Baleno ECU Failure Symptoms & Trusted Repair Options

Had the same symptoms on my 2018 Suzuki Swift. The engine control system was showing intermittent faults and the car struggled with power delivery, especially during cold starts. After running car diagnostics, the issue was traced to a faulty main relay. This component is critical for proper ECU function and electrical system operation. The symptoms matched perfectly, unusual system reset events, engine cutting out, and trouble codes pointing to power supply issues. The main relay failure is actually a serious problem since it affects the entire engine management. When it starts failing, it can cause the ECU to lose power out of nowhere, leading to unsafe driving conditions. The repair itself is straightforward once correctly diagnosed, but driving with a failing main relay risks damaging other electronic components. The fix required replacing the main relay and performing a full system reset to clear adaptive memory. Most competent shops with proper diagnostic equipment can handle this repair. Look for technicians specifically experienced with ECU repair and electrical diagnostics rather than general mechanics. Important to note, always get a proper diagnosis first. Similar symptoms could indicate other issues like crankshaft sensors or fuel pump relays.

Thanks for sharing your experience. Your description matches my symptoms exactly, my Baleno had the same power delivery issues and unusual system resets. Good to know the main relay was the culprit affecting the engine performance. Just wondering, what did the complete ECU repair and system reset end up costing you? Also, have you experienced any similar control system problems since getting it fixed? My car diagnostics appointment is scheduled for next week and it would help to have a rough cost estimate to avoid overpaying.

Since getting the main relay replaced, my Baleno has been running perfectly with no engine control issues. The ECU repair was straightforward once the faulty relay was identified as the root cause. Total cost came to 120€ which included the diagnostic work, parts, and complete system reset to restore proper engine performance. The car diagnostics confirmed it was just the main relay causing the ECU problems, no other components were affected. After 6 months, the engine control system is working flawlessly with no unusual resets or power delivery issues. Getting it fixed by a qualified technician who understood ECU repair was definitely worth it to prevent more expensive damage. Your quoted repair cost should be similar since it sounds like the exact same issue. Just make sure they do a full system diagnostic to verify the main relay is the only problem affecting the ECU function.

Thanks for the advice. Finally got my Baleno checked and fixed last week. The mechanic I found specializes in vehicle electronics and confirmed the main relay was causing the ECU problems. The car diagnostics process was thorough, they tested all engine control components before replacing the faulty relay. Total repair cost was 135€ including parts and labor. A bit more than expected but worth every cent since the engine performance is back to normal. After the system reset and relay replacement, my Baleno runs perfectly with no more power issues or error codes. The unusual shutdowns are gone and acceleration is smooth again. Glad I found a shop that properly understood ECU diagnostics instead of just guessing at the problem. Really appreciate the help in identifying the likely cause. Having your experiences to reference helped me choose a qualified technician and avoid getting overcharged for unnecessary repairs.