WARNING: This page is about a different car, the 2025 Toyota GR Corolla, 2024 Toyota GR Corolla, and 2023 Toyota GR Corolla. However, it is still accessible from the selected car via links, so may be relevant.
INSPECT OIL COOLER ASSEMBLY
Visually check the oil cooler assembly for cracks or damage.
If cracks or damage are found, replace the oil cooler assembly.