Is Your Chrysler 300, Charger, or Magnum Acting Up?
If you’re dealing with frustrating and unpredictable engine problems in your 2008-2010 Chrysler 300, Charger, or Magnum, a failing Engine Control Module (ECM) is often the hidden culprit. This critical component is the brain of your vehicle’s engine, managing everything from fuel mixture and ignition timing to transmission shifting and emissions. When it starts to fail, it can cause a cascade of issues that are difficult to diagnose, leading to costly and unnecessary repairs. Symptoms can range from a simple check engine light to a car that won’t start at all, leaving you stranded and stressed.
We had a 2009 Dodge Charger come into the shop that was driving the owner crazy. It would randomly stall at traffic lights and had a persistent P0601 internal controller error code. The owner had already replaced the crankshaft sensor and a set of spark plugs with no luck. After connecting our diagnostic scanner, we noticed intermittent communication drops with the engine module. We knew right away this wasn’t a sensor issue. We installed one of our pre-programmed ECMs, and the car fired up instantly and idled perfectly. The communication was stable, the code was gone, and the customer was back on the road in under an hour, saving him from another round of guesswork.
Common Symptoms of a Failing ECM
A faulty engine computer can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your ECM needs to be replaced:
- ✔ Check Engine Light is on with communication-related fault codes (e.g., U-codes, P0600-P0606).
- ✔ Engine stalls, stumbles, or misfires intermittently.
- ✔ Poor fuel economy and noticeable loss of power.
- ✔ The vehicle cranks but refuses to start.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Seeming failure of multiple unrelated sensors at the same time.
- ✔ Cooling fans not turning on, leading to overheating.
The Plug-and-Play Solution: Your 2008-2010 Chrysler 300 ECM
Don’t let a bad module keep you off the road. This replacement 2008-2010 Chrysler 300 ECM is the definitive solution to restore your vehicle’s performance and reliability. The biggest challenge with replacing an ECM has always been the expensive and time-consuming programming required at a dealership. We eliminate that step entirely. We flash this module with the latest software updates and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN) and mileage. When it arrives at your door, it’s ready for a true plug-and-play installation. No dealer visits, no special tools, no extra programming fees.
Installation is Simple
Located in the left-hand (driver’s side) front of the engine compartment, replacing the ECM is a straightforward job for a DIY mechanic or a professional technician. Just follow these basic steps:
- Disconnect the Battery: Always disconnect the negative battery terminal before working on any electronic components.
- Locate the ECM: Find the module in the front driver’s side of the engine bay.
- Unplug the Connectors: Carefully release the locking tabs and unplug the wiring harnesses.
- Swap the Modules: Unbolt the old ECM and install the new one in its place.
- Reconnect Everything: Plug the wiring harnesses back into the new module and reconnect the negative battery terminal.
- Start the Vehicle: Your car will now start and run with its new, perfectly programmed brain.
Guaranteed Fitment and Compatibility
This engine computer is a direct replacement for a wide range of Chrysler, Dodge, and Magnum vehicles. It is compatible with multiple original part numbers, ensuring you get the correct component for your car. Please verify that your vehicle and original part number are listed below.
This part will fit these makes and models with these options:
- CHRYSLER 300 (2008-2010): 2.7L or 3.5L Engine, RWD (4-speed transmission)
- DODGE CHARGER (2008-2010): 2.7L or 3.5L Engine, RWD (4-speed transmission)
- DODGE CHALLENGER (2009): 3.5L Engine
- DODGE MAGNUM (2008): 2.7L or 3.5L Engine, RWD (4-speed transmission)
Replaces Part Numbers: 05150246, 05187021, 05187020, 05187014, 05187013, 05187012, 05187011, 05187010, 68054121, 68054120, 68054114, 68054113, 68054112, 68054111, 68054110, 68026433, 68026432, 68026431, 68026430, 68026424, 68026422, 68026420, and more. This unit is a direct replacement for part number 5150246AD.
Frequently Asked Questions
Does this ECM really come programmed?
Yes, absolutely. We require your vehicle’s VIN during checkout to program the module with your car’s specific software and security information. When it arrives, it is fully programmed and ready for installation with no additional steps required.
What if my original part number is slightly different?
That is very common. Manufacturers use many different part numbers for the same component over the years. As long as your vehicle’s year, make, model, and engine match the fitment list, and your old part number is on our cross-reference list, this module will work perfectly for you.
Will I need to perform a security relearn procedure?
No. Because we program the module to your VIN, the security information is already loaded. This allows for a simple plug-and-play installation without the need for any complex security or key relearn procedures.
Where is the ECM located on my vehicle?
On the 2008-2010 Chrysler 300, Dodge Charger, and Magnum, the Electronic Control Module is located in the engine compartment on the driver’s side (LH side), near the front.
What is the main cause of ECM failure?
ECM failure can be caused by several factors, including voltage overloads from jump-starts or bad alternators, excessive heat and vibration over time, and internal component degradation. Water intrusion is also a common cause of failure.