Where is the ECU computer Located on a 1998 Volvo S90?

The ECU (Engine Control Unit) on a 1998 Volvo S90 is typically located under the dashboard on the driver's side, near the steering column. It may be necessary to remove some panels or trim to access it. Additionally, the ECU is often mounted on or near the firewall, making it somewhat challenging to reach without proper tools. Always consult a repair manual for specific instructions and safety precautions.