Porsche 928 S4 LH Jetronic ECU DME
Bosch 0 280 002 504 - Repair

ECU Fits Years: 1987 - 1990

Warranty: 5 Years

Product Code:

Availability:In stock

$799.00 799.00



You are purchasing a repair service; we will need you to send your DME to our office to properly inspect, diagnose and repair your defective DME. We perform bench and vehicle tests for the ultimate in diagnostic reliability, ensuring that you receive a Plug and play product, Guaranteed!

Your DME will be inspected and tested, then we will report to you to obtain your approval for the repair, if needed, a report from our technician will be included about the diagnosis and the solution provided for your DME.

The Porsche 928 S4 Bosch DME was designed and made in the 1980s, at the time it was cutting edge technology. Over time, the DME and its components began to develop problems, making it unreliable in its operation. Our reconstruction services cover the repair and preventive maintenance required for the DME to operate at 100% optimal performance.

We have engine bench simulators and dedicated physical tester cars to ensure diagnosis and repairs, also to help with advice on fixing problems with your engine electronics.

"It's important to note that every repair performed to your Porsche 928 S4 DME will have included a brand new / improved Hybrid replacement circuit".

NOTE: Repair Form must be filled out BEFORE you ship the ECU.

If you think that your ECU is causing problems in your car, send us your Door window ECU through our Repair Service Program and we will diagnose your ECU to confirm whether your ECU is good or bad. If, however, your ECU is in good condition, testing is only $149.

Our 4 Stage Process for Testing Before We Repair Anything:

  1. We start with a complete visual inspection.
  2. We then check the software and programming.
  3. We perform a bench test.
  4. Lastly, we do dynamic test in the same model car.

ECU DME Bad Common Symptoms:

  • Car will not start.
  • No Fuel pump activation.
  • Overly rich mixture.
  • Flooding of cylinder due to injector activation with ignition OFF.
  • Lack of Engine Power / Poor performance.


Repairs take between 5 days once we receive the unit at our offices.


ECU location
ECU EZK location

Note: The ECU LH control unit is located on the Right side of the fuse box.

ECU Part#: 0 280 002 504 - 0280002504 - - 928 618 123 10 - 92861812310 - 928.618.123.10.


ECU location



Porsche 928 S4 LH Jetronic ECU DME
Bosch 0 280 002 504 - Repair