Toyota Sienna Battery Location
Find exactly where the battery is in your Toyota Sienna. Includes battery size, type, and replacement tips for all generations.
Last updated: 2026-11-08 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
The Toyota Sienna battery is under the hood on the driver's side (left) for all generations.
| Generation | Years | Top spec |
|---|---|---|
| 4th Gen (2021-2024) | 2021-2024 | Under hood, driver's side |
| 3rd Gen (2011-2020) | 2011-2020 | Under hood, driver's side |
| 2nd Gen (2004-2010) | 2004-2010 | Under hood, driver's side |
This vehicle's factory manual
Toyota Sienna: choose your year, then confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Toyota Sienna maintenance schedule
Check battery location information for your Toyota Sienna
The Toyota Sienna battery is under the hood on the driver's side (left) for all generations.
Battery access can move between the engine bay, cargo floor, cowl, or under-seat trays depending on hybrid hardware and trim. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Find Your Vehicle
Choose your year, model and configuration before using a specification or ordering parts. The example source may describe a different vehicle or trim.
4th Gen (2021-2024)
- →Sienna Hybrid has a 12V auxiliary battery under the hood and high-voltage battery under the rear seat
3rd Gen (2011-2020)
2nd Gen (2004-2010)
1st Gen (1998-2003)
Parts and supplies
These links search for related products. Check your year, engine, specification, and fitment with the seller before ordering.
Toyota Sienna Replacement Battery
Confirm the specification and fitment for your exact vehicle before ordering.
We earn a small commission if you buy through these links — at zero extra cost to you. These are search results, not verified vehicle-specific recommendations.
Battery — Manual's Parts List
The right battery, the right tools, no lost settings.
- 1Replacement BatteryShop →
Under hood, driver's side — AGM strongly recommended for modern cars
- 2OBD2 Memory SaverShop →
Keeps radio presets, seat memory, idle learn data
- 3Terminal Cleaner BrushShop →
Corrosion under the clamp causes voltage drop
- 4Battery Terminal Protector SprayShop →
Prevents the green crust from coming back
Get everything at once
Search results vary; confirm each item and its fitment before buying.
Links go to Amazon via our affiliate store (aiautorepair-20). We earn a small commission at no extra cost to you — it keeps the site running and the data free.
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Replacement Battery
Match your Group Size (e.g. H6, 35) and CCA rating.
Terminal Cleaner
Removes corrosion for a reliable electrical connection.
Memory Saver
Keeps your car settings while the battery is disconnected.
Battery Carrier
Makes lifting heavy batteries much safer and easier.
Battery Charger
Helpful for revive-and-test jobs before you replace a weak battery.
Terminal Spray
Protects battery posts from future corrosion.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Toyota Sienna so the job is ready when the parts arrive.
Frequently Asked Questions
- Where is the battery in a Toyota Sienna?
- All Toyota Sienna generations place the 12V battery under the hood on the driver's side (left). It sits in a tray near the firewall, held by a clamp bar.
- What size battery does a Toyota Sienna need?
- Most 2004+ Siennas use a Group 35 battery. Early 1998-2003 models may use Group 24F. Verify by checking the old battery label or owner manual.
- What battery location does a Toyota Sienna use?
- The Toyota Sienna battery is under the hood on the driver's side (left) for all generations.
- What battery size for a Toyota Sienna?
- The Toyota Sienna battery is under the hood on the driver's side (left) for all generations.
Find your service manual
Select your vehicle and check the available manual sections for your exact configuration.
Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-11-08