes. There were no consistent trouble codes, just a generic U0100 ‘Lost Communication’ code that would pop up occasionally. We checked the wiring, grounds, and power feeds to the ECM, and everything looked perfect. On a hunch, we monitored the 5-volt reference signal from the ECM to the sensors. After letting the truck idle for about 45 minutes, we saw the voltage start to fluctuate wildly before dropping to zero, causing the engine to stall. The internal voltage regulator in the original ECM was failing under heat soak. We installed one of our pre-programmed modules, and the truck has been running perfectly ever since. It’s a classic example of how a failing ECM can create ghost-like issues that are nearly impossible to trace without replacing the unit.
Is Your 2012 Dodge 1500 ECM Failing?
A faulty engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following symptoms, a failing ECM is a likely culprit:
- ✔ Check Engine Light: The light is on, and you may have codes related to sensor circuits (P0100-P0600 range) or communication errors.
- ✔ Engine Stalling or Misfiring: The engine may stall unexpectedly, run rough, or misfire on one or more cylinders.
- ✔ No-Start Condition: The engine cranks but refuses to start, often due to a lack of spark or fuel injector pulse.
- ✔ Poor Fuel Economy: A sudden and unexplained drop in MPG can be caused by the ECM failing to properly calculate the air-fuel mixture.
- ✔ Inconsistent Shifting: The ECM works with the transmission controller, and a fault can lead to harsh or erratic automatic transmission shifting.
- ✔ Communication Issues: A diagnostic scan tool may be unable to communicate with the engine computer.
- ✔ Apparent Sensor Failures: Multiple sensors failing simultaneously often points back to a problem with the ECM’s internal circuits, not the sensors themselves.
The Plug-and-Play Advantage
The biggest hurdle in replacing a modern engine computer is the security and programming. Your vehicle’s factory anti-theft system (SKIM/Sentry Key) is tied directly to the ECM. A non-programmed module will not allow the engine to start. Our professional programming service handles all of this for you before the part is even shipped. We flash the module with your truck’s VIN, which syncs it with the existing keys and other modules in your vehicle. The result is an installation process that is as simple as swapping a battery.
- Disconnect the Battery: Always start by disconnecting the negative battery terminal for safety.
- Locate and Remove the Old ECM: On the 2012 Dodge 1500, the ECM is typically located in the engine compartment on the driver’s side firewall.
- Install the New Module: Bolt the new, pre-programmed ECM in place and carefully reconnect the wiring harnesses.
- Reconnect the Battery: Reattach the negative battery terminal.
- Start Your Engine: The vehicle will start and run correctly, with no further programming needed.
Guaranteed Compatibility
This module is a direct replacement for a range of part numbers, ensuring a perfect fit and function for your vehicle. It is compatible with the following part numbers: 6810707AD, 05150631AB, 68103707, 68087057AA, 68154700AA, 68093208AC, 05094522, 05094521, 68065902, 68065901, 68103710, 68103708, 68103709 and more. It is specifically designed for the 2012 Dodge 1500 Pickup with the 3.7L engine and the 2012 Jeep Liberty with the 3.7L engine. Eliminate the diagnostic headaches and get the right part, programmed and ready to install. Order today and restore your truck’s reliability and performance.
Frequently Asked Questions
What information do you need to program this ECM?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the module correctly. Please provide your VIN during the checkout process to ensure a seamless, plug-and-play installation.
Is this part really ‘Plug and Play’?
Yes. ‘Plug and Play’ means the module arrives fully programmed to your vehicle’s VIN. You will not need to visit a dealership or mechanic for additional programming. Once installed, it will be synchronized with your truck’s anti-theft system and other components, allowing the vehicle to start and run properly.
Will I need to have my keys reprogrammed?
No. Our programming process syncs the replacement ECM to your existing keys. As long as your current keys start the vehicle (or did before the original ECM failed), they will work immediately with this new module.
How can I be sure my ECM is the actual problem?
While the symptoms listed are strong indicators, it’s always best to have a proper diagnosis performed. This includes checking for consistent power and ground at the ECM connector and ensuring the communication network (CAN bus) is intact. If multiple unrelated sensor codes appear at once, it’s a very strong sign the ECM is the culprit.
Where is the ECM located on my 2012 Dodge 1500?
On the 2012 Dodge 1500 with the 3.7L engine, the Engine Control Module is typically mounted in the engine compartment. Look on the driver’s side, attached to the firewall or inner fender well. It will be a metal box with several large electrical connectors.