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How to Fix a Faulty Mercedes ECU Mercedes ECM

If you’ve been following our blog, you know we spend a lot of time working with Mercedes ECU’s, Mercedes ECM’s, or engine control units or module. The Mercedes ECU or Mercedes ECM is a major component of your vehicle. It’s the onboard computer and it’s responsible for regulating your car’s engine. We often modify a Mercedes ECU/Mercedes ECM to help its engine run better, unlocking extra horsepower and torque (here’s one example of a recent C63s tune). However, we can also help if you’re having issues with a broken or Faulty Mercedes ECU / Mercedes ECM. We know the Mercedes ECU inside and out after spending years analyzing and repairing them. We can even provide a Virgin Mercedes ECU.

Common Signs of a Faulty Mercedes ECU Mercedes ECM

If you’re scratching your head because your vehicle is experiencing one of these common signs, you may have an issue with your ECU:

  • The Check Engine Light is on
  • Car won’t start and other common electrical components, like the battery and the starter, aren’t the problem
  • Unexplained poor performance or drops in fuel economy
  • Sudden jerking or stopping while shifting gears, even though you maintain your transmission properly
  • Fan running on High
  • Unexplained error codes when all components have been tested or replaced
Options for Mercedes ECU Repair or Replacement

It is important to properly diagnose a faulty ECU with computer diagnostic equipment. We offer a free diagnostic service at the PRESSERtech garage, and you don’t even have to be within driving distance to take advantage. We’ll ask you to ship us your ECU, and within 24 hours of receipt we’ll let you know if you need a repair and how much it will cost. We can fix it for you, or we can simply ship it back to you within 24 hours of your request. You’ll just pay for the shipping and handling for your ECU.

If you’ve already been to a dealership or another repair shop, you may have been told your ECU is broken or unreadable. Getting a new ECU at a dealership can be very expensive. Luckily, we can help and save you money. The dealership is not your only option for a new ECU. Even when other companies can’t communicate with the ECU, we can because we know what we’re doing.

Virgin Mercedes ECU’s 

In most cases, we can remove the Driver Authorization System (DAS) and place it on a replacement ECU. If that is not possible, we can provide a virgin ECU just like a mechanic would order from Mercedes Benz. All the virgin ECU needs is a simple activation process using Mercedes Star/Xentry software. Ultimately, we can help you save hundreds, if not thousands of dollars that you would spend at a dealership.

We’ve Shipped ECU’s Across the Globe

We have provided virgin Mercedes ECU’s as well as fully programmed Mercedes ECU’s to individuals and shops all over the country, and shipped to more than 40 countries worldwide, from New Zealand, Sweden, Zambia to the Phillipines.. Even if you’re not local to the PRESSERtech garage, we can work with you and get your virgin ECU shipped to you, ready for your mechanic to install in your vehicle.

Give Us A Call

If you’re looking to repair or replace a faulty ECU, and would like to learn more about how we can help save you some money, give us a call at (770) 648-0500 or use our Contact Form. We look forward to speaking with you!