This is one of the easiest jobs on the E170 Corolla. The battery sits right at the front left of the engine bay with nothing covering it, and every fastener you touch is 10 mm: the two terminal clamp nuts and the two nuts on the hold-down J-hook rods. The only mild annoyance is that the hold-down nuts are down beside the battery case, so a 10 mm deep socket on a 6 inch extension makes it painless where a plain socket will not reach.
Unlike many European cars, there is no battery registration or coding on this generation - any correct-size battery works, including AGM. What people get wrong is the hold-down: it either gets left loose or overtightened, and it gets skipped entirely when the rods fall into the bay. Also confirm the group size and post orientation before you buy; most US cars take Group 35 but some builds use 24F, and a battery with the posts reversed will leave the cables too short.
| Item | Type | |
|---|---|---|
| Safety glasses Battery acid and sparks at the terminals. | Safety | shop |
| Nitrile gloves Keeps acid residue and corrosion off your hands. | Safety | shop |
| Memory saver OBD-II port or 12V socket type Keeps radio presets, clock and learned settings alive while the battery is out. | Recommended | shop |
| Socket wrench 3/8 in drive ratchet Drives the terminal and hold-down sockets. | Required | shop |
| Socket 10 mm, 3/8 in drive Loosens both battery terminal clamp nuts. | Required | shop |
| Deep socket 10 mm deep, 3/8 in drive Reaches the two nuts on the hold-down J-hook rods. | Required | shop |
| Extension 6 in, 3/8 in drive Gets the deep socket down to the hold-down nuts beside the battery. | Required | shop |
| Combination wrench 10 mm Useful on the negative terminal in tight clearance near the fender. | Recommended | shop |
| Battery terminal puller Small two-jaw Frees a terminal clamp stuck on the post without prying on the post. | Recommended | shop |
| Battery terminal brush Post and clamp wire brush Cleans corrosion from posts and clamp interiors for a good connection. | Recommended | shop |
| Battery carry strap The Group 35 battery is around 35-40 lb and has no handle. | Recommended | shop |
| Battery terminal protector Spray or felt washers Prevents new corrosion on the posts. | Consumables | shop |
| Baking soda and water Neutralizes acid and corrosion in the battery tray. | Consumables | shop |
| Replacement battery Group 35, 550+ CCA (Group 24F fits some builds) The replacement itself; check the tray and hold-down fit. | Parts | shop |
| Torque wrench 1/4 in drive, in-lb range Terminal and hold-down fasteners are low torque and easy to strip. | Recommended | shop |
All 2014-2019 E170 Corollas use the 1.8 L 2ZR-FE or 2ZR-FAE, so the battery location and the 10 mm fastener sizes are identical across L, LE, LE Eco, S and XSE trims. Only the battery group size can differ between builds (Group 35 on most, 24F on some), so match what is already in the car.
| Battery terminal clamp nuts | 48 in-lb (5.4 Nm) |
| Battery hold-down clamp nuts | verify in the service manual (snug only, roughly 35-60 in-lb) |
The 10 mm terminal nuts and 10 mm hold-down nuts are correct for all 2014-2019 E170 Corollas with the 1.8; double-check your existing battery's group size (most US cars are Group 35) and terminal orientation before buying, and verify the hold-down torque in the FSM.
Most US-market E170 Corollas use a BCI Group 35 battery with roughly 550-640 CCA; some builds take a Group 24F. Pull the label off your old battery or measure the case before buying, since the tray and hold-down only fit one size well.
No. There is no battery registration on this generation. You will only need to reset the clock and radio presets, and possibly re-initialize the power window auto up/down feature by holding the switch fully down then fully up for two seconds each.
10 mm for both terminal clamp nuts and 10 mm for the two hold-down clamp nuts. A 10 mm deep socket with a 6 inch extension on a 3/8 inch ratchet reaches the hold-down nuts easily.
Yes, an AGM in the correct group size works fine and needs no special setup, since the Corolla's charging system is a conventional alternator with no absorbed-glass-mat-specific charging profile. It just costs more and generally lasts longer than a flooded battery.