Mercedes ME (ME9.7) ECU Reset & Unlocking Service (Virginizing)

Expert Mercedes ECU Reset & Unlocking Service

Because Mercedes-Benz engine computers are strictly electronically locked to the vehicle’s Drive Authorization System (DAS) and Immobilizer, you cannot simply buy a used ECU from a junkyard and install it in another car. If you have purchased a used donor ECU and have the capability to program it yourself using professional diagnostic equipment, our mercedes ecu reset service is the perfect, highly cost-effective solution to avoid buying a brand-new module.

What is ECU Virginizing / Unlocking?

Our specialized unlocking service wipes the previous vehicle’s VIN, immobilizer data, and security keys from the used module’s memory. We electronically reset the engine computer back to its “virgin” factory state—exactly as if you had just purchased a brand-new, unprogrammed unit directly from the Mercedes-Benz parts counter.

Once you receive the unlocked module back from us, you or your mechanic can easily personalize, code, and adapt it to your specific vehicle using factory-level diagnostic tools such as Star Diagnosis (SDS), Xentry, or Autologic.

(CRITICAL NOTE: An unlocked/virginized ECU is not plug-and-play. It will not start your car immediately. If you do not have the specialized equipment required to program an unlocked ECU to your car’s immobilizer, we highly recommend our 1:1 ECU Cloning Service instead, which is completely plug-and-play).

Supported Mercedes-Benz Chassis

This ecu reset mercedes service supports Bosch ME engine computers found in a vast array of Mercedes vehicles equipped with the M272 (V6) and M273 (V8) engines, including:

• C-Class & CLK: W203, W204, CL204, C209
• E-Class & CLS: W211, W212, C207, W219
• S-Class & CL: W221, C216
• SUVs: W164 (ML), X164 (GL), X204 (GLK), W463 (G-Class)
• Coupes & Roadsters: R129, R230 (SL), R171 (SLK), C197 (SLS AMG)
• Vans & Wagons: W251 (R-Class), W906 (Sprinter)

Supported Models & Part Numbers

Models: C230, C280, C300, C350, CL500, CLC230, CLC250, CLC350, CLK280, CLK350, CLK500, CLS280, CLS300, CLS350, CLS500, E280, E350, E500, G500, GL450, GL500, GLK280, GLK300, GLK350, ML350, ML500, ML63 AMG, R280, R300, R350, R500, S300, S350, S400, S450, S500, SL280, SL300, SL350, SL500, SLK280, SLK300, SLK350, SLS AMG.

Common ME9.7 Part Numbers Include: A2721532491, 0261209204, A2721533291, 0261209220, A2731534879, 0261209206, A2731534979, 0261209207, A2721535691, A2721535391, 0261209381, A2731535079, 0261209374. (If your specific number is not listed, contact us—we still cover it!)

Important Shipping Instructions & Terms

To utilize this mercedes ecu repair and reset service, securely package and mail us the used donor ECU only. We do not need your original ECU or car keys to perform a factory reset. After receiving the unlocked module, you will need a dedicated OBD2 diagnostic scanner with Mercedes programming and SCN coding capabilities to adapt the unit to your vehicle’s immobilizer.