BMW MSD80 MSD81 SIEMENS DME/ECU Misfire Repair Service ECU Repair Service Automotive Circuit Solutions
BMW MSD80 MSD81 SIEMENS DME/ECU Misfire Repair Service ECU Repair Service Automotive Circuit Solutions

BMW MSD80 SIEMENS DME/ECU Misfire Repair Service

Regular price $299.99 Sale price$149.99 Save $150.00

Watch the video below to see how to send us your unit!



This Service Fixes the Following Problems

Do you own a BMW with a 6 cylinder turbo engine that is having random cylinder misfires? You most likely have a failing DME (ECU/ECM). We are here to help!

This repair service affects the N54 or N54T 6 cylinder turbo engines commonly used in many 2006-2013 BMW vehicles.  This will not alter your VIN in the DME and will be "plug-n-play". No programming required.

Please note that failing injectors are the #1 cause of DME failure. Along with getting the DME rebuilt you will also need to replace and program all of your injectors or else the DME will fail again.

This service includes replacement of all 6 Injector drivers.

Trouble Codes you may have that indicate this issue:

  • 30BA - DME Digital Motor Electronics, Internal Failure
  • 30BB - DME Digital Motor Electronics, Internal Failure
  • 29D0 - Cylinder 4 Misfire
  • 29D1 - Cylinder 5 Misfire
  • 29D2 - Cylinder 6 Misfire
  • 29CD - Cylinder 1 Misfire
  • 29CE - Cylinder 2 Misfire
  • 29CF - Cylinder 3 Misfire
  • 29CC - Misfire Multiple Cylinders


  • 2007-2013 BMW 135i (E82)
  • 2007-2008 BMW 335i (E90)
  • 2007-2008 BMW 335xi (E91)
  • 2007-2010 BMW 335i (E92)
  • 2007-2010 BMW 335i (E93)
  • 2009-2010 BMW 535i & 535xi (E60)
  • 2009-2016 BMW Z4 35i (E89)
If you have already attempted to fix the DME, additional charges may apply depending on the damage.  


Terms and Conditions:

  1. This sale is for a repair service, not a part. We do not have any for sale. 
  2. You are responsible to package your part in such a way that it will not be damaged. We will return it in same packaging. If we receive it damaged we will always send you a picture.
  3. Very rarely, we may encounter an issue that we are unable to repair. In this case, we can send it back to you or you will have the option to donate it to us for parts.
  4. If there is a problem with your cluster once you receive it back, Contact us. We will work hard to resolve any problem.

Warranty Info:

  1. This service will have a one year warranty
  2. Shipping will be covered both ways for the first 3 months after receiving your cluster. after that you will have to pay shipping to us.
  3. Warranty is not transferable if you sell the car. We log all customer data and give out a warranty # for tracking. 

Step 1

After purchase, carefully remove the unit from your vehicle. 
At this time please take pictures of your unit for your records. (This is to help in the case it gets damaged or scratched up)

Step 2

Securely pack your unit, using a suitable box so that your unit will not get damaged during shipment.  Include the following Information:
  • Your Name
  • Return Address
  • Contact Phone Number
  • Description of Issues with your unit
  • Vehicle Year, Make, and Model
  • LED COLOR (if you are purchasing a service that includes LEDs)

Step 3

(At Your Expense) Send Your Unit To:

Automotive Circuit Solutions
10 Honeysuckle Rd
Marshfield, MO 65706

Step 4.

When we receive the unit. We will inspect, repair and send it back within 24 hours of receiving it.

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Customer Reviews

Based on 5 reviews
Brandie Rodriguez

Thanks for helping me meet a shop deadline on my '08 BMW N54. I had an ECU issue and noone would help me.

davis rosenquist
Car runs great


Jaime Mendoza
Amazing service and very fast

I had burned my mosfets and I was untrusting of where to ship it but I gave ACS a shot and they didn’t let me down! Good job guys!

Excellent service!

Performed Fuel Injector MOSFET replacement service. Vehicle ran smoother than it ever has. Thanks for the excellent service!

Fixed my 335i

I didn’t want to ship out my ECU for repairs but I’m glad I did. I was running on only 3 cylinders and getting many codes thrown at me, such as: mixture control and 30BA. I am still on stock index 1 injectors but it’s low mileage. This literally fixed my car and it runs clean. 100% worth it

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