What battery does a 2019 4Runner use?
This owner's manual does not print a group size. It prints open-circuit voltage at 68 F and a 5 amp maximum charge.
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In-depth guide
2019 Toyota 4Runner
2019 4Runner battery checks are the case, the terminals, and an open-circuit voltage. Charge at 5 amps or less. No group size is printed.
| Item | Figure |
|---|---|
| Open voltage at 68 F (20 C) | 12.6 to 12.8 V fully charged. 12.2 to 12.4 V half charged. 11.8 to 12.0 V discharged. Measure 20 minutes after the engine and all lights are off. |
| Charge rate | 5 A maximum. Only a slow charge. Disconnect the ground cable if the battery is charged in the vehicle. |
| Exterior | Terminals not corroded, connections tight, no cracks, clamps tight. The parts list names warm water, baking soda, grease, and a conventional wrench for the terminal clamp bolts. |
| Group size | Not printed. |
| Key fob | CR2016 without a smart key. CR1632 with a smart key. Positive terminal up. Not the vehicle battery. |
Source: owner's manual / last verified 2026-10-16 (2019 4Runner Owner's Manual, publication OM35B48U. The PDF file was created July 3, 2018. Battery. (opens in a new tab)).
Difficulty, time, and cost are estimates when this guide gives them. Torque is a cited figure, or it is left off.
Main source: 2019 4Runner Owner's Manual, publication OM35B48U. The PDF file was created July 3, 2018. Battery. (opens in a new tab), Toyota Motor Sales, U.S.A., Inc., published 2018-07-03, read 2026-10-16.
Conventional wrench
The battery parts list names a conventional wrench for the terminal clamp bolts.
Clean rag
The key-battery steps say to cover a screwdriver tip with a rag. That rag is for the key, not a terminal cleaner.
Flathead screwdriver
The key-fob battery procedure uses a flathead screwdriver with the tip covered. It is not the tool for the under-hood battery.
| Item | Figure | Where it comes from |
|---|---|---|
| Open voltage at 68 F (20 C) | 12.6 to 12.8 V fully charged. 12.2 to 12.4 V half charged. 11.8 to 12.0 V discharged. Measure 20 minutes after the engine and all lights are off. | Electrical system |
| Charge rate | 5 A maximum. Only a slow charge. Disconnect the ground cable if the battery is charged in the vehicle. | Battery precautions |
| Exterior | Terminals not corroded, connections tight, no cracks, clamps tight. The parts list names warm water, baking soda, grease, and a conventional wrench for the terminal clamp bolts. | Battery exterior and the parts list |
| Group size | Not printed. | Electrical system, as read |
| Key fob | CR2016 without a smart key. CR1632 with a smart key. Positive terminal up. Not the vehicle battery. | Wireless remote control battery |
No corrosion, no loose connections, no cracks, clamps tight. The parts list names warm water, baking soda, grease, and a conventional wrench for the clamp bolts.
68 F, 20 minutes after the engine and all lights are off. 12.6 to 12.8 V is full. 12.2 to 12.4 V is half. 11.8 to 12.0 V is discharged.
5 A or less, ground cable off if the battery stays in the truck, charger power off while the clamps are moved. After reconnecting a smart-key truck, shift to P, open and close a door, and restart. The key fob is a separate CR2016 or CR1632.
The maintenance-message reset is an oil-service step, not a battery replacement. It is on the engine oil guide.
No battery-location diagram is redrawn. The engine-compartment illustration in the manual labels the battery.
Outbound links only. BaySheet does not sell parts. Confirm fitment on the retailer page. Amazon links are searches for a real part name plus this vehicle. Tool rows do not get a product search. The search is not a part number.
Part
12-volt vehicle battery
No group size or Toyota part number is printed. The open-voltage table is the test in this book.
2019 4Runner battery specification (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
CR2016 battery
Key fob on trucks without a smart key. Positive side up.
2019 4Runner key battery (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
CR1632 battery
Electronic key on trucks with a smart key. Positive side up.
2019 4Runner smart key battery (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Tool
Conventional wrench
The battery parts list names a conventional wrench for the terminal clamp bolts.
Tool
Clean rag
The key-battery steps say to cover a screwdriver tip with a rag. That rag is for the key, not a terminal cleaner.
Tool
Flathead screwdriver
The key-fob battery procedure uses a flathead screwdriver with the tip covered. It is not the tool for the under-hood battery.
This owner's manual does not print a group size. It prints open-circuit voltage at 68 F and a 5 amp maximum charge.
12.6 to 12.8 volts, measured 20 minutes after the engine and the lights are off, at 68 F.
CR2016 without a smart key, or CR1632 with a smart key. The positive terminal faces up.
The maintenance checklist is on the site now. The email list is not sending yet, so this box will not store an address.
These guides cover the same kind of work. Their numbers belong to those vehicles, not to this one.
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