Kia Optima driver's side rear window motor failure requiring dealership service on Kia Optima

Some Kia Optima owners report experiencing driver's side rear window motor failures, which may necessitate dealership service due to window regulator issues. These problems include windows that fall down or fail to roll up properly, particularly in the 2016 model. Repairs can be costly, with estimates around $250 for the regulator and at least $150 for the motor. Additionally, some owners find that dealerships may need to retain their vehicles for extended periods to address multiple motor failures and wait for parts. Investigations have also been conducted into potential defects in the window regulator drum gears, which could contribute to window closure issues. Furthermore, regular use of the rear window switch alongside the master switch can lead to motor and switch burnout, resulting in the need for multiple replacements. Owners facing these issues should be prepared for repair costs and consider the underlying causes to address the problems effectively.