2020 Lexus ES Electrical System

• Frequent Battery Replacements: My vehicle is now on its third battery within a five-year lifespan. The previous owner replaced the battery two years ago when the vehicle was only two years old, and I recently had to replace it again. • Unacceptable Battery Lifespan: No vehicle should require a new battery every two years under normal conditions. This strongly suggests an underlying defect in the battery, charging system, or electrical components. • Lack of Manufacturer Remedy: Despite dozens, if not hundreds, of complaints from other 2020 Lexus ES 350 owners online describing the exact same issue, Lexus has not issued a recall or service bulletin to investigate or resolve the problem. • Misleading Battery Warranty: Lexus advertises its 84-month battery warranty, but this is misleading. In reality, it only provides a full replacement for the first 24 months, while the remaining coverage period is prorated, meaning owners are still required to pay a portion of the cost after just two years. This is deceptive marketing that fails to reflect the true coverage provided. • Potential Safety Hazard: Frequent battery failures could leave drivers stranded unexpectedly, which poses a serious safety risk in various situations (e.g., extreme weather, remote locations, or high-traffic areas). • Lexus’ Partial Acknowledgment of the Issue: This battery issue appears to be somewhat acknowledged by Lexus because they replaced the original battery with a much larger Cold Cranking Amps (CCA) version than what comes standard in the ES 350. The factory-installed battery is rated at 640 CCA, but the replacement Lexus provides is 770 CCA. After researching, I found that this larger battery is typically used in the Lexus LS model, which is a much larger, more powerful vehicle requiring a bigger battery. Despite this upgrade, the replacement battery still fails within two years, indicating that there is an underlying issue causing premature battery failure beyond just battery capacity.