About the Lexus GS 300h
The Lexus GS 300h was first introduced as a 2014 model and ended production in 2020.
| Power (combined hybrid output) | 217 hp 162 kW 220 PS |
| Power (gasoline engine only) | 176 hp 131 kW 178 PS |
| Transmission | CVT automatic |
| MPG | 50 mpg US 4.7 L/100 km |
| 0 to 62 mph | 9.2 seconds |
| Top Speed | 119 mph |
Lexus GS 300h Batteries
Drive Battery | 12V Battery | Key Fob Battery
Drive Battery / Traction Battery
In EV mode the GS 300h can reach 46mph. The batteries tend to run out of juice after about half a mile, but by then you will be up to cruising speed for the gasoline engine to efficiently take over power delivery.
Drive Battery Specs
The Lexus GS 300h uses a nickel-metal hydride (NiMH) drive battery.
Drive Battery FAQs
Where do I purchase a Lexus GS 300h replacement battery?
Lexus – The manufacturer of the car is the best place to source replacement drive batteries.
Find a Lexus Dealer in Your Area
How do I upgrade my Lexus GS 300h battery?
Battery technology is improving every year and has likely carried forward quite a bit since your car was built. Prismatic batteries are one way that NiMH batteries in particular have improved. Get more range, more power, and a longer lifespan.
The aftermarket battery manufacturer, EnnoCar, carries an upgraded Ni-MH 230.4V 6.5Ah Prismatic Battery for the Lexus GS 300h, model years 2013-2017.
EnnoCar: Lexus GS 300h Replacement Battery
How long will a Lexus 300h battery last?
Lexus ES 300h batteries typically last between 3-5 years, but this is variable depending on driving habits, battery condition, and weather conditions.
12V Battery
Lexus GS 300h 12V Battery Size / Group / Part Number
The OEM Manufacturer Part Number for the Lexus GS 300h 12V low-voltage battery is 28800-36080.
Find a Geniuine Lexus IS 300h 12V Battery on eBay
The GS300h uses a Group 35 12V battery to power its auxiliary systems such as ECU, dash, headlights and other low-voltage systems.
Find Group 35 Batteries on Amazon
Lexus GS 300h 12V Battery Terminal Maintenance
Maintaining the batteries terminals in the GS 300h is essential to ensuring a positive contact between terminals and posts. We recommend cleaning terminals and using a terminal protectant spray to prevent corrosion on your battery terminals.
CRC Battery Cleaner w/ Acid Detector will clean your battery terminals and surface, neutralizing acids and detecting leaks.
CRC Battery Terminal Protector Spray is designed to protect battery terminals from corrosion, a leading cause of hard starting and battery failure.
Lexus GS 300h 12V Battery Testing and Repair
Battery testers are an inexpensive way to save yourself time in repairing your Lexus ES 300h. A healthy 12V battery will read between 12.6 and 12.8 volts when tested. Anything lower, and you may want to consider replacing your batteries or checking the battery fluid levels.
Jump starting a Lexus GS 300h Hybrid
If your Lexus GS 300h 12V battery has died, you can still access the vehicle as long as you have the key fob. Check out the following video to learn to jump start a Lexus GS 300h Hybrid:
14 Gauge Jumper Wires are an excellent solution for modern hybrids, including the Lexus GS 300h, as this vehicle does not require the bulky jumper wires that have been used in older vehicles.
Shop 14 Gauge Jumper Wires on Amazon
A battery jump box can also be a life-saver! If you do not have another vehicle to jump your car from, you’ll want a jump box. Here are a few that come highly recommended:
| ZunDian Battery Jump Starter with Air Compressor Car Tire Inflator, Portable Power Station 110V, 1600 Amp, 400W Power Inverter USB DC AC Outlet | Amazon | $$$ |
| NOCO Boost Plus GB40 1000 Amp 12-Volt UltraSafe Lithium Jump Starter Box | Amazon | $$ |
| BUTURE Car Battery Jump Starter 2500A Jump Box (8.5L Gas/8.0L Diesel) | Amazon | $ |
Key Fob Battery
The Lexus GS300h key fob uses a CR1632 3V lithium battery.
Find CR1632 3V Lithium Batteries on Amazon
Lexus GS300h Drivetrain
Electric Motor
The GS 300h features two permanent magnet synchronous electric motors which add a combined 141 bhp to the drivetrain power equation.
Gasoline Engine
The gas engine in the Lexus GS 300h is a 2.5-liter inline-four Atkinson cycle engine with D-4S direct injection technology, which was derived in the third generation IS.
FAQs
What type and grade of gasoline does the Lexus GS 300h use?
The Lexus GS300h uses regular unleaded gasoline.
Transmission
The GS 300h features an automatic electronically controlled continuously variable transmission (e-CVT).
It attempts to maximize efficiency by keeping the engine at optimum RPM for any particular moment on your drive.
Join a Lexus GS300h Community
ClubLexus.com: GS Hybrid Technology – A sub-forum dedicated to the GS’s hybrid technology on one of the most popular Lexus forums on the internet.
LexusOwnersClub.co.uk: Lexus GS – All things Lexus GS 300 / Lexus GS 250 / Lexus GS 430 / Lexus 450h / Lexus GS 460 Club, specifically in the UK, but open to all.
Reddit.com/r/Lexus – A subreddit just for Lexus owners and enthusiasts.