INFINITI M35 no reverse issue after prolonged driving despite transmission fluid flush on INFINITI M35

Some Infiniti M35 owners report experiencing issues with their vehicle not going into reverse after prolonged driving, despite having the transmission fluid flushed. This problem may indicate underlying transmission issues, such as internal reverse clutch failure. Common symptoms associated with these transmission problems include delayed or rough shifting, transmission slipping, unusual noises, leaking transmission fluid, difficulty engaging gears, and dashboard warning lights like the "Check Engine" light. Owners have noted that red or brown fluid leaks can signal potential transmission issues, emphasizing the importance of maintaining proper fluid levels and quality. Neglecting contaminated transmission fluid can lead to further damage, making prompt changes essential. Repair costs for transmission issues can vary, with DIY fluid changes costing between $50 and $100, while professional repairs may incur higher expenses. It is advisable for owners to seek professional assistance to diagnose and resolve these issues promptly to prevent further damage and ensure optimal vehicle performance.