The typical price for replacing the 12-volt starting battery on a 2015 Lexus RX 350 ranges from about $120 to $350, depending on the battery type, brand, and where you buy it. Labor and installation charges, if you opt for professional help, can add roughly $50 to $100.
What kind of battery does the RX 350 use?
The RX 350 uses a standard 12-volt lead-acid battery for starting and electrical systems. Many owners stick with a conventional flooded battery, but an AGM (absorbed glass mat) option is popular for longer life and better performance in extreme temperatures. The exact size and terminal configuration are specified by Toyota/Lexus and can be confirmed by checking the vehicle’s manual or a parts retailer using your VIN.
Price ranges by battery type
Prices vary by battery type and brand. Here is a typical breakdown to help you estimate costs.
- Flooded lead-acid battery (standard): about $100–$180
- AGM battery (premium, longer life): about $180–$290
- OEM/Lexus-branded or high-end batteries: about $200–$350
- Labor/installation (if not included): about $50–$100
In practice, you’ll likely pay toward the middle of these ranges, depending on whether you choose OEM parts, an aftermarket option, or an AGM upgrade, as well as whether installation is included in the purchase.
Where to buy and what to consider
Where you shop affects price, warranties, and convenience. Retailers and services differ in what they include with a battery purchase, such as installation, recycling, and exchange cores.
OEM vs aftermarket options
OEM (Toyota/Lexus-branded) batteries tend to cost more upfront but may come with longer warranties and guaranteed compatibility. Aftermarket batteries can offer substantial savings with comparable performance and warranty terms. Always verify compatibility with your RX 350’s model year and trim.
Installation and warranty considerations
Consider whether installation is included or available as an add-on, and review the warranty period (commonly 2–4 years for standard batteries, longer for AGM). A store with quick testing and a free battery voltage check can be helpful to confirm you’re replacing the right unit.
Shopping tips
To get an accurate price, use your vehicle’s VIN when shopping online or call your local stores. Compare at least two options (standard flooded vs AGM), check for core exchange policies, and factor in any free services offered by the retailer such as free disposal of the old battery or free battery testing.
Summary
Replacing the 12-volt battery on a 2015 Lexus RX 350 typically costs between $120 and $350, with installation adding roughly $50 to $100. Your final price will depend on battery type (flooded vs AGM), brand (aftermarket vs OEM), and where you buy it. For the most accurate quote, identify the exact battery group size and consult local automotive parts retailers or a Lexus service center using your VIN.
How long does a battery last on a Lexus RX 350?
between 3-5 years
Lexus RX 350 batteries usually last between 3-5 years, but this is variable depending on weather conditions, driving habits, the type of battery, and more. You can prolong the life of your RX 350 battery by: Cleaning the terminals and posts of corrosion with the appropriate cleaning solution & a wire brush.
How much does it cost to replace a Lexus RX 350 battery?
between $704 and $721
The average cost for a Lexus RX350 Battery Replacement is between $704 and $721 but can vary from car to car.
What kind of battery is used in a Lexus RX 350?
Most Lexus RX 350 models use a Group Size 24F battery, though exact requirements may vary slightly depending on the year and trim. Use our fitment tool to find the right match for your specific vehicle. How long does a Lexus RX 350 battery typically last? A typical RX 350 battery lasts 3 to 5 years.
How much is a battery for a 2015 Lexus RX 350?
The average cost for a 2015 Lexus RX350 Battery Replacement is between $732 and $749. Labor costs are estimated between $37 and $54 while parts are typically priced around $695.