Custom ECU tuning files online — worldwide delivery, Switzerland-based support
ABG Performance
Services

Auto Electrical Repair

Modern vehicles run on a complex electrical system — wiring, sensors, control units and charging all have to work together. When something goes wrong, it can cause warning lights, poor running, no-starts or unreliable behavior.

ABG Performance diagnoses and repairs electrical faults, from wiring and sensors to battery, charging and ECU power. A healthy electrical system is also the foundation for safe, reliable tuning.

Not sure what's wrong? Contact us with your vehicle details and symptoms, and we'll guide you on the next step.

electrical_system.scan
> testing wiring, charging & ECU power … complete · 0 active faults
Battery & charging14.2 VOK
Wiring & loomsno breaksOK
Sensors & actuatorsin rangeOK
ECU power & groundsstableOK
CAN buscommunicatingOK
Charging
1.82 bar
Codes
88 °C
What we repair

From wiring to control units

Electrical faults are often hidden and intermittent. We trace the problem to its source instead of replacing parts on guesswork.

Battery & Charging

Battery, alternator and charging-circuit faults that cause no-starts and warnings.

Wiring & Looms

Damaged, corroded or broken wiring and connectors traced and repaired.

Sensors & Actuators

Faulty sensors and actuators that disrupt running and trigger fault codes.

ECU Power & Comms

Power supply, grounds and CAN-bus communication issues to control units.

Lighting & Comfort

Lighting, windows, central locking and other comfort-electronics faults.

Fault-Code Diagnosis

Reading and interpreting stored codes to pinpoint the real cause.

How we work

Find the fault, fix it once

A methodical process that locates the real cause before any parts are changed.

  1. 01
    Scan & read codesWe read stored and live data to see what the vehicle is reporting.
  2. 02
    Locate the faultWiring, sensors, power and grounds are tested to trace the source.
  3. 03
    Repair properlyThe fault is fixed at the source — not masked by clearing a code.
  4. 04
    Verify & clearWe confirm the repair, clear codes and check the system is healthy.

A healthy electrical system is the foundation for safe tuning. If you're planning a remap, we recommend resolving any electrical or sensor faults first. See our vehicle diagnostics service for a full health check.

Get Started

Got a warning light or electrical fault?

Book a diagnosis and our team traces the problem to its source — so it's fixed once, properly.