This service provides expert cloning for Siemens/Continental SIM271DE20 and SIM271KE20 ECUs found in select Mercedes-Benz vehicles equipped with the M271 1.8L turbocharged inline-four engine. We transfer all data from your original ECU to a replacement unit, ensuring full compatibility with your vehicle’s engine and immobilizer systems. This avoids the need for complex programming or dealership coding.

What We Do

• Clone all vehicle-specific ECU data, including:

  • VIN

  • Immobilizer/anti-theft data

  • Configuration and coding specific to your vehicle

• Deliver a plug-and-play replacement ECU, ready for immediate installation.

Supported Vehicles (U.S. Market)

• Mercedes-Benz C-Class (W204) – C250 (2012–2014)

• Mercedes-Benz SLK-Class (R172) – SLK250 (2012–2015)

How It Works

1. Ship both your original ECU and a replacement unit to us.

2. We clone all data from the original ECU to the replacement.

3. Both ECUs are returned, with the replacement ready for immediate installation.

Important Notes

• Both ECUs must be from the same ECU family (SIM271DE20 or SIM271KE20).

• Replacement ECU must match the original unit's part number.

• We recommend verifying the replacement ECU’s condition before shipping.

Texas-Based Service With Nationwide Mail-In Support

We are located in San Marcos, TX, serving customers throughout Austin, San Antonio, Houston, Dallas–Fort Worth, and across Central Texas. Nationwide mail-in service is available.

Shipping Instructions

Package both original and replacement ECUs securely in a padded box. Include a printed note with:

• First and last name

• Contact phone number

• Return shipping address

• Vehicle year, model, and VIN

Ship the package to:

ClusterFix Texas
16044 N Hwy 123
San Marcos, TX 78666

After shipping, send tracking information to info@clusterfixtexas.com or text (512) 792-1717.

What to Expect After Cloning

Once your replacement ECU is returned, it will be recognized by your Mercedes-Benz as the original unit. All engine and immobilizer functions will operate normally, with no additional programming required.

FAQ

• Do the original and replacement ECU part numbers need to match?
  Yes, identical part numbers are required for successful cloning.

• Will my Mercedes function normally after cloning?
  Yes, the cloned ECU restores all engine and immobilizer functions plug-and-play.

• Do you supply replacement ECUs?
  No, customers must provide a compatible replacement unit.

• Do you service customers outside Texas?
  Yes. Nationwide mail-in service is available.

• What if I’m unsure about compatibility?
  Contact us with your ECU part number before shipping for verification.