AVS provides BMW diagnostics in Hertford for warning lights, electrical faults, poor running, performance issues and unusual vehicle behaviour. Modern BMW vehicles rely on connected systems, sensors and control units, so proper diagnosis is important before repair work begins. Our team uses diagnostic equipment and practical inspection methods to help identify the cause of the issue. We can check engine faults, emissions concerns, battery problems, sensor errors, braking system warnings and other dashboard alerts. Once the fault is reviewed, we explain the findings and advise on the next step. If your BMW is showing a warning light, contact AVS and arrange a diagnostic check today with our team from our local garage team today.