Mercedes-Benz M273 V8 ME9.7 ECU ECM Replacement – New Module, Programming Included
Mercedes-Benz M273 V8 ME9.7 ECU ECM Replacement – New Module, Programming Included
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Mercedes-Benz M273 4.7L / 5.5L V8 ME9.7 ECU ECM Replacement – New Module, Programming Included
NEW aftermarket replacement Engine Control Module (ECU/ECM/PCM) for Mercedes-Benz vehicles equipped with the M273 V8 engine. Programming is included.
This is a brand-new aftermarket replacement ECU, professionally programmed to your vehicle using the data from your original engine computer. We transfer the necessary vehicle-specific information, including VIN, immobilizer data, coding, and calibration information, so the replacement arrives ready for installation.
Unlike a used junkyard ECU, you are receiving a new replacement module rather than another used computer with unknown history.
What You Receive
- Brand-new aftermarket ME9.7 engine computer
- Programming included
- Original ECU data transferred to the replacement
- VIN and immobilizer data programmed
- Vehicle-specific coding and calibrations transferred when applicable
- Bench tested before shipment
- Plug-and-play installation
- Your original ECU is required as the core and is retained by us
Compatible Engine
Mercedes-Benz M273 V8
The M273 was offered primarily in 4.7L and 5.5L V8 configurations.
Common applications include:
- S450
- S500
- S550
- E500
- E550
- CLS500
- CLS550
- CLK500
- CLK550
- CL500
- CL550
- ML500
- ML550
- GL450
- GL500
- GL550
- R500
- R550
- SL500
- SL550
Applications vary by year, chassis, engine version, software, and ECU part number. Always verify your original ECU part number before ordering.
Common Compatible Part Numbers
This replacement is available for many Mercedes-Benz M273 ME9.7 applications, including various ECU part numbers beginning with:
- A273153****
- 273153****
- Bosch ME9.7 part numbers
- and other compatible M273 engine computer part numbers
Part number compatibility is critical. The M273 was used across multiple Mercedes-Benz models and configurations, and not every M273 ECU is interchangeable. The replacement must be compatible with your specific vehicle and original ECU.
Not sure if yours is compatible? Send us a photo of the label on your original ECU or provide your VIN and we will verify compatibility before you order.
Plug-and-Play Installation
Once programmed, the replacement ECU is designed to be installed directly into the vehicle.
No dealer programming should be required after installation.
Installation is straightforward:
- Remove your original engine computer.
- Send the original ECU to us as the required core.
- We program the new replacement ECU using your vehicle's original data.
- We ship the programmed replacement ECU back to you.
- Install the replacement in the vehicle and start driving.
Professional installation is recommended.
Why Replace the ECU?
A failing M273 engine computer can cause a variety of drivability and communication problems, including:
- No-start or crank/no-start
- Intermittent stalling
- Engine misfires
- Check Engine Light
- Communication problems with the ECU
- Limp mode
- Various internal ECU fault codes
- Loss of control over engine functions
Important: These symptoms can have many causes. Programming a replacement ECU will not correct a vehicle problem caused by wiring, power supply, sensors, actuators, or another control module. Proper diagnosis should be performed before replacing the ECU.
How the Core Process Works
The price includes programming, but your original ECU must be sent to us.
After purchasing:
- Remove your original ECU from the vehicle.
- Package it securely and ship it to us.
- We extract the required vehicle-specific data from your original module.
- We program the new aftermarket ME9.7 ECU.
- We test the programmed replacement.
- We ship the programmed replacement ECU back to you.
We keep the original ECU as the core. It is not returned with the replacement.
Important Core Requirement
Your original ECU is required for programming.
If the original ECU is completely non-communicative or has severe internal damage, we may still be able to program the replacement, but additional charges may apply depending on what data can be recovered.
If your original ECU has been previously modified, damaged, or replaced with an incorrect unit, please contact us before ordering.
Warranty
6-Month Limited Warranty
The replacement ECU is covered against defects in the replacement module and our programming workmanship for 6 months.
Warranty does not cover failures caused by vehicle wiring problems, incorrect installation, water damage, electrical shorts, over-voltage, or other external causes.
Before Ordering
Please verify the part number on your original ECU before purchasing.
For the fastest fitment confirmation, send us:
- Vehicle year
- Model
- VIN
- Photo of the ECU label
- Original ECU part number
We will confirm compatibility before you send your core.
New replacement ECU + programming included + your original data transferred + plug-and-play installation.
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General FAQ
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What is immo off or immobilizer delete, and will it work for my VW or Audi?
Immobilizer delete (immo off) bypasses the immobilizer in the engine control unit (ECU) of VW and Audi vehicles. It’s used when the vehicle starts but immediately shuts down due to a fault in the immobilizer system, often with fault codes P1570 or P0513. Immo off services will not work if the vehicle does not start at all; it must start and then be shut down due to the immobilizer.
What is module cloning, and do part numbers need to match?
Module cloning involves copying all the data from one module to another, allowing the replacement to function just like the original. While it's generally recommended to match part numbers for compatibility, the necessity can vary by module. Some require exact matches, while others are more flexible and allow cloning between different part numbers. Each product listing on our website specifies the part number requirements. If you're unsure, feel free to reach out for guidance.
Do you have to open the module cases?
We only open module cases when absolutely necessary. For services that don’t require opening, we won’t open the module. However, depending on how badly damaged your original ECU is, sometimes opening the module is the only way to retrieve data. Additionally, some services don’t have a plug-in method at all and require direct access to the board, including soldering or chip replacement. The need to open modules is not specific to us but is sometimes essential depending on the condition of the ECU.
What are the shipping procedures and turn around times?
After purchasing, you will receive an email with shipping instructions. You are responsible for shipping your modules to us, and we will cover the return shipping. You can use any shipping service that is convenient for you. We typically use UPS Ground (3-5 days) for return shipping, but in some cases, we may use USPS or FedEx. Once we receive your package (shipping times depend on how quickly you ship it and the service used), we typically ship it back the next business day. Some services may require a 2-day handling time, depending on the complexity.
For detailed shipping times to and from your location, check out our shipping speed map.
What is the warranty?
We offer a 90-day warranty on programming only. This covers the accuracy of the programming performed, but does not extend to the module hardware itself.
Mercedes-Benz M273 V8 ME9.7 ECU ECM Replacement – New Module, Programming Included
