Lexus ES300h starting issue with unresolved battery problem after five days at service center on Lexus ES300h

Some Lexus ES300h owners report experiencing persistent starting issues, even after extended service center visits. Common problems include battery failures, where the 12V battery may be dead or not supplying sufficient power, necessitating a charge or replacement. Additionally, owners often encounter issues related to a faulty alternator or starter, which can stem from blown fuses or defective battery cells. If starting difficulties continue after a five-day inspection at the service center, it is advisable to request a comprehensive evaluation of the battery, alternator, and starter systems. Symptoms of a hybrid system malfunction, such as poor acceleration and decreased fuel economy, may also indicate underlying issues that require attention from a qualified technician. If problems persist despite addressing the battery, further exploration into alternator or starter motor issues, as well as electrical connections, is recommended. Consulting a certified Lexus service center or a mechanic with hybrid vehicle expertise can be crucial for effectively diagnosing and resolving these ongoing starting problems.