Volvo S40 water accumulation in back seats causing starting issues on Volvo S40

Some Volvo S40 owners report experiencing issues related to water accumulation in the back seats, which can lead to starting problems. This accumulation may be caused by external factors such as leaking sunroofs, doors, or windows, as well as internal issues like air conditioner leaks or heater core malfunctions. Additionally, a clogged sunroof drain can contribute to water pooling on the floor. The presence of moisture can potentially affect electrical components related to the starting system, leading to corrosion of wiring and interference with proper vehicle operation. Owners are advised to promptly address these water issues by checking for clogged drain tubes and other sources of leaks to prevent further damage. Regular maintenance of drainage systems and seals is also recommended to mitigate these risks. If starting problems persist, it is advisable to seek inspection from a qualified mechanic to diagnose and resolve any underlying causes.