Automotive control unit repair, diagnostics, and software solutions

Repair control units instead of replacing them at great expense

Defective engine control units (ECUs), transmission control units, or comfort control units are a common cause of vehicle breakdowns and malfunctions. A new control unit from the manufacturer often costs several thousand euros—in most cases, professional repair is the significantly cheaper alternative.

Common problems with control units

Control units can be damaged by aging, temperature fluctuations, moisture, or mechanical stress. Common faults include:

  • Engine control unit (ECU) with misfires, misfires, or starting problems
  • Transmission control units with shift errors or emergency mode
  • ABS/ESP control units with sensor errors or communication problems
  • Comfort control units (e.g., window regulators, air conditioning) with electronic failures
  • Cold solder joints, defective components, or water damage
  • Software problems after modifications or repairs

Repair process

The defective control unit can either be sent by mail or dropped off at a partner workshop. After an initial inspection, a precise analysis is carried out. A decision is then made as to whether a repair, refurbishment of individual components, or software adjustment is necessary.
After successful testing, the control unit is returned or reinstalled in the workshop.

Collaboration with workshops

Since much of the work on vehicle electronics is subject to master craftsman certification, the service is primarily aimed at automotive workshops and service centers. Private customers can also send in defective control units – these are then processed in cooperation with certified automotive master workshops. This ensures that every repair is carried out correctly, both technically and legally.

Programming and teaching processes

In addition to repairs, programming and training processes are also possible in cooperation with partner workshops. These include, for example:

  • Programming control units for new vehicles
  • Install software updates
  • Adjustments after modifications or repairs
  • Restoration of original coding
  • Support in diagnosing complex error patterns

Advantages of repairing control units

  • Up to 70% cost savings compared to new parts
  • Preservation of original software and vehicle coding
  • Fast processing and short downtimes
  • Use of professional measurement technology and high-quality spare parts
  • Support with diagnosis and repair directly in the workshop

Software adaptations and special solutions

In addition to classic repairs, customized solutions are also possible:

  • Adjustment of control unit software following vehicle modifications
  • Custom programming in collaboration with specialist workshops
  • Diagnostic support for companies dealing with difficult faults
  • Special solutions for tuning or motorsport applications (in coordination with partner companies)

Contact us now

A defective control unit does not have to mean the end – repair is often the most economical solution. I offer fast and professional service for workshops and private customers in cooperation with certified master craftsmen.

Simply inquire:

  • Send the defective control unit by mail (GLS preferred).
  • Or drop it off directly at a partner workshop
  • Feedback on feasibility and costs within a few business days

Get in touch and have us check whether a repair is possible, with no obligation.

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Dominik Ewers Solutions
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