Is Your Chrysler 300M Running Rough?
If your 2003 Chrysler 300M, Concorde, or Intrepid is experiencing perplexing issues like stalling, erratic shifting, a persistent check engine light, or a complete no-start condition, the root cause is often a failing Engine Control Module (ECM). The ECM is the central brain of your vehicle’s engine management system, controlling everything from fuel injection and ignition timing to emissions systems and transmission function. When it begins to fail, it can create a cascade of problems that are frustrating and difficult to diagnose.
From the Diagnostic Bay
We had a 2003 Chrysler Concorde with the 3.5L engine towed in last month. The owner was at his wit’s end. The car would crank but wouldn’t start, and he had already replaced the battery, spark plugs, and even the fuel pump. After hooking up our diagnostic scanner, we found no communication with the engine module. We checked all the power and ground circuits to the ECM and found them to be perfect. This pointed directly to an internal failure of the module itself. We installed one of our pre-programmed units, and the car fired right up on the first try. It’s a classic case where the central component fails, making everything else seem broken.
Common Symptoms of a Failing ECM
- âś” Check Engine Light is illuminated with no clear cause.
- âś” Vehicle refuses to start or is very difficult to start.
- âś” Stalling or sputtering while driving, especially when warm.
- âś” Noticeable decrease in fuel economy.
- âś” Poor engine performance, hesitation, or misfires.
- âś” Automatic transmission shifting erratically or harshly.
- âś” Communication errors with diagnostic scan tools.
The Direct-Fit Solution: A Pre-Programmed 2003 300M Engine Computer
Don’t let a faulty module keep your car off the road. This replacement 2003 300M Engine Computer, part number 04896722AG, is the reliable and straightforward solution you need. We eliminate the biggest headache of ECM replacement: programming. Unlike a generic part from a local store or a salvage yard unit, this computer arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN) and mileage. This ensures that all vehicle-specific parameters, including anti-theft systems and optional features, function correctly from the moment of installation.
Plug & Play Installation
There is no need for expensive trips to the dealership for programming or flashing. Our process makes installation a simple mechanical swap. Just disconnect the battery, remove the old module, install the new one, and reconnect the battery. Your vehicle’s systems will recognize the new, correctly programmed module, and you’ll be ready to get back on the road. This is the most efficient way to restore your vehicle’s performance and reliability.
Guaranteed Compatibility
This engine computer is a direct replacement for a wide range of original part numbers, ensuring a perfect match for your vehicle. It is compatible with the following part numbers:
04896501AB, 04896501AC, 04896501AD, 04896501AE, 04896722AA, 04896722AB, 04896722AC, 04896722AD, 04896722AE, 04896722AF, 04896722AG, 05114082AA
This part is verified to fit the following vehicles with the specified options:
- 2003 Chrysler 300M: Electronic Control Module; (LH front engine compartment), exc. Special; ID 4896722
- 2003 Chrysler Concorde: Electronic Control Module; (LH front engine compartment), 3.5L, Limited (VIN G, 8th digit), ID 4896722
- 2003 Dodge Intrepid: Electronic Control Module; (LH front engine compartment), 3.5L, VIN G (8th digit), ID 4896722
Order your replacement 2003 300M Engine Computer today and restore the peak performance and dependability of your Chrysler or Dodge sedan.
Frequently Asked Questions
Is this part truly ‘Plug & Play’?
Yes. We program the module with your vehicle’s specific VIN and mileage before shipping. This means it will work immediately upon installation without any need for additional programming from a dealer or specialized mechanic.
How do I know for sure that my ECM is the problem?
While the symptoms listed above are strong indicators, a definitive diagnosis is best. This usually involves a professional mechanic checking for communication with the module and verifying that the power and ground circuits leading to the ECM are intact. If the module has power but is not communicating, it has likely failed internally.
Where is the ECM located on my 2003 300M?
The Electronic Control Module is located in the engine compartment on the driver’s side (LH side), typically near the front of the vehicle. It’s a silver metal box with several large electrical connectors.
What information do you need from me to program the computer?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) and the current mileage. You can typically find the VIN on your dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my check engine light?
If the check engine light is on due to an internal fault within the original ECM, then yes, this replacement module will resolve the issue and the light. However, if the light is on due to other failing sensors or components (like an oxygen sensor or catalytic converter), those issues will need to be addressed separately.
What is the difference between an ECM, ECU, and PCM?
The terms are often used interchangeably. ECM (Engine Control Module) and ECU (Engine Control Unit) refer to the same part. PCM (Powertrain Control Module) is a more integrated unit that controls both the engine and the transmission. For your vehicle, this part serves as the primary brain for the engine’s operations.