INFINITI M45 engine noise issue resembling a mouse, concerns raised during service on INFINITI M45

Some INFINITI M45 owners report experiencing engine noise issues that resemble a mouse, which may be attributed to several underlying causes. These noises can arise from low oil levels or pressure, ignition system problems, or exhaust leaks. Additionally, a failing drive belt idler pulley may produce a chirping sound from the front of the engine, while rattling noises could indicate loose or damaged components like heat shields or engine mounts. Whining or whirring sounds might suggest issues with the accessory drive belt, pulleys, or the power steering system. Owners are advised to have their engines thoroughly inspected by a qualified mechanic to accurately identify the source of the noise. If the noise persists after service, concerns may arise regarding sound quality, particularly if it occurs during acceleration or under specific conditions. Regular maintenance, including oil level checks and belt inspections, can help prevent and address these engine noise issues effectively.