ECU Unlocks

In 1996 Mercedes began locking ECUs to the car that they were programmed to. As some of these cars get older, it's becoming difficult to justify spending the money for a new or re-manufactured ECU. We are able to unlock the ECU and put it into a "ready-to-program" state, just as if it were a new unit. Once the unit is unlocked, you must have a factory tool to program and initialize the module.

Please remember that all Mercedes ECUs 2003+ require online programming. We have select 272 motor part numbers in stock we sell as USED parts with a 90-day warranty for $600.

At this time we are able to unlock the following units:

  • HFM (104/111) - $250
  • ME 1.0 (119/120) - $250
  • ME 2.0/2.1 (104/111/112/113/119) - $250
  • ME 2.7/2.8 (112/113/137) - $250
  • ME 9.7 (272/273) - $300
  • SIMM4 (271) - $300
  • SIMM266 (266) - $300
  • CDI (642/647/648) - $300

NOTE: Siemens manufactured ECUs with part numbers beginning with 111 cannot be unlocked at this time

Is it safe to go with an unlocked unit?
Generally speaking, yes. Most used units are coming out of wrecked vehicles and if they were stored properly will be perfectly functional. We would advise avoiding flood damaged vehicles as a source for parts as water corrosion may not be visible from the outside of the unit. Please keep in mind that while the cost is cheaper, the risk is higher with used parts. There is no way to guarantee the longevity of a used part. 

Do you provide the used unit?
We have select 272 motor part numbers in stock we sell as USED parts with a 90-day warranty for $600. Contact us with your vehicle's VIN and ECU part number, and we will be glad to see if we have it on the shelf. Units provided by the customer for unlocking do NOT include a warranty. 

Will you test the unit for me?
We will only do a basic check for water or electrical damage as well as check for communication with the module to verify that it has been unlocked. 

What's the warranty on an unlocked ECU?
Other than verify that the unit has been unlocked, we do not offer any warranty or guarantee on used units that have been provided by the customer.

How long does this service take?
We can typically perform this service within 1-2 business days of arrival. Including a note with your contact information and what service you need done will help expedite this process.